| 摘要 |
PROBLEM TO BE SOLVED: To remove pollutants in soil to be treated in which a cement-based material or a lime-based material is added and mixed by bioremediation or phytoremediation. SOLUTION: In the method for removing pollutants by using plants or microorganisms, carbonated water as an acidic substance is first added to the soil to be treated in which the cement-based material or the lime-based material is added and mixed (step 101). By adding the carbonate water to the soil to be treated, the alkali component in the soil derived from calcium hydroxide is neutralized by the carbonate water and a film of calcium carbonate is formed on the surfaces of granules or blocks of the soil to be treated. Then, after the pH environment in the soil is decreased to such a range that microorganisms are active or plants can grown, for example, about pH 8 to pH 9, by addition of the carbonate water, the soil to be treated is subjected to bioremediation or phytoremediation (step 102). COPYRIGHT: (C)2004,JPO
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