Process for removing volatile components from soils and sludges

Details Process for removing volatile components from soils and sludges Process for removing volatile components from soils and sludges

1993-10-12

1995-09-26

Mai, Ngoclan

Hazardous or toxic waste destruction or containment

Destruction or containment of radioactive waste

432 13, 588 20, 47 142, G21F 900

Patent

active

054535620

ABSTRACT:
The present invention relates to a method for separating chemical contaminants such as volatile and semi-volatile chemicals and polychlorinated biphenyls (PCBs), even if the contaminants are present at low concentrations, from mixed wastes, such as soils or sludges contaminated with hazardous and radioactive components. The process comprises subjecting the mixed waste to vacuum at a temperature effective to volatilize the contaminants but below incineration temperature, while continuously removing the evolved vapors, for a period of time sufficient to effect the desired degree of separation of the volatile and semi-volatile contaminants. The evolved vapors may be collected and condensed for off-site disposal and the remaining solids may be properly disposed of or further treated.

REFERENCES:
patent: 4203863 (1980-05-01), Knolik et al.
patent: 4314877 (1982-02-01), Queiser et al.
patent: 4481135 (1984-11-01), Aspart et al.
patent: 4566204 (1986-01-01), Fnesner et al.
patent: 4606283 (1986-08-01), Des Ormeaux et al.
patent: 4675129 (1987-06-01), Baatz et al.
patent: 4738206 (1988-04-01), Noland
patent: 4782625 (1988-11-01), Gerken et al.
patent: 4902446 (1990-02-01), Erbse et al.
patent: 4951417 (1990-08-01), Gerken et al.
patent: 4977839 (1990-12-01), Fochtman et al.
patent: 5117771 (1992-06-01), Summers
patent: 5121699 (1992-06-01), Frank
patent: 5123364 (1992-06-01), Gitman et al.
patent: 5176087 (1993-01-01), Noland et al.
patent: 5191155 (1993-03-01), Driemel et al.
patent: 5253597 (1993-10-01), Swanstrom et al.
"Soil Aeration Pilot Study Work Plan" by Canonie Engineers, Project CH 84-130, Oct. 1985.
"Performance Assessment of Portable Infrared Incinerator" by Philip L. Daily, Shirco Infrared Systems, Inc., pp. 383-386, presented Nov. 1985.
"State-of-the-Art Remedial Action Technologies Used for the Sydney Mine Waste Disposal Site Cleanup" by Norman N. Hatch Jr., et al., Hillsborough Co. Dept of Solid Waste, Tampa, Fla., pp. 285-290, presented Nov. 1985.
"Low Temperature Thermal Stripping of Volatile Compounds" by John W. Noland et al., Roy F. Weston, Inc., West Chester, Pa., pp. 238-242, presented Mar. 1986.
"Innovative Application of Chemical Engineering Technologies for Hazardous Waste Treatment" by Robert D. Allan et al., IT Corporation, Knoxville, Tenn., pp. 98-101, presented Mar. 1986.
Portion of a confidential proposal dated Dec. 13, 1991 from Chemical Waste Management to Dept. of Energy, pp. vol. 11, 1-25.

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