Treatment process for contaminated waste

Details Treatment process for contaminated waste Treatment process for contaminated waste

1997-03-25

1999-04-27

Straub, Gary P.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

588231, 588251, 588256, 405128, 405263, A62D 300

Patent

active

058980938

ABSTRACT:
A process for treating contaminated waste to stabilize environmentally harmful heavy metal. The contaminated waste is contacted with a mixture of (i) inorganic sulfide, (ii) calcium phosphate to prevent oxidation of the sulfide and (iii) calcium carbonate, the last acting as a base. Water is added to enhance mass transfer during the mixing. The calcium carbonate may be mixed with calcium oxide, to provide an additional base.

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