发明名称 |
Apparatus and method for phosphate-accelerated bioremediation |
摘要 |
An apparatus and method for supplying a vapor-phase nutrient to contaminated soil for in situ bioremediation. The apparatus includes a housing adapted for containing a quantity of the liquid nutrient, a conduit in communication with the interior of the housing, means for causing a gas to flow through the conduit, and means for contacting the gas with the liquid so that a portion thereof evaporates and mixes with the gas. The mixture of gas and nutrient vapor is delivered to the contaminated site via a system of injection and extraction wells configured to the site and provides for the use of a passive delivery system. The mixture has a partial pressure of vaporized nutrient that is no greater than the vapor pressure of the liquid. If desired, the nutrient and/or the gas may be heated to increase the vapor pressure and the nutrient concentration of the mixture. Preferably, the nutrient is a volatile, substantially nontoxic and nonflammable organic phosphate that is a liquid at environmental temperatures, such as triethyl phosphate or tributyl phosphate./!
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申请公布号 |
US5753109(A) |
申请公布日期 |
1998.05.19 |
申请号 |
US19950579910 |
申请日期 |
1995.12.28 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY |
发明人 |
LOONEY, BRIAN B.;PFIFFNER, SUSAN M.;PHELPS, TOMMY J.;LOMBARD, KENNETH H.;HAZEN, TERRY C.;BORTHEN, JAMES W. |
分类号 |
B09C1/10;(IPC1-7):C02F3/34;E21B43/22 |
主分类号 |
B09C1/10 |
代理机构 |
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代理人 |
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主权项 |
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