Determination of CSOs Treatment Capacity considering the Pollution Load

Abstract Many researches has been conducted as extreme rainfall in hydrology and extreme rainfall analysis is not proper for determination of CSOs treatment capacity. In this study, runoff is calculated by tranformation from rainfall to runoff according to Interevent Time Definition. The capacity of sewage treatment plant is designed by 3 times of DWF(Dry Weather Flow) and the efficiency of present sewage treatment plant is very low becauseat at present. Also, The sewage treatment plant can not control CSOs. In this research, the pollution load is calculated by EMC(Event Mean Concentration) and pollution concetration of total runoff is a standard deciding suitablility of present sewage treatment plant. Finally, CSOs treatment capacity is determinated considering pollution load.Key Words : Combined Sewer Overflows, Non-point Source Pollution, Event Mean Concentration 본연구는국토교통부물관리연구사업의연구비지원(13AWMP-B066744-01)에의해수행되었습니다. * Corresponding Author : Lee, Eui Hoon(Korea Univ.) Tel: +82-2-3290-4724 email: hydrohydro@naver.comReceived April 18, 2014 Revised (1st May 2, 2014, 2nd May 7, 2014) Accepted May 8, 2014