Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characteristics of Non-point Source Pollutants Runoff from Agricultural and Industrial Areas in Lake Sihwa Watershed

강우시 시화호 농촌 및 공단유역의 비점오염물질 유출특성

  • Kim, Sea-won (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Choi, Kwangsoon (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Dong-sup (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Lee, Mikyung (Korea Institute of Water and Environment, Korea Water Resources Corporation)
  • 김세원 (한국수자원공사 K-water연구원) ;
  • 최광순 (한국수자원공사 K-water연구원) ;
  • 김동섭 (한국수자원공사 K-water연구원) ;
  • 이미경 (한국수자원공사 K-water연구원)
  • Received : 2009.07.23
  • Accepted : 2009.09.01
  • Published : 2009.09.30
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Abstract

The characteristics of stormwater runoff was examined on distinct types of agricultural and industrial area in Lake Sihwa watershed. During rainfall event, the peak concentrations of SS, $COD_{Mn}$, and TP were observed after 6~11 hours of rainfall in agricultural areas. Whereas, the peak concentrations occurred within the first one hour after rainfall and then the highest concentration of NPS pollutants sharply decreased, showing strong first flush effect in industrial areas. The strong first flush effect of suspended solid was apparent in agricultural areas, while those of organic matters and nutrients were clear in industrial areas. The cumulative load curves for NPS pollutants showed above the $45^{\circ}$ straight line, indicating that first flush effect occurred in industrial areas. The mean SS EMC values of agricultural areas ranged from 60~598 mg/L (Avg. 285 mg/L), it was higher value when compare to other areas. While the mean $COD_{Mn}$, TN, and TP EMCs values of industrial areas were shown the highest values as 67.7 mg/L, 12.1 mg/L and 2.1 mg/L respectively.

Keywords

Acknowledgement

Grant : 시화호 유역 수질오염원 전수조사

Supported by : 한국수자원공사

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