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Method and device for removing a non-aqueous phase liquid from a groundwater system

United States Patent

6,367,563
April 9, 2002
View the Complete Patent at the US Patent & Trademark Office
Savannah River National Laboratory - Visit the Technology Transfer Website
A device for removing a non-aqueous phase liquid from a groundwater system includes a generally cylindrical push-rod defining an internal recess therein. The push-rod includes first and second end portions and an external liquid collection surface. A liquid collection member is detachably connected to the push-rod at one of the first and second end portions thereof. The method of the present invention for removing a non-aqueous phase liquid from a contaminated groundwater system includes providing a lance including an external hydrophobic liquid collection surface, an internal recess, and a collection chamber at the bottom end thereof. The lance is extended into the groundwater system such that the top end thereof remains above the ground surface. The liquid is then allowed to collect on the liquid collection surface, and flow downwardly by gravity into the collection chamber to be pumped upwardly through the internal recess in the lance.
Looney; Brian B. (Aiken, SC), Rossabi; Joseph (Aiken, SC), Riha; Brian D. (Augusta, GA)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 585,539
June 2, 2000
This invention was made with Government support under contract No. DE-AC 09-89SR18035 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.