ZSI_Reconnect_China/PATSTAT/CPC_data/CPCSchemeXML202302/cpc-scheme-C02F.xml

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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="C02F" definition-exists="true" date-revised="2023-01-01" status="published"><classification-symbol>C02F</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE </text><reference><text>separation in general <class-ref scheme="cpc">B01D</class-ref>; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, <class-ref scheme="cpc">B63J</class-ref>; adding materials to water to prevent corrosion <class-ref scheme="cpc">C23F</class-ref>; treating radioactively-contaminated liquids <class-ref scheme="cpc">G21F9/04</class-ref>; regeneration of reactants for recirculation into processes, see the relevant places for the processes</text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> When classifying in this subclass, classification is also made in group <class-ref scheme="cpc">B01D15/08</class-ref> insofar as subject matter of general interest relating to chromatography is concerned. </note-paragraph></note><note type="warning"><note-paragraph><CPC-specific-note>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</CPC-specific-note></note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="C02F1/00" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C02F1/00" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C02F1/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Treatment of water, waste water, or sewage </text><reference><text><class-ref scheme="cpc">C02F3/00</class-ref>&#160;-&#160;<class-ref scheme="cpc">C02F9/00</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/001" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C02F1/001</classification-symbol><class-title date-revised="2016-05-01"><title-part><CPC-specific-text><text>Processes for the treatment of water whereby the filtration technique is of importance </text><reference><text><class-ref scheme="cpc">C02F1/44</class-ref> takes precedence; construction of filters in general <class-ref scheme="cpc">B01D24/00</class-ref>&#160;-&#160;<class-ref scheme="cpc">B01D41/00</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/002" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear </text><reference><text><class-ref scheme="cpc">C02F1/003</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/003" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2023-01-01" status="published"><classification-symbol>C02F1/003</classification-symbol><class-title date-revised="2023-01-01"><title-part><CPC-specific-text><text>using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices </text><reference><text><class-ref scheme="cpc">C02F9/20</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/004" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using large scale industrial sized filters</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/005" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Systems or processes based on supernatural or anthroposophic principles, cosmic or terrestrial radiation, geomancy or rhabdomancy</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/006" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks </text><reference><text>for settling tanks <class-ref scheme="cpc">B01D21/24</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F1/007" definition-exists="false" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Processes including a sedimentation step</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/008" definition-exists="true" ipc-concordant="C02F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Control or steering systems not provided for elsewhere in subclass <class-ref scheme="cpc">C02F</class-ref></text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/02" definition-exists="true" ipc-concordant="C02F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by heating </text><reference><text>methods of steam generation <class-ref scheme="cpc">F22B</class-ref>; preheating boiler feed-water or accumulating preheated boiler feed-water <class-ref scheme="cpc">F22D</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/025" definition-exists="false" ipc-concordant="C02F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Thermal hydrolysis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/04" definition-exists="true" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by distillation or evaporation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/041" definition-exists="true" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/041</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by means of vapour compression</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/042" definition-exists="true" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Prevention of deposits</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/043" definition-exists="false" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/045" definition-exists="true" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for obtaining ultra-pure water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/046" definition-exists="true" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>under vacuum produced by a barometric column</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/047" definition-exists="false" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using eolic energy</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/048" definition-exists="true" ipc-concordant="C02F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/048</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Purification of waste water by evaporation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/06" definition-exists="true" ipc-concordant="C02F1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Flash evaporation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/08" definition-exists="true" ipc-concordant="C02F1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thin film evaporation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/10" definition-exists="true" ipc-concordant="C02F1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by direct contact with a particulate solid or with a fluid, as a heat transfer medium</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/12" definition-exists="true" ipc-concordant="C02F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Spray evaporation</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/14" definition-exists="true" ipc-concordant="C02F1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using solar energy</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/16" definition-exists="true" ipc-concordant="C02F1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using waste heat from other processes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/18" definition-exists="true" ipc-concordant="C02F1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Transportable devices to obtain potable water</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/20" definition-exists="true" ipc-concordant="C02F1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by degassing, i.e. liberation of dissolved gases </text><reference><text>degasification of liquids in general <class-ref scheme="cpc">B01D19/00</class-ref>; arrangement of degassing apparatus in boiler feed supply <class-ref scheme="cpc">F22D</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/22" definition-exists="true" ipc-concordant="C02F1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by freezing</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/24" definition-exists="true" ipc-concordant="C02F1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by flotation </text><reference><text><class-ref scheme="cpc">C02F1/465</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/26" definition-exists="true" ipc-concordant="C02F1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by extraction</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/265" definition-exists="false" ipc-concordant="C02F1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Desalination</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/28" definition-exists="true" ipc-concordant="C02F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by sorption </text><reference><text>using ion-exchange <class-ref scheme="cpc">C02F1/42</class-ref>; sorbent compositions <class-ref scheme="cpc">B01J</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/281" definition-exists="true" ipc-concordant="C02F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/281</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using inorganic sorbents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/283" definition-exists="true" ipc-concordant="C02F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/283</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using coal, charred products, or inorganic mixtures containing them</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/285" definition-exists="true" ipc-concordant="C02F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using synthetic organic sorbents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/286" definition-exists="true" ipc-concordant="C02F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/286</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using natural organic sorbents or derivatives thereof</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/288" definition-exists="true" ipc-concordant="C02F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/288</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using composite sorbents, e.g. coated, impregnated, multi-layered</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/30" definition-exists="true" ipc-concordant="C02F1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by irradiation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/302" definition-exists="true" ipc-concordant="C02F1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/302</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with microwaves</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/305" definition-exists="false" ipc-concordant="C02F1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with electrons</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/307" definition-exists="false" ipc-concordant="C02F1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-07-01" status="published"><classification-symbol>C02F1/307</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with X-rays or gamma radiation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/32" definition-exists="true" ipc-concordant="C02F1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with ultra-violet light</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/325" definition-exists="true" ipc-concordant="C02F1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/325</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Irradiation devices or lamp constructions</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/34" definition-exists="true" ipc-concordant="C02F1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with mechanical oscillations</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/36" definition-exists="true" ipc-concordant="C02F1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ultrasonic vibrations</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/38" definition-exists="true" ipc-concordant="C02F1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by centrifugal separation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/385" definition-exists="true" ipc-concordant="C02F1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/385</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by centrifuging suspensions </text><reference><text>centrifuges <class-ref scheme="cpc">B04B</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/40" definition-exists="true" ipc-concordant="C02F1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices for separating or removing fatty or oily substances or similar floating material </text><reference><text>cleaning or keeping clear the surface of open water from oil or like materials <class-ref scheme="cpc">E02B15/04</class-ref>; devices in sewers for separating liquid or solid substances from sewage <class-ref scheme="cpc">E03F5/14</class-ref>, e.g. for use in drains leading to the sewer <class-ref scheme="cpc">E03F5/16</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/42" definition-exists="true" ipc-concordant="C02F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C02F1/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by ion-exchange </text><reference><text>ion-exchange in general <class-ref scheme="cpc">B01J</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> When classifying in group <class-ref scheme="cpc">C02F1/42</class-ref>, details of ion-exchangers can be further indexed by using indexing codes chosen from <class-ref scheme="cpc">C02F2001/422</class-ref>&#160;-&#160;<class-ref scheme="cpc">C02F2001/427</class-ref></note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F1/422" definition-exists="false" ipc-concordant="C02F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/422</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anionic exchangers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F1/425" definition-exists="false" ipc-concordant="C02F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/425</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using cation exchangers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F1/427" definition-exists="false" ipc-concordant="C02F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/427</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using mixed beds</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/44" definition-exists="true" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by dialysis, osmosis or reverse osmosis </text><CPC-specific-text><reference><text>general membrane separation processes <class-ref scheme="cpc">B01D61/00</class-ref>, membrane modules <class-ref scheme="cpc">B01D63/00</class-ref>, electrodialysis <class-ref scheme="cpc">C02F1/4693</class-ref>, combination of membrane modules and bioreactors <class-ref scheme="cpc">C02F3/1268</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/441" definition-exists="true" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/441</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by reverse osmosis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/442" definition-exists="true" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/442</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by nanofiltration</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/444" definition-exists="true" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/444</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by ultrafiltration or microfiltration</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/445" definition-exists="false" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by forward osmosis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/447" definition-exists="false" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/447</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by membrane distillation </text><reference><text>distillation and evaporation without the use of membranes <class-ref scheme="cpc">C02F1/04</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/448" definition-exists="false" ipc-concordant="C02F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by pervaporation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/46" definition-exists="true" ipc-concordant="C02F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrochemical methods</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/4602" definition-exists="false" ipc-concordant="C02F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4602</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for prevention or elimination of deposits</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/4604" definition-exists="true" ipc-concordant="C02F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4604</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for desalination of seawater or brackish water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/4606" definition-exists="true" ipc-concordant="C02F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C02F1/4606</classification-symbol><class-title date-revised="2017-02-01"><title-part><CPC-specific-text><text>for producing oligodynamic substances to disinfect the water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/4608" definition-exists="true" ipc-concordant="C02F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4608</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using electrical discharges</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/461" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/461</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrolysis</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/46104" definition-exists="true" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/46104</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices therefor; Their operating or servicing</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/46109" definition-exists="true" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>C02F1/46109</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Electrodes</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> When classifying in group <class-ref scheme="cpc">C02F1/46109</class-ref>, details of devices for electrolysis can be further indexed by using indexing codes chosen from <class-ref scheme="cpc">C02F2001/46119</class-ref>&#160;-&#160;<class-ref scheme="cpc">C02F2001/46166</class-ref> </note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F1/46114" definition-exists="true" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C02F1/46114</classification-symbol><class-title date-revised="2017-02-01"><title-part><CPC-specific-text><text>Electrodes in particulate form or with conductive and/or non conductive particles between them</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46119" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46119</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cleaning the electrodes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46123" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Movable electrodes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46128" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bipolar electrodes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46133" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46133</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the material</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="13" additional-only="true" sort-key="C02F1/46138" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46138</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Electrodes comprising a substrate and a coating</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="14" additional-only="true" sort-key="C02F1/46142" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46142</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Catalytic coating</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="14" additional-only="true" sort-key="C02F1/46147" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46147</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Diamond coating</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46152" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46152</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the shape or form </text><reference><text>electrodes in particulate form or with conductive or non-conductive particles between them <class-ref scheme="cpc">C02F1/46114</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="13" additional-only="true" sort-key="C02F1/46157" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46157</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Perforated or foraminous electrodes</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="14" additional-only="true" sort-key="C02F1/46161" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46161</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Porous electrodes</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="15" additional-only="true" sort-key="C02F1/46166" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46166</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Gas diffusion electrodes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="13" additional-only="true" sort-key="C02F1/46171" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46171</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylindrical or tubular shaped</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/46176" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/46176</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Galvanic cells</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/4618" definition-exists="true" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C02F1/4618</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for producing &quot;ionised&quot; acidic or basic water</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph> When classifying in group <class-ref scheme="cpc">C02F1/4618</class-ref>, details relating to the production of &quot;ionised&quot; acidic or basic water using electrolysis devices can be further indexed by using indexing codes chosen from <class-ref scheme="cpc">C02F2001/46185</class-ref>&#160;-&#160;<class-ref scheme="cpc">C02F2001/46195</class-ref></note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46185" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>only anodic or acidic water, e.g. for oxidizing or sterilizing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/4619" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/4619</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>only cathodic or alkaline water, e.g. for reducing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F1/46195" definition-exists="false" ipc-concordant="C02F1/461" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/46195</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the oxidation reduction potential [ORP]</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/463" definition-exists="true" ipc-concordant="C02F1/463" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/463</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrocoagulation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/465" definition-exists="true" ipc-concordant="C02F1/465" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/465</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electroflotation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/467" definition-exists="false" ipc-concordant="C02F1/467" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>C02F1/467</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>by electrochemical disinfection</text></title-part><title-part><CPC-specific-text><text>by electrooxydation or by electroreduction</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/4672" definition-exists="true" ipc-concordant="C02F1/467" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4672</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by electrooxydation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F1/4674" definition-exists="false" ipc-concordant="C02F1/467" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4674</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with halogen or compound of halogens, e.g. chlorine, bromine</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/4676" definition-exists="true" ipc-concordant="C02F1/467" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4676</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by electroreduction</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F1/4678" definition-exists="true" ipc-concordant="C02F1/467" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4678</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of metals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/469" definition-exists="true" ipc-concordant="C02F1/469" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/469</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/4691" definition-exists="true" ipc-concordant="C02F1/469" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4691</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Capacitive