Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
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.
Fyson John R.
Glover Martyn S.
Henson David M.
Eastman Kodak Company
McCarthy Neil
Tucker J. Lanny
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