Filtration technique

Details Filtration technique Filtration technique

1994-11-16

1995-08-01

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210721, 210759, 210778, C02F 172, B01D 3702

Patent

active

054377900

ABSTRACT:
A method for increasing the filtration rate of a precipitate produced from a photographic effluent includes treating the effluent with hydrogen peroxide and an alkaline earth metal salt to form a precipitate and adding to the precipitate a diatomaceous earth filtering aid and then filtering the precipitate.

REFERENCES:
patent: 3767572 (1973-10-01), Bober et al.
patent: 4149975 (1979-04-01), Keim et al.
patent: 4201670 (1980-05-01), Baur
patent: 5069817 (1991-12-01), Schmid et al.

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