| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and device of remediating contaminated soil capable of collecting contamination substance at a high yield. <P>SOLUTION: Soil particles 8, containing contamination substance and constituted of coarse soil particles having particle diameters of 0.075 mm or more and fine soil particles having particle diameters less than 0.075 mm, are subjected to grinding treatment for converting 2 to 40 mass% of the coarse soil particles to the fine soil particles. Water is added to the coarse soil particles and the fine soil particles after the grinding treatment to form soil slurry 9. The soil slurry 9 is supplied into a remediation tank (columnar separation collection machine) 4. Some of the soil particles 8 together with bubbles 10 are floated and collected by supplying air from a lower part of the remediation tank 4 toward the soil slurry 9. The residue of the fine soil particles and the coarse soil particles included in the soil particles 8 is settled in the remediation tank 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
