| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for freezing and removing polluted soil, for making block-shaped frozen soil by utilizing a freezing technique and sealing the volatilization of a harmful substance or the malodor of waste with ice to more reduce an environmental risk than before while enhancing the removal/feed-out efficiency of polluted soil. SOLUTION: This method for freezing and removing polluted soil has a cooling pipe arranging process for arranging cooling pipes in polluted soil, in which a pollutant is present, so as to make the distances between the center parts of the cooling pipes equal, a cooling process for supplying a freezing medium to the cooling pipes to form discontinuous frozen soil comprising the surface part of non-frozen soil and the remainder of frozen soil around the cooling pipes, and a frozen soil removing process for taking out the frozen part of discontinuous frozen soil to the surface of the ground. COPYRIGHT: (C)2005,JPO&NCIPI
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