Method for stabilizing metals in wastewater sludge

Details Method for stabilizing metals in wastewater sludge Method for stabilizing metals in wastewater sludge

1992-03-19

1993-11-23

McCarthy, Neil M.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210751, 210912, 588256, C02F 162, C02F 1100

Patent

active

052641350

ABSTRACT:
A method for treating the sludge from industrial wastewater streams which contain soluble metals by adding to the sludge an effective amount of a metal complexing agent sufficient to inhibit leaching of the metal from the sludge solids into the environment. The metal complexing agents comprise diethylcarbamate, dimethyldithiocarbamate, and sodium trithiocarbonate or salts thereof.

REFERENCES:
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patent: 4354942 (1982-10-01), Kaczur et al.
patent: 4612125 (1986-09-01), Elfine
patent: 4678584 (1987-07-01), Elfine
patent: 4943377 (1990-07-01), Legare
patent: 4957634 (1990-09-01), Bowers, Jr.
Chem. Abs. 112:204 187g.

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