| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a non-destructive geological pollution purification method by which the purification is carried out without destroying a purified site and a pressure bulkhead used for the same. <P>SOLUTION: After a tightly closed space 6 is formed by partitioning on the ground surface 5 of a geological layer 1 to be purified, air is in the tightly closed space 6 is sucked to make the pressure inside the tightly closed space 6 negative to suck a volatile organic compound contained in the geological layer 1 into the tightly closed space 6 and the sucked volatile organic compound is sucked and discharged to the outside by a suction apparatus 7. The tightly closed space 6 is formed by installing the pressure bulkhead 3 having an opening part 4 so that the opening part 4 faces the ground surface 5. <P>COPYRIGHT: (C)2003,JPO</p> |
