| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for purifying contaminated ground which can purify the ground by removing necessary minimum contaminated soil and contaminants. <P>SOLUTION: In the method for purifying the contaminated ground 1 which purifies the contaminated soil, the ground 1 containing the contaminants is agitated by high pressure water 21. A suspension region in the shape of an underground test tube or an underground flask is formed in situ. By forming an ascending water flow 23 by supplying low pressure water 22 continuously or intermittently from below the suspension region as required, after a suspension state 3 is maintained over a prescribed length of time, the supply of the low pressure water 22 is stopped to precipitate soil particles. Soil granules 31 precipitated in an upper part are removed. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
