| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple cleaning method of contaminated soil capable of simply and inexpensively treating the contaminated soil in situ. SOLUTION: The simple cleaning method of the contaminated soil comprises: a step of digging holes with a prescribed diameter and depth through which a cleaning water solution can penetrate at equal spacing over the whole surface of the contaminated soil; and a step of spraying the cleaning water solution over the whole surface of the contaminated soil having the holes for the cleaning water solution drilled to make the cleaning water solution penetrate through the holes, the cleaning water solution being produced by dispersion mixing of an artificial zeolite powder of 10-30 wt.% having an average particle diameter of 30μm or smaller with the specific surface area of 100 m<SP>2</SP>/g or more and a base substitution capacity (meq/100 g) of 200 mg or more and a dispersing material made from a cation surfactant of 1.0-7.0 wt.% and water of 63-89 wt.%. Thereby, the contaminated soil is cleaned by adsorption fixation or adsorption-decomposition removal of contaminants in the contaminated soil. COPYRIGHT: (C)2005,JPO&NCIPI
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