| 摘要 |
PROBLEM TO BE SOLVED: To provide a safety decontamination method for soil, groundwater, etc. contaminated with a chemical substance by adding an oxidizing agent while preventing elution of heavy metals contained in e.g. the soil. SOLUTION: After addition of an oxidizing agent to an object contaminated with chemical substances, a reducing agent and/or an alkali agent is added to the object. To cite an example, an oxidizing agent is added to contaminated groundwater from a device 4 for injection of an oxidizing agent, an alkali agent is added from a device 8 for injection of an alkali agent, and a reducing agent is injected from a device 6 for injection of a reducing agent. COPYRIGHT: (C)2005,JPO&NCIPI |
