发明名称 |
METHOD OF PURIFYING CONTAMINATED SOIL USING MICROORGANISM |
摘要 |
<p>Contaminants are efficiently purified without affecting the environment or necessitating the performance of any post-treatments such as pH adjustment that would be used to prevent environmental impact, even when the contaminated soil is highly viscous. <??>In the method of purifying contaminated soil by microorganisms according to the present invention, contaminated soil mainly comprising clay or silt and containing trichloroethylene as a contaminant is dug out, and then temporarily placed on the ground (step 101). Next, perlite 2, which is an inorganic soil-improving material, the soil-improving material, and degradation microbes 3 degrading trichloroethylene are added to the contaminated soil 1 (step 102). The contaminated soil is subsequently mixed by agitation, so as to cause the perlite 2 to absorb pore water contained in the clay or silt (step 103). Next, aeration is performed to inject air into the contaminated soil 1, thereby microbially degrading trichloroethylene (step 104). <IMAGE></p> |
申请公布号 |
EP1473093(A1) |
申请公布日期 |
2004.11.03 |
申请号 |
EP20020788822 |
申请日期 |
2002.12.13 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
FUJII, KENSUKE;IDE, KAZUKI;ISHIKAWA, YOJI;ODA, YASUSHI;HAMAZAKI, MOTOKI |
分类号 |
C12N1/20;B09C1/10;C09K17/02;C09K101/00;(IPC1-7):B09C1/10 |
主分类号 |
C12N1/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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