Hydraulic and earth engineering – Soil remediation – In situ contaminant removal or stabilization
Patent
1996-07-22
1998-09-29
Suchfield, George A.
Hydraulic and earth engineering
Soil remediation
In situ contaminant removal or stabilization
1662721, 166302, 166370, 210170, 210747, 210908, 405131, B09C 106, C02F 102, E21B 3602
Patent
active
058137998
ABSTRACT:
Combustion is used as a source of heat to remove polluting volatiles from contaminated groundwater and subsurface soil. A burner assembly is placed in a well, either in or out of an aquifer, to produce steam and/or hot air and/or hot water which drives off the volatile contaminants which are collected through separate wells or vents depending upon the site. The combustion product gases are vented to atmosphere. Key elements are the addition of heat as close to the depth of the contaminated region as possible, transfer of heat through the aquifer and/or ground through the flow of steam and/or hot air and/or hot water to regions affected by the contaminants, and by drawing the flow to other well sites by which the contaminants are removed by pumping and subsequent treatment. Some of the contaminants are thermally destroyed. The design of the well casing can be tailored to proportion the quantities of water and steam and hot air delivered, with steam and air pressure driving the vapors at various levels below ground. The collected vapors from the pumped wells or vents are removed by a variety of techniques.
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Petroleum Dictionar For Office, Field and Factory, Porter, Hollis P., The Gulf Publishing Company, Fourth Edition, 1948, p. 319.
Berman Charles H.
Calcote Hartwell F.
Aerochem Research Laboratories Inc.
Marn Louis E.
Suchfield George A.
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