SOIL CLEANING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for effectively and rapidly making a pollutant in soil nonpoisonous without necessitating to inject an aqueous cleaning agent into polluted soil such as a hardly-permeable layer. SOLUTION: The soil cleaning method is characterized by injecting an iron particulate slurry into a permeable layer existing under the hardly-permeable layer of soil polluted by an organic chlorine compound and penetrating a hydrogen gas generated from the iron particulate slurry into the hardly-permeable layer.