| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a stable and efficient ground water purification method which enables the propagation and activation of microorganisms living continuously for a long time by easily supplying a solid nutritive salt body, charged into ground water, at any time without replacing the salt body. <P>SOLUTION: In the ground water purification method, the solid nutritive salt body 4 mainly comprising at least one of carboxylic acid with a carbon number of≥6 and alcohol with a carbon number of≥12 is laid in an excavated hole 2 installed underground, the solid nutritive salt body 4 is supplied to the excavated hole 2 according to its decrease due to dissolution into the ground water, and decomposition of organic chlorine compounds is accelerated by activation of microorganisms in the ground water. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
