System for the removal of contaminant soil-gas vapors

Details System for the removal of contaminant soil-gas vapors System for the removal of contaminant soil-gas vapors

1995-12-07

1997-12-16

Suchfield, George A.

Wells

Plural wells

166268, 166325, 166370, 405128, B09C 100, E21B 3402, E21B 4318

Patent

active

056974370

ABSTRACT:
A system extracts contaminated vapors from soil or other subsurface regions by using changes in barometric pressure to operate sensitive check valves that control air entry and removal from wells in the ground. The system creates an efficient subterranean flow of air through a contaminated soil plume and causes final extraction of the contaminants from the soil to ambient air above ground without any external energy sources.

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patent: 5288169 (1994-02-01), Neeper
patent: 5445474 (1995-08-01), Lundegard et al.
patent: 5553974 (1996-09-01), Nazarian
Foor, Dean C., Passive Bioventing Driven by Natural Air Exchange, Proceedings of the Petroleum Hydrocarbons and Organic Chemicals in Ground Water, Houston, Texas, Nov. 15-17, 1993, pp. 305-309.

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