Method of disposing of wastes containing heavy metal compounds

Details Method of disposing of wastes containing heavy metal compounds Method of disposing of wastes containing heavy metal compounds

1989-08-21

1990-08-14

Hruskoci, Peter

Liquid purification or separation

Processes

Chemical treatment

210759, 210911, 210912, 423DIG20, 106716, 106736, 106815, C02F 1114

Patent

active

049485164

ABSTRACT:
A method of disposing of wastes containing heavy metal compounds by neutralizing the wastes, oxidizing the neutralized wastes, then solidifying the oxidized wastes using conventional mineral binding agents such as Portland cement. This method is of particular interest in treating arsenic sulfide containing aqueous sludges produced in the manufacture of phosphoric acid.

REFERENCES:
patent: 3980558 (1976-09-01), Thompson
patent: 4118243 (1978-10-01), Sandesara
patent: 4142912 (1979-03-01), Young
patent: 4201667 (1980-05-01), Liao
patent: 4404105 (1983-09-01), Rysman de Lockerente et al.
patent: 4419246 (1983-12-01), Jayawant

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