deionisation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/4693" definition-exists="true" ipc-concordant="C02F1/469" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4693</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>electrodialysis</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/4695" definition-exists="true" ipc-concordant="C02F1/469" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4695</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>electrodeionisation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/4696" definition-exists="false" ipc-concordant="C02F1/469" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4696</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>electrophoresis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/4698" definition-exists="true" ipc-concordant="C02F1/469" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/4698</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>electro-osmosis</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/48" definition-exists="true" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with magnetic or electric fields </text><reference><text><class-ref scheme="cpc">C02F1/46</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/481" definition-exists="true" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/481</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using permanent magnets</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/482" definition-exists="false" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/482</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/484" definition-exists="true" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-07-01" status="published"><classification-symbol>C02F1/484</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using electromagnets</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/485" definition-exists="false" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-07-01" status="published"><classification-symbol>C02F1/485</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/487" definition-exists="true" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-07-01" status="published"><classification-symbol>C02F1/487</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using high frequency electromagnetic fields, e.g. pulsed electromagnetic fields</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/488" definition-exists="true" ipc-concordant="C02F1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/488</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for separation of magnetic materials, e.g. magnetic flocculation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/50" definition-exists="true" ipc-concordant="C02F1/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by addition or application of a germicide or by oligodynamic treatment </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/4606</class-ref>, <class-ref scheme="cpc">C02F1/467</class-ref>, <class-ref scheme="cpc">C02F1/76</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/505" definition-exists="true" ipc-concordant="C02F1/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/505</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by oligodynamic treatment</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/52" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by flocculation or precipitation of suspended impurities </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/463</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/5209" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5209</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Regulation methods for flocculation or precipitation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F1/5218" definition-exists="false" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2001/5218</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Crystallization</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/5227" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5227</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Processes for facilitating the dissolution of solid flocculants in water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/5236" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5236</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using inorganic agents</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/5245" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using basic salts, e.g. of aluminium and iron</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/5254" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5254</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using magnesium compounds and phosphoric acid for removing ammonia</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/5263" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5263</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using natural chemical compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/5272" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5272</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using specific organic precipitants</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/5281" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/5281</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Installations for water purification using chemical agents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/529" definition-exists="true" ipc-concordant="C02F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/529</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Processes or devices for preparing lime water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/54" definition-exists="true" ipc-concordant="C02F1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using organic material</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/542" definition-exists="true" ipc-concordant="C02F1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/542</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phosphorus compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/545" definition-exists="true" ipc-concordant="C02F1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/545</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Silicon compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/547" definition-exists="true" ipc-concordant="C02F1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/547</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tensides</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/56" definition-exists="true" ipc-concordant="C02F1/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Macromolecular compounds</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/58" definition-exists="true" ipc-concordant="C02F1/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by removing specified dissolved compounds </text><reference><text>using ion-exchange <class-ref scheme="cpc">C02F1/42</class-ref>; softening water <class-ref scheme="cpc">C02F5/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/583" definition-exists="false" ipc-concordant="C02F1/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/583</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by removing fluoride or fluorine compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/586" definition-exists="false" ipc-concordant="C02F1/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/586</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by removing ammoniacal nitrogen </text><reference><text>for biological methods <class-ref scheme="cpc">C02F3/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/60" definition-exists="false" ipc-concordant="C02F1/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Silicon compounds </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/583</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/62" definition-exists="false" ipc-concordant="C02F1/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heavy metal compounds</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/64" definition-exists="false" ipc-concordant="C02F1/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/64</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of iron or manganese</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F1/645" definition-exists="false" ipc-concordant="C02F1/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/645</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices for iron precipitation and treatment by air</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/66" definition-exists="true" ipc-concordant="C02F1/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/66</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by neutralisation</text></title-part><title-part><text>pH adjustment </text><reference><text>for degassing <class-ref scheme="cpc">C02F1/20</class-ref>; using ion-exchange <class-ref scheme="cpc">C02F1/42</class-ref>; for flocculation or precipitation of suspended impurities <class-ref scheme="cpc">C02F1/52</class-ref>; for removing dissolved compounds <class-ref scheme="cpc">C02F1/58</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/68" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/68</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by addition of specified substances, e.g. trace elements, for ameliorating potable water </text><reference><text>medicinal water <class-ref scheme="cpc">A61K</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/681" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/681</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by addition of solid materials for removing an oily layer on water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/682" definition-exists="false" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/682</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by addition of chemical compounds for dispersing an oily layer on water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/683" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/683</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by addition of complex-forming compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/685" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/685</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices for dosing the additives</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/686" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/686</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices for dosing liquid additives</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/687" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/687</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices for dosing solid compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/688" definition-exists="true" ipc-concordant="C02F1/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/688</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices in which the water progressively dissolves a solid compound</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/70" definition-exists="true" ipc-concordant="C02F1/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by reduction </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/4676</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/705" definition-exists="true" ipc-concordant="C02F1/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/705</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Reduction by metals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F1/72" definition-exists="true" ipc-concordant="C02F1/72" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/72</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/4672</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/722" definition-exists="true" ipc-concordant="C02F1/72" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/722</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oxidation by peroxides</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/725" definition-exists="true" ipc-concordant="C02F1/72" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/725</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by catalytic oxidation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/727" definition-exists="true" ipc-concordant="C02F1/72" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/727</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using pure oxygen or oxygen rich gas</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/74" definition-exists="true" ipc-concordant="C02F1/74" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/74</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with