Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characterization of Runoff Properties of Non-point Pollutant at a Small Rural Area considering Landuse Types

토지이용 특성을 고려한 소규모 농촌유역의 비점오염물질 유출특성 해석

  • Bae, Sang-ho (Division of Construction Environment Engineering, University of Science & Technology) ;
  • Kim, Weon-jae (Construction Environment Research Division, korea Institute of Construction Technology) ;
  • Yoon, Young H. (Construction Environment Research Division, korea Institute of Construction Technology) ;
  • Lim, Hyun-man (Construction Environment Research Division, korea Institute of Construction Technology) ;
  • Kim, Eun-ju (Construction Environment Research Division, korea Institute of Construction Technology) ;
  • Park, Jae-roh (Construction Environment Research Division, korea Institute of Construction Technology)
  • 배상호 (과학기술연합대학원대학교 건설환경공학과) ;
  • 김원재 (한국건설기술연구원 건설환경연구실) ;
  • 윤영한 (한국건설기술연구원 건설환경연구실) ;
  • 임현만 (한국건설기술연구원 건설환경연구실) ;
  • 김은주 (한국건설기술연구원 건설환경연구실) ;
  • 박재로 (한국건설기술연구원 건설환경연구실)
  • Received : 2010.04.13
  • Accepted : 2010.06.01
  • Published : 2010.07.30
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Abstract

Attention has increasingly focused on the pollutant load discharged from rural area since the enforcement of total maximum daily loads (TMDLs) in korea. As one of the methods to control the inflow of pollutant load during wet weather events, local governments are attempting to apply non-point source control facility. To design those facilities appropriately, it is essential to understand the runoff characteristics of pollutants such as TSS, $BOD_5$, $COD_{Cr}$, TP and TN. In the paper, the quantitative analyses for pollutant runoff characteristics were examined in a small rural watershed with the area of about 53 hectares. For a dry weather day and wet weather events, variation patterns of dry weather flow and runoff characteristics of wet weather flows were monitored and investigated. The runoff model using XP-SWMM reflecting the landuse types of the watershed in detail was simulated to perform the sensitivity analyses for several factors influencing on their hydrograph and pollutographs. As a result, for the case of medium and small rainfall events (i. e. total rainfall of 35.8 and 17.5 mm), the impervious area including green house, roof and road which covers relatively low portion of total area (i. e. 16%) caused substantial first flush and the majority of total runoff load. Therefore, it has been concluded that the runoff characteristics of each pollutant and distribution of impervious area should be considered for the establishment of the control strategy of non-point pollutant runoff at a rural area.

Keywords

References

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