Method and apparatus for restoring contaminated groundwater
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United States of America Patent
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Oct 14, 2014
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app pub date -
Apr 16, 2014
filing date -
Jul 5, 2013
priority date (Note) -
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Abstract
Apparatus and method are provided to restore contaminated groundwater based on in-situ periodic pumping and recharging. The apparatus includes a contaminated groundwater suction system, an in-situ restoration system, and a reinjection system. The suction system includes a suction well and a suction pipeline. The suction system is connected with the in-situ restoration system. The in-situ restoration system is connected with the reinjection system. The reinjection system includes a reinjection pipeline and a reinjection well. Prior to the in-situ restoration, a pumping test for suction well and an injection test for reinjection well are conducted. Through reinjecting the processed contaminated groundwater, this approach is capable of diluting contaminated water layer, reducing the pollutant concentration in the target aquifer, providing convenience for the subsequent processing, and cutting the cost. The timely recharging of processed groundwater can effectively prevent negative consequences caused by deficiency of the groundwater.
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