air </text><reference><text>aeration of stretches of water <class-ref scheme="cpc">C02F7/00</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/76" definition-exists="true" ipc-concordant="C02F1/76" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/76</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with halogens or compounds of halogens </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/4674</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/763" definition-exists="true" ipc-concordant="C02F1/76" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/763</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices for the addition of such compounds in gaseous form</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F1/766" definition-exists="true" ipc-concordant="C02F1/76" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/766</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F1/78" definition-exists="true" ipc-concordant="C02F1/78" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F1/78</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with ozone </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/4672</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C02F3/00" definition-exists="true" ipc-concordant="C02F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Biological treatment of water, waste water, or sewage </text><CPC-specific-text><reference><text><class-ref scheme="cpc">C02F1/006</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F3/001" definition-exists="false" ipc-concordant="C02F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2003/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using granular carriers or supports for the microorganisms</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F3/003" definition-exists="false" ipc-concordant="C02F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2003/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using activated carbon or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/005" definition-exists="true" ipc-concordant="C02F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combined electrochemical biological processes </text><reference><text>aeration by electrolytically produced oxygen bubbles <class-ref scheme="cpc">C02F3/202</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/006" definition-exists="true" ipc-concordant="C02F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Regulation methods for biological treatment</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F3/008" definition-exists="false" ipc-concordant="C02F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2003/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anaerobic baffled reactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/02" definition-exists="true" ipc-concordant="C02F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aerobic processes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/025" definition-exists="false" ipc-concordant="C02F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Biological purification using sources of oxygen other than air, oxygen or ozone</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/04" definition-exists="true" ipc-concordant="C02F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using trickle filters</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/043" definition-exists="true" ipc-concordant="C02F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices for distributing water over trickle filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/046" definition-exists="true" ipc-concordant="C02F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Soil filtration</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/06" definition-exists="true" ipc-concordant="C02F3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using submerged filters</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/08" definition-exists="true" ipc-concordant="C02F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using moving contact bodies</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/082" definition-exists="false" ipc-concordant="C02F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Rotating biological contactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/085" definition-exists="false" ipc-concordant="C02F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fluidized beds</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/087" definition-exists="false" ipc-concordant="C02F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Floating beds with contact bodies having a lower density than water</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/10" definition-exists="true" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Packings</text></title-part><title-part><text>Fillings</text></title-part><title-part><text>Grids </text><reference><text>packing elements in general <class-ref scheme="cpc">B01J19/30</class-ref>, <class-ref scheme="cpc">B01J19/32</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/101" definition-exists="true" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arranged-type packing, e.g. stacks, arrays</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/102" definition-exists="true" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Permeable membranes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/103" definition-exists="true" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Textile-type packing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/104" definition-exists="true" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Granular carriers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/105" definition-exists="true" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Characterized by the chemical composition</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/106" definition-exists="false" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carbonaceous materials</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/107" definition-exists="false" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Inorganic materials, e.g. sand, silicates</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/108" definition-exists="false" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/108</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Immobilising gels, polymers or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/109" definition-exists="false" ipc-concordant="C02F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/109</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Characterized by the shape </text><reference><text><class-ref scheme="cpc">C02F3/104</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/12" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Activated sludge processes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/1205" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular type of activated sludge processes</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/121" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/121</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multistep treatment</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1215" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1215</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1221" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1221</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising treatment of the recirculated sludge</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1226" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising an absorbent material suspended in the mixed liquor</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1231" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1231</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Treatments of toxic sewage</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/1236" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1236</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular type of activated sludge installations</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1242" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1242</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Small compact installations for use in homes, apartment blocks, hotels or the like</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F3/1247" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1247</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising circular tanks with elements, e.g. decanters, aeration basins, in the form of segments, crowns or sectors</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1252" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1252</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylindrical tanks with horizontal axis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1257" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1257</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oxidation ditches</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1263" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1263</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sequencing batch reactors [SBR]</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1268" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1268</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Membrane bioreactor systems</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F3/1273" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1273</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Submerged membrane bioreactors</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/1278" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1278</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Provisions for mixing or aeration of the mixed liquor</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1284" definition-exists="true" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mixing devices</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1289" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1289</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Aeration by saturation under super-atmospheric pressure</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/1294" definition-exists="false" ipc-concordant="C02F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/1294</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>&quot;Venturi&quot; aeration means</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/14" definition-exists="true" ipc-concordant="C02F3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using surface aeration</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/145" definition-exists="false" ipc-concordant="C02F3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protection against aerosols</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/16" definition-exists="false" ipc-concordant="C02F3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the aerator having a vertical axis</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F3/165" definition-exists="false" ipc-concordant="C02F3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using vertical aeration channels</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/18" definition-exists="false" ipc-concordant="C02F3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the aerator having a horizontal axis</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/20" definition-exists="true" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using diffusers</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/201" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/201</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/202" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/202</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Aeration by electrolytically produced oxygen bubbles</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/203" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/203</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Swing diffusers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/205" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F3/206" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/206</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with helical screw