| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for treating contaminated soil, by which the movement of a halogenated organic compound in the contaminated soil can be promoted. SOLUTION: A halogenated organic compound decomposing agent consisting of iron-containing powder, and the like, and a coarse granular material consisting of the iron-containing powder coarser than the contaminated soil, and the like, are mixed in the contaminated soil containing the halogenated organic compound. The particle size of the coarse granular material is made larger than at least either one of 20% particle size D<SB>20</SB>of the contaminated soil and 50% particle size D<SB>50</SB>of the same. The 20% particle size D<SB>20</SB>of the soil obtained by blending the halogenated organic compound decomposing agent and the coarse granular material into the contaminated soil is made to be 50-3,000μm and the coefficient of water permeability of the obtained soil is made to be 1 x 10<SP>-3</SP>to 1 x 10<SP>0</SP>cm/sec. The coarse granular material consists of at least one of sandy soil, metal powder, an oxide, a mineral, soil and a macromolecular material. COPYRIGHT: (C)2005,JPO&NCIPI |
