Abstract
In order to mitigate the pollution of the river water attributed to the urban wastewater discharged from the middle part of Yodo river basin, bypass channel system with river water treatment facilities was equipped at Yodo River basin. In this study, attenuation of 53 pharmaceuticals and personal care product (PPCPs) were clarified both in the Yodo river bypass channel system and the river by the field survey and these two were compared considering several scenarios for the system operation in order to evaluate the utility of the Yodo river bypass channel system. As the result, attenuation of PPCPs in the Yodo river bypass channel system was suggested to be comparable to that in the river line or smaller than that in the case of expansion of inflow and area covered by the channel, due to photolysis by sunlight and adsorption to the sediment in the river line.