impellers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="C02F3/207" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/207</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with axial thrust propellers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/208" definition-exists="false" ipc-concordant="C02F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/208</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Membrane aeration </text><reference><text><class-ref scheme="cpc">C02F3/201</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/22" definition-exists="true" ipc-concordant="C02F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using circulation pipes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/223" definition-exists="false" ipc-concordant="C02F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using &quot;air-lift&quot;</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/226" definition-exists="true" ipc-concordant="C02F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>&quot;Deep shaft&quot; processes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/24" definition-exists="false" ipc-concordant="C02F3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using free-fall aeration or spraying</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/26" definition-exists="false" ipc-concordant="C02F3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using pure oxygen or oxygen-rich gas</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/28" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Anaerobic digestion processes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2806" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C02F3/2806</classification-symbol><class-title date-revised="2017-08-01"><title-part><CPC-specific-text><text>Anaerobic processes using solid supports for microorganisms</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2813" definition-exists="false" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2813</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anaerobic contact processes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/282" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/282</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anaerobic sequencing batch reactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2826" definition-exists="false" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2826</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anaerobic filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2833" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2833</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using fluidized bed reactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/284" definition-exists="false" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anaerobic baffled reactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2846" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2846</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using upflow anaerobic sludge blanket [UASB] reactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2853" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2853</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using anaerobic membrane bioreactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/286" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/286</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>including two or more steps</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/2866" definition-exists="false" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2866</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular arrangements for anaerobic reactors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/2873" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2873</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with internal draft tube circulation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/288" definition-exists="false" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/288</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising septic tanks combined with a filter</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/2886" definition-exists="true" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2886</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Two story combinations of the Imhoff tank type</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/2893" definition-exists="false" ipc-concordant="C02F3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/2893</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with biogas recycling</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/30" definition-exists="true" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aerobic and anaerobic processes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/301" definition-exists="true" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/301</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Aerobic and anaerobic treatment in the same reactor</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/302" definition-exists="true" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/302</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nitrification and denitrification treatment </text><reference><text><class-ref scheme="cpc">C02F3/308</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/303" definition-exists="true" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/303</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the nitrification</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/305" definition-exists="true" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the denitrification</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F3/306" definition-exists="false" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/306</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Denitrification of water in soil</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/307" definition-exists="false" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/307</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/308" definition-exists="true" ipc-concordant="C02F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/308</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Biological phosphorus removal</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/32" definition-exists="false" ipc-concordant="C02F3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the animals or plants used, e.g. algae</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/322" definition-exists="false" ipc-concordant="C02F3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>use of algae</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F3/325" definition-exists="false" ipc-concordant="C02F3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/325</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>as symbiotic combination of algae and bacteria</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/327" definition-exists="true" ipc-concordant="C02F3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/327</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by animals and plants</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F3/34" definition-exists="true" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C02F3/34</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>characterised by the microorganisms used</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/341" definition-exists="true" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/341</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Consortia of bacteria</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/342" definition-exists="true" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/342</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the enzymes used</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/343" definition-exists="false" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/343</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for digestion of grease, fat, oil</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/344" definition-exists="false" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/344</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for digestion of mineral oil</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/345" definition-exists="false" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/345</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for biological oxidation or reduction of sulfur compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/346" definition-exists="false" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/346</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Iron bacteria</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/347" definition-exists="false" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/347</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Use of yeasts or fungi </text><reference><text><class-ref scheme="cpc">C02F3/322</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F3/348" definition-exists="true" ipc-concordant="C02F3/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F3/348</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by the way or the form in which the microorganisms are added or dosed</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C02F5/00" definition-exists="true" ipc-concordant="C02F5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Softening water</text></title-part><title-part><text>Preventing scale</text></title-part><title-part><text>Adding scale preventatives or scale removers to water, e.g. adding sequestering agents </text><reference><text>softening using ion-exchange <class-ref scheme="cpc">C02F1/42</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F5/02" definition-exists="true" ipc-concordant="C02F5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Softening water by precipitation of the hardness</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F5/025" definition-exists="false" ipc-concordant="C02F5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hot-water softening devices</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F5/04" definition-exists="true" ipc-concordant="C02F5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using phosphates </text><reference><text><class-ref scheme="cpc">C02F5/06</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F5/06" definition-exists="true" ipc-concordant="C02F5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using calcium compounds</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F5/08" definition-exists="true" ipc-concordant="C02F5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F5/083" definition-exists="true" ipc-concordant="C02F5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mineral agents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F5/086" definition-exists="true" ipc-concordant="C02F5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Condensed phosphates</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F5/10" definition-exists="true" ipc-concordant="C02F5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using organic substances</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F5/105" definition-exists="true" ipc-concordant="C02F5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>combined with inorganic substances</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F5/12" definition-exists="true" ipc-concordant="C02F5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing nitrogen </text><reference><text><class-ref scheme="cpc">C02F5/14</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F5/125" definition-exists="true" ipc-concordant="C02F5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>combined with inorganic substances</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F5/14" definition-exists="true" ipc-concordant="C02F5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing phosphorus</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F5/145" definition-exists="true" ipc-concordant="C02F5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F5/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>combined with inorganic substances</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C02F7/00" definition-exists="true" ipc-concordant="C02F7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Aeration of stretches of water</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C02F9/00" definition-exists="true" ipc-concordant="C02F9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2023-01-01" status="published"><classification-symbol>C02F9/00</classification-symbol><class-title date-revised="2023-01-01"><title-part><text>Multistage treatment of water, waste water or sewage</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This group <u>covers</u> combined treatment operations, carried out in a defined order in three or more different treatment stages, each stage occurring in a separate location, e.g. apparatus, reactor or compartment.