Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Determination of First Flush Criteria in Highway Stormwater Runoff using Dynamic EMCs

동적 EMC를 이용한 고속도로 초기우수 처리 기준 산정

  • Kim, Lee-Hyung (Dept. of Civil & Environ. Engineering, Kongju National University) ;
  • Lee, Eun-Ju (Dept. of Civil & Environ. Engineering, Kongju National University) ;
  • Ko, Seok-Oh (Dept. of Civil & Environ. Engineering, Kyunghee University) ;
  • Kim, Sung-Gil (Dept. of Civil & Environ. Engineering, Kongju National University) ;
  • Lee, Byung-Sik (Dept. of Civil & Environ. Engineering, Kongju National University) ;
  • Lee, Joo-Kwang (Environ. & Material Res. Lab., Highway & Transportation Technology Institute) ;
  • Kang, Hee-Man (Environ. & Material Res. Lab., Highway & Transportation Technology Institute)
  • 김이형 (공주대학교 건설환경공학부) ;
  • 이은주 (공주대학교 건설환경공학부) ;
  • 고석오 (경희대학교 토목공학과) ;
  • 김성길 (공주대학교 건설환경공학부) ;
  • 이병식 (공주대학교 건설환경공학부) ;
  • 이주광 (한국도로공사 도로교통기술원 재료환경연구그룹) ;
  • 강희만 (한국도로공사 도로교통기술원 재료환경연구그룹)
  • Received : 2005.10.19
  • Accepted : 2005.11.25
  • Published : 2006.03.30
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Abstract

The Ministry of Environment in Korea has introduced Total Pollution Load Management System (TPLMS) in major 4 large rivers to protect the water quality from possible pollutants. In order to successfully achieve the TPLMS, the nonpoint source should be controled by applying the best management practices in highly polluted areas. Of the various nonpoint sources, the highways are stormwater intensive landuses because of its high imperviousness and high pollutant mass emissions. The EMC (Event Mean Concentration) is an important parameter to correctly determine the pollutant mass loadings from nonpoint sources. However, it has wide ranges because of various reasons such as first flush phenomenon, rainfall and watershed characteristics. Even though the EMC is closely related to the first flush phenomenon, the relationship have not proven until present. Therefore, in this paper, the dynamic EMC method will be introduced to clearly make the relationship between EMC and first flush phenomenon. Also by applying the dynamic EMC method to monitored data, we found that the highly concentrated stormwater runoff was washed off within 20~50 minutes storm duration. The first flush criteria for economical treatment was also determined to 5~10 mm (mean=7.4 mm) as a cumulative rainfall.

Keywords

Acknowledgement

Supported by : 한국건설교통기술평가원

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