Decontamination process for reducing heavy metal pollution

Details Decontamination process for reducing heavy metal pollution Decontamination process for reducing heavy metal pollution

1988-08-15

1993-11-16

Wyse, Tom

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210724, 210730, 210912, C02F 162

Patent

active

052620620

ABSTRACT:
A decontamination treatment of process water is disclosed herein originating from electroplating/metal finishing and etching operations wherein the process water is loaded with heavy metal ions. The inventive process combines predetermined quantities of alkali/acid solutions together with a quantity of Sodium Humate so as to produce a disposable sludge which is environmentally safe and poses the least risk for leeching of harmful metals from the resultant sludge.

REFERENCES:
patent: 4025430 (1977-05-01), Pagel
patent: 4724084 (1988-02-01), Pahmeier et al.
patent: 4746442 (1988-05-01), Calemma et al.

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