Process and apparatus for cleaning contaminated soil

Details Process and apparatus for cleaning contaminated soil Process and apparatus for cleaning contaminated soil

1989-10-04

1990-10-30

Taylor, Dennis L.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

62260, 405131, 405129, B09B 100, E02D 1914

Patent

active

049664930

ABSTRACT:
A process and apparatus are provided for cleaning contaminated earth. The contaminated soil is first frozen using freezer boxes which are placed on the surface of the ground to be frozen. A refrigerant, preferably liquid nitrogen, is then introduced into the box until the soil is frozen to a desired depth and temperature. The frozen soil containing pollutants is then removed and placed in sealed containers for optional further treatment.

REFERENCES:
patent: 620112 (1899-02-01), Elliott
patent: 2621022 (1952-12-01), Bardill
patent: 3183675 (1965-05-01), Schroeder
patent: 3220470 (1965-11-01), Balch
patent: 3726095 (1973-04-01), Ross
patent: 4525282 (1985-06-01), Bartsch et al.

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