Biological treatment of water, waste water, or sewage

Child Classifications

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• C02F 2003/001
• C02F 2003/008
• C02F 3/005
• C02F 3/006
• C02F 3/02 Aerobic processes
• C02F 3/28 Anaerobic digestion processes
• C02F 3/30 Aerobic and anaerobic processes
• C02F 3/32 characterised by the animals or plants used, e.g. algae
• C02F 3/34 characterised by the microorganisms used