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Title: System for the removal of contaminant soil-gas vapors

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.
Inventors:
 [1];  [2];  [3];  [4]
  1. (Iona, ID)
  2. (Sugar City, ID)
  3. (Ammon, ID)
  4. (Idaho Falls, ID)
Issue Date:
OSTI Identifier:
871274
Assignee:
Lockheed Idaho Technologies Company (Idaho, ID) INEEL
Patent Number(s):
US 5697437
Contract Number:
AC07-76ID01570
Research Org:
EG & G IDAHO INC
Country of Publication:
United States
Language:
English
Subject:
removal; contaminant; soil-gas; vapors; extracts; contaminated; soil; subsurface; regions; changes; barometric; pressure; operate; sensitive; check; valves; control; air; entry; ground; creates; efficient; subterranean; flow; plume; causes; final; extraction; contaminants; ambient; external; energy; sources; gas vapor; contaminated soil; energy sources; surface region; ambient air; energy source; check valve; check valves; external energy; surface regions; subsurface region; barometric pressure; /166/405/