ORIGINAL POSITION-REPLACING METHOD FOR POLLUTED SOIL

摘要

PROBLEM TO BE SOLVED: To keep an execution part clean over a long period of time by preventing the repollution of replaced unpolluted soil in an original position-replacing method for polluted soil for replacing polluted soil with unpolluted soil by cutting the polluted soil by water jets to inject the unpolluted soil in the cavities formed by cutting. SOLUTION: The polluted soil is replaced with the unpolluted soil 5 containing a cleaning agent 5A. Since the cleaning agent 5A is injected in cavities 1-4 along with the unpoluted soil, the pollutant X present in the residual polluted soil or in its periphery is decomposed by the cleaning agent 5A even in a case that it is diffused to the unpoluted soil after cleaning treatment and the soil of the cleaned region can be kept over a long period of time. COPYRIGHT: (C)2007,JPO&INPIT