| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently removing heavy metal from heavy metal-contaminated soil while suppressing infiltration of a chemical agent solution into heavy metal-contaminated soil when washing the heavy metal-contaminated soil in situ. SOLUTION: The method for washing the heavy metal contaminated soil in situ slurries the heavy metal contaminated soil from the soil surface to a predetermined depth, that is a slurrying depth, by water injection and agitation, thereafter leaves the soil at rest, moreover pours a chemical agent or the chemical agent solution and water into the soil, and agitates and mixes the soil and the chemical agent solution present to a predetermined depth, that is a chemical agent washing depth shallower than the slurrying depth to extract the heavy metal. COPYRIGHT: (C)2011,JPO&INPIT
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