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Development and Evaluation of Bioretention Treating Stormwater Runoff from a Parking Lot

주차장 비점오염원 관리를 위한 식생체류지 개발 및 평가

  • Yu, Gigyung (Korea Expressway Corporation Research Institute) ;
  • Choi, Jiyeon (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Hong, Jungsun (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Moon, Soyeon (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Kim, Lee Hyung (Department of Civil and Environmental Engineering, Kongju National University)
  • 유기경 (한국도로공사 도로교통연구원 환경연구실) ;
  • 최지연 (공주대학교 건설환경공학과) ;
  • 홍정선 (공주대학교 건설환경공학과) ;
  • 문소연 (공주대학교 건설환경공학과) ;
  • 김이형 (공주대학교 건설환경공학과)
  • Received : 2015.03.16
  • Accepted : 2015.07.06
  • Published : 2015.08.31

Abstract

Urbanization increases the impervious cover, which affects the discharge of stormwater runoff and non-point source pollutants to the waterbodies. In order to improve the water quality and restore the aqua-ecosystem, the Ministry of Environment (MOE), Korea MOE introduced the Low Impact Development(LID) techniques on development projects. Therefore, research was performed to develop the bioretention technology for managing the stormwater runoff from urban areas. The test-bed was established on 2013 up to evaluate the performance of pollutant and runoff reduction. A total of 11 storm events have been monitored from November 2013 to present. Even though the SA/CA (surface area of bioretention/catchment area) is approximately 2.2%, the facility shows high pollutant and runoff reduction during storm events by increasing retention and infiltration capacities. The bioretention shows a 100% total runoff reduction at 0mm < R < 10mm rainfall range and more than 90% of runoff reduction at a rainfall range of 10mm < R < 20mm. Due to runoff volume reduction, more than 90% of nonpoint source pollutant were also removed by the bioretention.

Keywords

Bioretention;Low impact development (LID);Non-point Source;Volume reduction

Acknowledgement

Supported by : 환경부

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