</note-paragraph><note-paragraph>This group <u>does not cover</u> treatments where the essential characteristic resides in an individual step of the treatment, which treatments are covered by groups <class-ref scheme="cpc">C02F1/00</class-ref> - <class-ref scheme="cpc">C02F7/00</class-ref>.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F9/20" definition-exists="true" ipc-concordant="C02F9/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2023-01-01" status="published"><classification-symbol>C02F9/20</classification-symbol><class-title date-revised="2023-01-01"><title-part><text>Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="C02F11/00" definition-exists="true" ipc-concordant="C02F11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment of sludge</text></title-part><title-part><text>Devices therefor</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/002" definition-exists="true" ipc-concordant="C02F11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sludge treatment using liquids immiscible with water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/004" definition-exists="true" ipc-concordant="C02F11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sludge detoxification</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/006" definition-exists="false" ipc-concordant="C02F11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Electrochemical treatment, e.g. electro-oxidation or electro-osmosis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/008" definition-exists="true" ipc-concordant="C02F11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sludge treatment by fixation or solidification</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/02" definition-exists="true" ipc-concordant="C02F11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Biological treatment</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/04" definition-exists="true" ipc-concordant="C02F11/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Anaerobic treatment</text></title-part><title-part><text>Production of methane by such processes</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/06" definition-exists="true" ipc-concordant="C02F11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by oxidation </text><reference><text>incinerators for burning waste liquors, e.g. sulfite liquor from paper-making plant <class-ref scheme="cpc">F23G7/04</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/08" definition-exists="true" ipc-concordant="C02F11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wet air oxidation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/083" definition-exists="false" ipc-concordant="C02F11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using deep well reactors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/086" definition-exists="true" ipc-concordant="C02F11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in the supercritical state</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/10" definition-exists="true" ipc-concordant="C02F11/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by pyrolysis</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/12" definition-exists="true" ipc-concordant="C02F11/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/12</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>by de-watering, drying or thickening</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/121" definition-exists="false" ipc-concordant="C02F11/121" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/121</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>by mechanical de-watering</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/122" definition-exists="false" ipc-concordant="C02F11/122" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/122</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using filter presses </text><reference><text><class-ref scheme="cpc">C02F11/123</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/123" definition-exists="false" ipc-concordant="C02F11/123" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/123</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using belt or band filters</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/125" definition-exists="false" ipc-concordant="C02F11/125" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/125</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using screw filters</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/126" definition-exists="false" ipc-concordant="C02F11/126" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/126</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using drum filters</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/127" definition-exists="true" ipc-concordant="C02F11/127" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/127</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>by centrifugation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/128" definition-exists="true" ipc-concordant="C02F11/128" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2019-01-01" status="published"><classification-symbol>C02F11/128</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using batch processes</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/13" definition-exists="true" ipc-concordant="C02F11/13" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/13</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>by heating</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/131" definition-exists="false" ipc-concordant="C02F11/131" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/131</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using electromagnetic or ultrasonic waves</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/14" definition-exists="true" ipc-concordant="C02F11/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with addition of chemical agents</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/143" definition-exists="false" ipc-concordant="C02F11/143" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/143</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using inorganic substances </text><reference><text><class-ref scheme="cpc">C02F11/148</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="C02F11/145" definition-exists="false" ipc-concordant="C02F11/145" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/145</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using calcium compounds</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/147" definition-exists="false" ipc-concordant="C02F11/147" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/147</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>using organic substances </text><reference><text><class-ref scheme="cpc">C02F11/148</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="C02F11/148" definition-exists="true" ipc-concordant="C02F11/148" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/148</classification-symbol><class-title date-revised="2019-01-01"><title-part><text>Combined use of inorganic and organic substances, being added in the same treatment step</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/15" definition-exists="true" ipc-concordant="C02F11/15" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/15</classification-symbol><class-title date-revised="2020-05-01"><title-part><text>by treatment with electric, magnetic or electromagnetic fields</text></title-part><title-part><text>by treatment with ultrasonic waves </text><reference><text>for the purpose of heating <class-ref scheme="cpc">C02F11/131</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/16" definition-exists="true" ipc-concordant="C02F11/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using drying or composting beds</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="C02F11/18" definition-exists="true" ipc-concordant="C02F11/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by thermal conditioning </text><reference><text>by pyrolysis <class-ref scheme="cpc">C02F11/10</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/185" definition-exists="true" ipc-concordant="C02F11/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-05-01" status="published"><classification-symbol>C02F11/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by pasteurisation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="C02F11/20" definition-exists="false" ipc-concordant="C02F11/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F11/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by freezing</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="C02F101/00" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/00</classification-symbol>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C02F101/00" definition-exists="true" ipc-concordant="C02F101/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nature of the contaminant</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F101/003" definition-exists="false" ipc-concordant="C02F101/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/003</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Explosive compounds, e.g. TNT</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F101/006" definition-exists="false" ipc-concordant="C02F101/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/006</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Radioactive compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F101/10" definition-exists="false" ipc-concordant="C02F101/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inorganic compounds</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/101" definition-exists="false" ipc-concordant="C02F101/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/101</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Sulfur compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/103" definition-exists="false" ipc-concordant="C02F101/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/103</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Arsenic compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/105" definition-exists="false" ipc-concordant="C02F101/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/105</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Phosphorus compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/106" definition-exists="false" ipc-concordant="C02F101/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/106</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Selenium compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/108" definition-exists="false" ipc-concordant="C02F101/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/108</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Boron compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/12" definition-exists="false" ipc-concordant="C02F101/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halogens or halogen-containing compounds</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/14" definition-exists="false" ipc-concordant="C02F101/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluorine or fluorine-containing compounds</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/16" definition-exists="false" ipc-concordant="C02F101/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen compounds, e.g. ammonia</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/163" definition-exists="false" ipc-concordant="C02F101/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/163</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Nitrates</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/166" definition-exists="false" ipc-concordant="C02F101/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/166</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Nitrites</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/18" definition-exists="false" ipc-concordant="C02F101/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cyanides</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/20" definition-exists="false" ipc-concordant="C02F101/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heavy