IRON POWDER FOR DECOMPOSING ORGANIC CHLORINE COMPOUND AND METHOD FOR PURIFYING SOIL, WATER AND GAS STAINED WITH THE SAME COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a method for purifying soil, water such as underground water and gas at a low cost by raising reductive decomposition rate with iron of organic chlorine compounds in the soil, the water such as underground water and the gas stained with the organic chlorine compounds of decomposability and strong staining property such as cis-1,2-dichloroethylene and to provide iron powder suitable for the purifying method.;SOLUTION: In the method for purifying the soil, the water and the gas stained with the organic chlorine compounds by bringing the organic chlorine compounds contained at least in one among the soil, the water and the gas with the iron powder to decompose the organic chlorine compounds, iron powder of high purity containing 0.1 mass% C, 0.25 mass% Si, 0.60 mass% Mn, 0.03 mass% P, 0.03 mass% S and 0.5 mass% O is used.;COPYRIGHT: (C)2002,JPO