DETOXIFICATION METHOD OF PAHS-POLLUTED SOIL

摘要

A remediating method of soils contaminated with PAHs(Poly Aromatic Hydrocarbons) is provided to remediate the contaminated soils or sediments within a short time while less affecting the environment by adding an oxidizer to contaminated soils or sediments containing the PAHs and projecting ultrasonic waves onto the contaminated soils or sediments. A remediating method of soils contaminated with poly aromatic hydrocarbons comprises: a first step of adding 100 mM to 1 M of an oxidizer to 50 to 500 g of soils contaminated with poly aromatic hydrocarbons; a second step of adding 150 mg to 1 g of a metal oxide as a catalyst to the oxidizer added contaminated soils; a third step of agitating the oxidizer and the metal oxide added contaminated soils; and a fourth step of irradiating ultrasonic waves onto the agitation-completed soils for at least one hour. The oxidizer is hydrogen peroxide. The metal oxide includes CuO, Al2O3, and ZnO. The contaminated soils are particularly marine sediments.