Cryogenic method and system for remediating contaminated earth

Hydraulic and earth engineering – Soil remediation – In situ contaminant removal or stabilization

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405130, 588249, B09B 500, E02D 3115

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active

053241371

ABSTRACT:
An advancing freeze front is established in a porous region adjacent to or within contaminated earth. A flow of contaminated liquid phase water migrates toward the freeze front and a concentration of impurities is established in front of the advancing freeze front. When the freeze front reaches a collection zone, at least a portion is melted and the resultant water bearing concentrated impurities is collected and removed. This process may be repetitively performed.

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