| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for purifying contaminated soil simply, effectively and cheaply in situ even the contaminated soil having a large area. SOLUTION: A technique for purifying the contaminated soil includes an excavation process for excavating a required depth from the surface of the contaminated soil based on the investigation of soil and making coarse massive excavated soil; a purification adjustment material mixing process for spraying a purification adjustment material by a required weight ratio to the amount of excavated soil, crushing fine-granularly and mixing, and making purification adjustment soil; and a sprinkling preparation process for sprinkling and penetrating the purification adjustment material including an artificial zeolite powder having an average particle size of 100μm or smaller, a specific surface area of 100 m<SP>2</SP>/g or more and a base exchange capacity (meq/100g) of 200 mg or more, and purified water mixed and dispersed in the ratio of the artificial zeolite powder to water of 5 to 15% by weight ratio over the whole surface of the purification adjustment soil, and preparing the soil. COPYRIGHT: (C)2005,JPO&NCIPI |
