Decontamination of polluted soils

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using direct contact steam to disinfect or sterilize

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Details

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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