Abstract
A large variety of volatile organic compounds (VOCs) as chlorinated ethylenes, chlorinated ethanes, chlorinated methanes and benzene were detected in an aquifer at an illegal dumping site. In-situ bioremediation using anaerobic degradation and reductive dechlorination was applied in this site. The aim of this study is to estimate the effect of the in-site bioremediation targeted at VOCs, especially dichloromethane (DCM) and benzene under anaerobic conditions by using numerical simulation. As a result, degradation rates of VOCs were several to several ten times larger than one's of under natural aquifer conditions. Especially the degradation rates of DCM and benzene were also several to several ten times than those of under natural aquifer conditions. This finding provides evidences that it was possible to purify DCM and benzene by anaerobic bioremediation.
