C
CHEMISTRY; METALLURGY
C02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1/00
Treatment of water, waste water, or sewage
C02F1/46
by electrochemical methods
C02F1/46104
Devices therefor; Their operating or servicing
C02F1/4618
for producing "ionised" acidic or basic water