In-situ Chemical Oxidation for Volatile Organic Compounds Removal in Groundwater: A Pilot-scale Study

Abstract

Volatile organic compounds (VOCs) contamination in groundwater was a widespread environmental problem and potential threat to public health and safety in adjacent areas. A pilot study of in-situ Chemical Oxidation (ISCO) for VOCs removal was demonstrated in a retired pesticide factory, with an in-situ injection system complied with 40 injection wells system. The average concentration of benzene and 4-chlorotoluene in the plume decreased by 54.19% and 58.02% respectively, after nine rounds of injection treatment with a total of approximately 34 tons of hydrogen peroxide. The results indicate that ISCO is an effective remediation alternative of VOCs in groundwater.