河川浄化施設における環境ホルモン類の低減効果

概要

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On-site water purification facilities have been employed to reduce suspended solid or organic pollutant concentration in river water, but their potential for removing micropollutants such as endocrine-disrupting chemicals (EDCs) has not yet been extensively investigated. Water quality tests on influent and effluent from treatment facilities using gravel contact oxidation were conducted. The removal ratios for nonylphenol and bisphenol-A exceeded 50%, with removal efficiency depending on operating conditions. Specifically, removal efficiency increased when longer hydraulic retention time (HRT) and aeration were applied. In addition to trapping a proportion of the suspended solids, adsorption and biodegradation in the facilities resulted in reducing the concentration of environmental endocrine disruptors.
社団法人　日本水環境学会の論文
2006-05-10