metals or heavy metal compounds</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/203" definition-exists="false" ipc-concordant="C02F101/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/203</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Iron or iron compound</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/206" definition-exists="false" ipc-concordant="C02F101/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/206</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Manganese or manganese compounds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/22" definition-exists="false" ipc-concordant="C02F101/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chromium or chromium compounds, e.g. chromates</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F101/30" definition-exists="false" ipc-concordant="C02F101/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Organic compounds</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/301" definition-exists="false" ipc-concordant="C02F101/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/301</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Detergents, surfactants</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/303" definition-exists="false" ipc-concordant="C02F101/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/303</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Complexing agents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/305" definition-exists="false" ipc-concordant="C02F101/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/305</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Endocrine disruptive agents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/306" definition-exists="false" ipc-concordant="C02F101/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/306</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Pesticides</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/308" definition-exists="false" ipc-concordant="C02F101/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/308</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Dyes; Colorants; Fluorescent agents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/32" definition-exists="false" ipc-concordant="C02F101/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrocarbons, e.g. oil</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/322" definition-exists="false" ipc-concordant="C02F101/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/322</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Volatile compounds, e.g. benzene</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/325" definition-exists="false" ipc-concordant="C02F101/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/325</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Emulsions</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/327" definition-exists="false" ipc-concordant="C02F101/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/327</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Polyaromatic Hydrocarbons [PAH&apos;s]</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/34" definition-exists="false" ipc-concordant="C02F101/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing oxygen</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/345" definition-exists="false" ipc-concordant="C02F101/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/345</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Phenols</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/36" definition-exists="false" ipc-concordant="C02F101/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing halogen</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/363" definition-exists="false" ipc-concordant="C02F101/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/363</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>PCB&apos;s; PCP&apos;s</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F101/366" definition-exists="false" ipc-concordant="C02F101/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2101/366</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Dioxine; Furan</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/38" definition-exists="false" ipc-concordant="C02F101/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing nitrogen</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F101/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2101/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>containing sulfur</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C02F103/00" definition-exists="true" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nature of the water, waste water, sewage or sludge to be treated</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/001" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/001</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Runoff or storm water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/002" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/002</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Grey water, e.g. from clothes washers, showers or dishwashers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/003" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/003</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/005" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/005</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Black water originating from toilets</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/006" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/006</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Dental effluents</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/007" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/007</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Contaminated open waterways, rivers, lakes or ponds</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/008" definition-exists="false" ipc-concordant="C02F103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/008</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Originating from marine vessels, ships and boats, e.g. bilge water or ballast water</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/02" definition-exists="false" ipc-concordant="C02F103/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Non-contaminated water, e.g. for industrial water supply</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/023" definition-exists="false" ipc-concordant="C02F103/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/023</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Water in cooling circuits</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/026" definition-exists="false" ipc-concordant="C02F103/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/026</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>Treating water for medical or cosmetic purposes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/04" definition-exists="false" ipc-concordant="C02F103/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>C02F2103/04</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>for obtaining ultra-pure water</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/06" definition-exists="false" ipc-concordant="C02F103/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Contaminated groundwater or leachate</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/08" definition-exists="false" ipc-concordant="C02F103/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Seawater, e.g. for desalination</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/10" definition-exists="false" ipc-concordant="C02F103/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from quarries or from mining activities</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/12" definition-exists="false" ipc-concordant="C02F103/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the silicate or ceramic industries, e.g. waste waters from cement or glass factories</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/14" definition-exists="false" ipc-concordant="C02F103/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Paint wastes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/16" definition-exists="false" ipc-concordant="C02F103/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/18" definition-exists="false" ipc-concordant="C02F103/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the purification of gaseous effluents</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/20" definition-exists="false" ipc-concordant="C02F103/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from animal husbandry</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/22" definition-exists="false" ipc-concordant="C02F103/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the processing of animals, e.g. poultry, fish, or parts thereof</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/24" definition-exists="false" ipc-concordant="C02F103/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from tanneries</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/26" definition-exists="false" ipc-concordant="C02F103/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the processing of plants or parts thereof</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/28" definition-exists="false" ipc-concordant="C02F103/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the paper or cellulose industry</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/30" definition-exists="false" ipc-concordant="C02F103/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the textile industry</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/32" definition-exists="false" ipc-concordant="C02F103/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the food or foodstuff industry, e.g. brewery waste waters</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/322" definition-exists="false" ipc-concordant="C02F103/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/322</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>from vegetable oil production, e.g. olive oil production</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/325" definition-exists="false" ipc-concordant="C02F103/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/325</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>from processes relating to the production of wine products</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/327" definition-exists="false" ipc-concordant="C02F103/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/327</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>from processes relating to the production of dairy products</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/34" definition-exists="false" ipc-concordant="C02F103/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>C02F2103/34</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>from industrial activities not provided for in groups <class-ref scheme="cpc">C02F2103/12</class-ref>&#160;-&#160;<class-ref scheme="cpc">C02F2103/32</class-ref></text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/343" definition-exists="false" ipc-concordant="C02F103/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/343</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>from the pharmaceutical industry, e.g. containing antibiotics</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/346" definition-exists="false" ipc-concordant="C02F103/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/346</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>from semiconductor processing, e.g. waste water from polishing of wafers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/36" definition-exists="false" ipc-concordant="C02F103/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the manufacture of organic compounds</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F103/365" definition-exists="false" ipc-concordant="C02F103/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-10-01" status="published"><classification-symbol>C02F2103/365</classification-symbol><class-title date-revised="2015-10-01"><title-part><CPC-specific-text><text>from