Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation
Patent
1996-10-07
1999-01-19
Suchfield, George
Hazardous or toxic waste destruction or containment
Containment
Solidification, vitrification, or cementation
405128, A62D 300, B09D 300
Patent
active
058609083
ABSTRACT:
Ash residues produced from solid waste combustion and certain industrial residues which are sometimes contacted with water for dust control, quenched for temperature reduction or subjected to water separation methods, have lead (Pb) and other heavy metals in sufficient solubility to sometimes fail the USEPA TCLP test and other acid leaching tests. Addition of a water-insoluble precipitating agent, such as pulverized phosphate rock or a precipitating agent coated with a water-insoluble film, during waste generation or collection allows the waste to pass TCLP regulatory testing, reduces Pb leaching under acid conditions and provides a water-insoluble stabilizing seed which will remain with the residue throughout water spraying, quenching or wet processing.
REFERENCES:
patent: 5234498 (1993-08-01), Graves, Jr.
patent: 5284636 (1994-02-01), Goff et al.
patent: 5550314 (1996-08-01), Laughlin
patent: 5569155 (1996-10-01), Pal et al.
patent: 5645518 (1997-07-01), Wagh et al.
patent: 5769938 (1998-06-01), Ueshima et al.
LandOfFree
Water insoluble heavy metal stabilization process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water insoluble heavy metal stabilization process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water insoluble heavy metal stabilization process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1243263