Method for recovering contaminants from soil utilizing electrica

Details Method for recovering contaminants from soil utilizing electrica Method for recovering contaminants from soil utilizing electrica

1995-06-02

1997-08-12

McMahon, Timothy

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

422 22, E02D 3100

Patent

active

056562390

ABSTRACT:
An in-situ method is disclosed for low pressure vaporization and recovery of contaminants from surface and near-surface soil by electrically heating the soil with a pattern of hollow electrodes and pulling a deep vacuum through the electrodes. The surface of the soil is sealed with an impermeable barrier supported by the soil. The contaminants are removed by vacuum distillation in the presence of water vapor at a temperature well below the normal boiling point of the contaminants.

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Betsy Carpenter, "Superfund, superflop --The progress on hazardous waste: Only $300 billion to go", U.S. News & World Report, Feb. 6, 1989.

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