petrochemical industry (e.g. refineries)</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F103/38" definition-exists="false" ipc-concordant="C02F103/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Polymers</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F103/40" definition-exists="false" ipc-concordant="C02F103/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from the manufacture or use of photosensitive materials</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/42" definition-exists="false" ipc-concordant="C02F103/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from bathing facilities, e.g. swimming pools</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F103/44" definition-exists="false" ipc-concordant="C02F103/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2103/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from vehicle washing facilities</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C02F201/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus for treatment of water, waste water or sewage</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F201/001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Build in apparatus for autonomous on board water supply and wastewater treatment (e.g. for aircrafts, cruiseships, oil drilling platforms, railway trains, space stations)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F201/002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Construction details of the apparatus</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coaxial constructions, e.g. a cartridge located coaxially within another</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Seals, connections</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Valves</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/006" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cartridges</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/007" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modular design</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F201/008" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mobile apparatus and plants, e.g. mounted on a vehicle </text><reference><text>for biological treatment <class-ref scheme="cpc">C02F2203/008</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F201/009" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/009</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells </text><reference><text>for electrolysis apparatus <class-ref scheme="cpc">C02F2201/46165</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F201/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details relating to UV-irradiation devices</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/322" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lamp arrangement</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3221" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3221</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lamps suspended above a water surface or pipe</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3222" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3222</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units using UV-light emitting diodes [LED]</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3223" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3223</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Single elongated lamp located on the central axis of a turbular reactor</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3224" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3224</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units using UV-light guiding optical fibers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3225" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3225</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lamps immersed in an open channel, containing the liquid to be treated</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3226" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3226</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units using UV-light emitting lasers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3227" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3227</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units with two or more lamps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/3228" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/3228</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units having reflectors, e.g. coatings, baffles, plates, mirrors</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/324" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/324</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lamp cleaning installations, e.g. brushes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/326" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/326</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lamp control systems</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/328" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/328</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Having flow diverters (baffles)</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F201/46" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus for electrochemical processes</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F201/461" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/461</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electrolysis apparatus</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="C02F201/46105" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46105</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details relating to the electrolytic devices</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C02F201/4611" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/4611</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluid flow</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C02F201/46115" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46115</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electrolytic cell with membranes or diaphragms</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C02F201/4612" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/4612</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling or monitoring</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F201/46125" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46125</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electrical variables</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="13" additional-only="true" sort-key="C02F201/4613" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/4613</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inversing polarity</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="13" additional-only="true" sort-key="C02F201/46135" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46135</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Voltage</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="13" additional-only="true" sort-key="C02F201/4614" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/4614</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Current</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F201/46145" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluid flow</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="C02F201/4615" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/4615</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Time</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C02F201/46155" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/46155</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heating or cooling</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="C02F201/4616" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2201/4616</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Power supply</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F301/022" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2301/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Laminar</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F301/024" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2301/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Turbulent</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F301/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2301/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pressure conditions</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F301/063" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2301/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Underpressure, vacuum</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F301/103" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2301/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Psychrophilic treatment</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F301/106" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2301/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thermophilic treatment</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F303/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2303/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Disinfection</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F303/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2303/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sludge reduction, e.g. by lysis</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F303/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2303/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Prevention of biofouling</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F303/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2303/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separation of coarse particles, e.g. by using sieves or screens</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C02F305/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Use of specific compounds during water treatment</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Specific form of oxidant</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F305/023" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reactive oxygen species, singlet oxygen, OH radical</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="C02F305/026" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fenton&apos;s reagent</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Surfactants, used as part of a formulation or alone</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nutrients for stimulating the growth of microorganisms</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nanoparticles or nanotubes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Photocatalysts</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Inert solids used as ballast for improving sedimentation </text><reference><text><class-ref scheme="cpc">C02F3/1226</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F305/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2305/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Additives which dissolves or releases substances when predefined environmental conditions are reached, e.g. pH or temperature</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="C02F307/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Location of water treatment or water treatment device</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>as part of a bottle</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>as part of a pitcher or jug</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mounted on or being part of a faucet, shower handle or showerhead</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment of wastewater in the sewer, e.g. to reduce grease, odour</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>as part of a potable water dispenser, e.g. for use in homes or offices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>as part of household appliances such as dishwashers, laundry washing machines or vacuum cleaners</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="C02F307/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>C02F2307/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment of water in water supply networks, e.g. to prevent bacterial growth</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme>