The boring doing the contamination soil sample which becomes optimization manner of contamination soil restoration

摘要

PPROBLEM TO BE SOLVED: To provide a method for optimizing how to decontaminate contaminated soil, in which a suitable condition can easily be decided with high precision when a liquid chemical is injected into contaminated soil at a site to decontaminate the contaminated soil while dispensing with the excavation/movement of the contaminated soil. PSOLUTION: The method for optimizing how to decontaminate the contaminated soil comprises: a sample collecting steps of digging the contaminated soil and collecting a sample of the contaminated soil to be decontaminated; an infiltration rate measuring step of packing the collected contaminated soil in a vessel having an injection port and a discharge port of the liquid chemical, injecting the liquid chemical to be used for decontamination in the predetermined pressure from the injection port and measuring a time and a flow rate to be taken since the liquid chemical is injected from the injection port until the injected liquid chemical is discharged from the discharge port to obtain the infiltration rate of the liquid chemical; and an optimization step of deciding at least one of what kind of the liquid chemical is used, how much of the liquid chemical is used and what pressure is applied to the liquid chemical on the basis of the obtained infiltration rate of the liquid chemical. PCOPYRIGHT: (C)2007,JPO&INPIT