Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Development of the Empirical Model for Estimating the Delivered Pollutant Loads Considering Geomorphic and Hydraulic Characteristics

유역형상과 수리특성을 고려한 경험론적 유달부하식 개발

  • Park, Ji Hyoung (Han River Environment Research Center, National Institute of Environment Research) ;
  • Kong, Dong Soo (Han River Environment Research Center, National Institute of Environment Research) ;
  • Min, Kyung Sok (Department of Environmental Engineering, Kyungpook National University)
  • 박지형 (국립환경과학원 한강물환경연구소) ;
  • 공동수 (국립환경과학원 한강물환경연구소) ;
  • 민경석 (경북대학교 환경공학과)
  • Received : 2007.10.02
  • Accepted : 2007.11.08
  • Published : 2007.11.30
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Abstract

This study was conducted to develop a model equation to estimate the delivered point and nonpoint pollutant loads, which are critical factor to determine the water quality of watersheds. The model equation was developed by considering various factors such as biological removal and delivered distance of pollutants, basin shape and geomorphic runoff condition. The parameters for the model equation were estimated in 3 periods, which are October to March, April to June, and July to September. As a parameter, ${\alpha}_p$, ${\alpha}_n$, ${\beta}$, a and b for $BOD_5$-delivered pollutant loads were estimated to be 0.010~0.0155, 0.051, -0.033, 0.018~0.050 and 0.93, respectively. For T-N, ${\alpha}_p$, ${\alpha}_n$, ${\beta}$ a and b were estimated to be 0.0060~0.0140, 0.014, -0.02, 0.044~0.079 and 0.93, respectively. The same parameters for T-P were estimated to be 0.0160, 0.014, -0.0250, 0.015 and 1.21, respectively. The relationship, $E^2$ (Model efficiency), between observed and calculated delivered pollutant loads showed 0.65 for $BOD_5$, 0.81 for T-N, and 0.66 for T-P, respectively. Consequently, the model equation is effective to estimate delivered pollutant loads for TMDL.

Keywords

References

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