Removal of complexed zinc-cyanide from wastewater with improved

Details Removal of complexed zinc-cyanide from wastewater with improved Removal of complexed zinc-cyanide from wastewater with improved

1985-06-25

1986-08-19

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210721, 210724, 210726, 210904, 210912, 423101, 423367, C02F 152, C02F 174

Patent

active

046068295

ABSTRACT:
A method of removing complexed zinc-cyanide from wastewater involving a multiple stage process including, in a first step, control of ferrous ions to a critical minimum concentration of 250 to 400 ppm, together with pH control in the first and also a second step, together with recycling of a portion of sludge precipitated in the process. Improved sludge stability is achieved by aeration to oxidize precipitated ferrous hydroxide to ferric hydroxide, immediately before settling the sludge in a thickener.

REFERENCES:
patent: 3575853 (1971-04-01), Gaughan et al.
patent: 3617559 (1971-11-01), Cywin
patent: 3738932 (1973-06-01), Kostenbader
patent: 3931007 (1976-01-01), Sugano et al.
patent: 4119536 (1978-10-01), Iwase et al.
patent: 4169053 (1979-09-01), Sakakibara et al.
patent: 4211646 (1980-07-01), Westbrook et al.
patent: 4312760 (1982-01-01), Neville
patent: 4465597 (1984-08-01), Herman et al.
patent: 4543189 (1985-09-01), Rice et al.

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