Ozonation of organic chemicals generally can result in less toxic and more biodegradableproducts. It is proposed to use ozone as a potential decontaminant in caseof chemical spill in surface waters. CCHE2D chemical model, a two-dimensionaldepth-averaged and process-based chemical fate and transport model, was developedfor simulating multiple decontamination tests including two-chemical-reactionprocesses. In this study, toluene decontamination by ozone was selected as anexample. Both chemicals’ transport, fate and the reactions between these two are alltaken into consideration. The model is also used to investigate the effectiveness ofdecontamination on the water quality by comparing the simulation results of a selfdecaycase with scenarios of ozonation. The hypothetical case demonstrated themodel’s capability to represent not only the chemical fate and transport but also thedecontamination operations.
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