Method for eliminating iron from a photographic effluent

Details Method for eliminating iron from a photographic effluent Method for eliminating iron from a photographic effluent

1997-09-24

1999-07-20

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210725, 210726, 210727, 210912, 423140, C02F 164

Patent

active

059252561

ABSTRACT:
The present invention concerns the treatment of an aqueous effluent and consists of ridding it of the iron which it contains, notably in the form of a complex. The method according to the invention consists of treating this effluent by successively a silicate, and a magnesium and aluminium hydroxycarbonate, then decanting and filtering. The method according to the invention is particularly useful in the treatment of photographic effluents.

REFERENCES:
patent: 4155847 (1979-05-01), Tanaka et al.
patent: 4744825 (1988-05-01), Chen et al.
patent: 4752397 (1988-06-01), Sood
patent: 5055199 (1991-10-01), O'Neill et al.
patent: 5227020 (1993-07-01), Endres et al.
patent: 5549820 (1996-08-01), Bober et al.
Research Disclosure, vol. 134, No. 54, Jun. 1975, pp. 46-47, entitled Method for Recovery and Reuse of Iron Cyanides Used in Photographic Processing.

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