Treatment of water

Details Treatment of water Treatment of water

1991-07-19

1992-10-20

Silverman, Stanley S.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210715, 210717, 210722, 210724, 210912, C02F 158, C02F 164

Patent

active

051567466

ABSTRACT:
A water quality improvement process is provided for acid water containing sulphate and/or sulphite ions. The water is continuously fed into a fluidized bed containing calcium carbonate particles. The water consumes calcium carbonate and has its pH increased while calcium sulphate CaSO.sub.4 and/or CaSO.sub.3 are produced.

REFERENCES:
patent: 1310382 (1919-07-01), Auld et al.
patent: 1765424 (1930-06-01), Hageman et al.
patent: 3617560 (1971-11-01), Deul
patent: 3855125 (1974-12-01), Lin
patent: 3929416 (1975-12-01), Tanaka et al.
patent: 4208393 (1980-06-01), LeBel
patent: 4764284 (1988-08-01), Jansen
patent: 4861493 (1989-08-01), Jansen

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