REMEDIATION WITH OZONE OF SEDIMENTS CONTAINING ORGANIC CONTAMINANTS

摘要

Disclosed is a system for treatment of sediments (85) contaminated with organic contaminants, such as polychlorinated biphenyls (PCBs), polyaromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethane (DDT) by treating the sediments (85) with ozone to react the contaminants. The present invention is particularly effective for remediation of PCBs. In an in-situ system for remediating sediments (85) in underwater sediment beds that are contaminated with (PCBs) and other contaminants, the contaminated sediments (85) are treated with ozone in a treatment chamber (82) with an ozonator (21) conveyed over the sediment bed to mix the sediment (85) with the ozone. The ozone reacts with the PCBs to form more reactive and biodegradable products. The treated sediment (88) is then redeposited upon the sediment bed.