| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, when decomposing and removing an organic halogenated substance using iron powder in a form of slurry in which the iron powder is dispersed in water, the decomposition performance of the iron powder degrades. SOLUTION: In a method of removing the organic halogenated substance by mixing the iron power and water if necessary with soil, waste water, or groundwater contaminated with the organic halogenated substance, by using the iron powder slurry containing an organic-layered clay structure compound, the iron powder and water, a low-viscosity and hardly settled slurry is obtained, and the decomposition activity of the iron powder is never degraded. As the organic-layered clay structure compound, smectite, montmorillonite, bentonite, and illite are desirable. It is desirable to use the iron powder slurry for removing the organic halogenated substance, having 10-1,000 mPas viscosity and≤20 mm/min sedimentation velocity of the iron powder. COPYRIGHT: (C)2010,JPO&INPIT |
