Sludge inerting method

Details Sludge inerting method Sludge inerting method

2005-11-08

2005-11-08

Kreck, John (Department: 3673)

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

C588S407000, C588S313000, C588S321000

Reexamination Certificate

active

06962562

ABSTRACT:
Process for rendering inert a sludge (1) comprising heavy metals and organic matter, according to which phosphoric acid (2) is added to the sludge and the latter is subjected to calcination (6). A hydraulic binder (9) is mixed with the product of the calcination (7) and mixed with water (8). The resulting mixture (11) is subjected to setting and curing.

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patent: 5037286 (1991-08-01), Roberts
patent: 6084139 (2000-07-01), Van Der Giessen et al.
patent: 6132355 (2000-10-01), Derie
patent: 6136063 (2000-10-01), Brosnan
patent: 97 31874 (1997-09-01), None

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