PURPOSE: To inexpensively and surely purify and restore contaminated soil by injecting hydrogen peroxide into the soil contaminated with sparingly- decomposable org. matter.
CONSTITUTION: Hydrogen peroxide is injected into the soil contaminated with sparingly-decomposable org. matter such as chlorinated org. matter, phenols, etc. When hydrogen peroxide acts on the soil in the presence of catalyst such as iron ion, OH free radiacal is generated and reveals a strong oxidizing power. The org. matter in soil is oxidized and decomposed by the reaction and made completely harmless but only partially oxidized and decomposed to the extent that the org. matter is decomposed by the soil microorganism. The harmful org. matter is subsequently decomposed by the soil microorganism finally into water, carbon dioxide, etc., and the soil is completely purified and restored.
MATSUYAMA HIDEAKI
KOYAMA OSAMU
KOSHO KENTA
YOKOMAKU TOYOICHI
