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Method and system to achieve two dimensional air sparging

  • US 5,588,490 A
  • Filed: 05/31/1995
  • Issued: 12/31/1996
  • Est. Priority Date: 05/31/1995
  • Status: Expired due to Term
First Claim
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1. A process for removing volatile contaminants in a two-dimensional configuration from a contaminated area of the earth, wherein the contaminated area of the earth has a phreatic zone, the contaminant being present in the phreatic zone, the process comprising the steps off:

  • establishing a first borehole in said earth, said first borehole terminating in said phreatic zone;

    establishing a second borehole spaced from said first borehole in said earth and which terminates in said phreatic zone;

    positioning a first conduit in said first borehole;

    positioning a second conduit in said second borehole;

    applying air under pressure to said first conduit effective to induce a flow of air from said first conduit into said phreatic zone; and

    applying a vacuum to said second conduit effective to induce a flow of air and a gas containing vapor of said contaminant present in said phreatic water out of said second conduit, wherein said air flow through said phreatic zone is substantially perpendicular to the natural flow of said phreatic water.

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