C
CHEMISTRY; METALLURGY
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C02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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C02F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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C02F2201/00
Apparatus for treatment of water, waste water or sewage
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C02F2201/009
Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
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