CLEANING MATERIAL FOR ORGANIC CHLORINE BASED COMPOUND CONTAMINATION AND CLEANING METHOD

摘要

PROBLEM TO BE SOLVED: To make cleaning of VOC contamination ground and reversal of ground strength compatible regardless of a kind of solidifying material added to a metal based reducing agent. SOLUTION: The cleaning material for the organic chlorine based compound contamination is formed by adding a cement based or a lime based solidifying material having pH of 11 or higher or a solidifying material formed by combining these to an iron particulate powder having an average particle diameter of 0.05-0.50μm andα-Fe content of 30 wt.%-90 wt.%. In the cleaning method, the organic chlorine based compound contamination ground is scavenged, the cleaning material for the organic chlorine based compound contamination is added and mixed to the scavenged soil and this is refilled again in a site or is conveyed to the outside of the site. The organic chlorine based compound contamination ground is not scavenged and the cleaning material for the organic chlorine based compound contamination is delivered and mixed into the organic chlorine based compound contamination ground as a powder or a slurry loaded with water. COPYRIGHT: (C)2006,JPO&NCIPI