Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Analysis of Non-point Pollution Source Removal Efficiencies according to Rainfall Characteristics in Low Impact Development Facilities with Vegetation

식생이 적용된 비점오염 저감시설의 강우 특성에 따른 효율 분석

  • Ku, Soo-Hwan (Daelim Industrial) ;
  • Im, Jiyeol (Department of Civil Engineering, Seoul National University of Science and Technology) ;
  • Oa, Seong-Wook (Department of Railroad Civil system Engineering, Woosong University) ;
  • Gil, Kyungik (Department of Civil Engineering, Seoul National University of Science and Technology)
  • 구수환 (대림산업) ;
  • 임지열 (서울과학기술대학교 건설시스템공학과) ;
  • 어성욱 (우송대학교 철도건설시스템학부) ;
  • 길경익 (서울과학기술대학교 건설시스템공학과)
  • Received : 2016.10.24
  • Accepted : 2016.12.15
  • Published : 2017.05.30
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Abstract

This research was conducted to analyze removal efficiencies of non-point pollution source (NPS) in low impact development (LID) facilities with vegetation. In this research, removal efficiencies of NPS were calculated using rainfall monitoring data for 5 years in grassed swale (GS) and vegetative filter strip (VFS). TSS was greater than other pollutants, and it ranged 11.9 ~ 351.7 mg/L in GS and 12.8 ~ 350.7 mg/L in VFS. Outflow EMCs were reduced than inflow EMCs, overall removal efficiencies of NPS were 67 ~ 86% in GS and 63 ~ 91% in VFS. 50 % reduction efficiency of rainfall runoff was observed between inflow and outflow in each LID facility. TSS removal efficiency in GS and VFS was correlated with rainfall characteristics. The rainfall for TSS removal efficiency over 50% was determined about 31 mm, 34 mm and average rainfall intensity was 3.0 mm/hr, 3.9 mm/hr in GS and VFS. Therefore, GS and VFS were regarded effective LID facilities as removal of pollutants and rainfall runoff. Also, this research result can be used as an important data for management of NPS.

Keywords

References

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