In-well air stripping and adsorption
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 3, 2001
Grant Date -
N/A
app pub date -
May 8, 2000
filing date -
May 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and system for removing contaminants from the phreatic zone, also known as the saturation zone, or groundwater. The technique preferably involves gas sparging while slowing down the sparging process by placing packing balls into an eductor tube. A preferred embodiment of the system is comprised of a means for supplying gas to the lower extent of a well which induces a flow of groundwater and gas bubbles up the well. The system may also contain a conduit within the well which extends below the water table. The conduit has a lower fluid-permeable section which is located below the water table and an upper fluid-permeable section which is adjacent to the water table. The system may further comprise an eductor tube contained in the conduit which extends from the top extent of the conduit to the saturation zone. Packing balls may be located between the eductor tube and the means for supplying gas to the lower extent of the well. The system may also include separating the gas bubbles from the groundwater at the top of the conduit.
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 20 Citation Count
- E21B Class
- 49.58 % this patent is cited more than
- 24 Age