Hydraulic and earth engineering – Temperature modification or control of earthen formation
Patent
1995-06-07
1997-09-16
Tsay, Frank
Hydraulic and earth engineering
Temperature modification or control of earthen formation
405128, B09B 500, E02D 3115
Patent
active
056673396
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. A liquid convection flow can be established transverse to the direction of freeze-front advancement to stabilize the solid/liquid interface at the freeze-front.
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Tsay Frank
University of Washington
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