IPC Subgroup
C02F 11/02 Biological treatment
Introduced: January 1980
Last revised: January 2006
Full Title
Treatment of sludge; Devices therefor > Biological treatment
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- Subclass:
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1 direct subcode
Child Classifications
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- C02F 11/04 Anaerobic treatment; Production of methane by such processes