Decontamination of polluted soils

Details Decontamination of polluted soils Decontamination of polluted soils

1992-07-22

1995-04-11

Jones, W. Gary

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using direct contact steam to disinfect or sterilize

34135, 34136, 110236, 210774, 422 1, 422 38, A61L 200

Patent

active

054055792

ABSTRACT:
For the thermal treatment of contaminated soils, excavated soil is heated by indirect heat exchange up to 650.degree. C. in a rotary drum in the absence of oxygen. Pollutants are separated from the soil by a desorption medium. Moisture in the soil vaporized to steam can serve as the desorption medium. The resultant gaseous pollutant stream is condensed, and the pollutants are separated.

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