한국습지학회지 (Journal of Wetlands Research)

  • 제15권3호
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  • Pages.387-396
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  • 2013
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  • 1229-6031(pISSN)
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  • 2384-0056(eISSN)
한국습지학회 (Korean Wetlands Society)
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식생수로 길이가 비점오염물질 저감효율에 미치는 영향

Effects of Grassed Swale Lengths on Reduction Efficiencies of Non-point Source Pollutants

  • 백승봉 (서울과학기술대학교 건설시스템공학과) ;
  • 길경익 (서울과학기술대학교 건설시스템디자인공학과)
  • Paek, Seoungbong (Department of Civil Engineering, Seoul National University of Science and Technology) ;
  • Gil, Kyungik (Department of Civil Engineering, Seoul National University of Science and Technology)
  • 투고 : 2013.05.30
  • 심사 : 2013.07.12
  • 발행 : 2013.08.31
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초록

비점오염원은 배출원, 유출경로 및 배출량이 명확하지 않아 관리에 많은 어려움이 있다. 최근 들어, 비점오염 관리를 위해 다양한 비점오염저감시설들에 대해 개발 및 연구 되고 있다. 또한 비점오염시설의 정확한 평가를 위해 다양한 효율산정 방법들이 제시되고 있다. 본 연구에서는 강우 시 식생수로 길이별 모니터링 결과를 토대로 식생수로의 길이가 저감효율에 미치는 영향에 대해 연구를 수행하였다. 또한 식생수로 길이별 저감효율을 다양한 방법으로 산정하여 효율 산정방법에 따른 차이를 비교하고자 하였다. 효율 산정 방법으로는 ER, SOL, ROL, ROF, SOLF, ROLF 방법을 이용하여 분석하였다. EMC 분석결과 유입 및 유출량의 농도차이가 유기물질이 염양염류에 비하여 크게 나타났다. 식생수로 길이에 따른 효율 분석 결과 식생수로 유입부에서 효율이 급증하고, 이 후에는 효율 증가가 점차 감소하는 것으로 나타났다. 이는 식생수로 전단에 설치된 저류지에 의한 것으로 판단된다. 식생수로의 저감효율을 확보하기 위해서는 식생수로의 길이가 최소 30m이상으로 충분히 확보되어야 한다. 또한 식생수로의 경제적이고 효율적인 설계를 위해선 단순한 효율분석이 아닌 식생수로 최소 길이에 대한 연구가 필요하다.

Non-point pollution source is difficult to control due to uncertain outflow path and emission. So, There are many development and research to Best Management Practices(BMP) established to manage the Non-point pollution source. Besides, various methods of estimated efficiency to exact assessment of BMP is presented. In this study, the impact about length of Grassed Swale on reduction efficiency based on monitoring results of Grassed Swale by length is studied. By estimating Grassed Swale reduction efficiency in a variety of methods, the difference between the methods of estimated efficiency was compared with those that. Estimated efficiency method using ER, SOL, ROL, ROF, SOLF, and ROLF methods is analyzed. EMC analysis result is high inflow and outflow concentration distinction organic compound for nutritive salts The result of efficiency analysis along Grassed Swale length sharply increases in a Grassed Swale inlet. After this increase, the efficiency gradually decreases. This is expected that cistern installed in the end of the front. To obtain a stable reduction efficiency of Grassed Swale, minimum length 30m of Grassed Swale should be enough. Also, in order to efficiently and economically design Grassed Swale, the researches on length of Grassed Swale are needed rather than simple analysis of efficiency.

키워드

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피인용 문헌

  1. Performance Evaluation of Soil Media for Water Quality Purification at LID Application vol.56, pp.6, 2014, https://doi.org/10.5389/KSAE.2014.56.6.085
  2. Recent Progress in Low-Impact Development in South Korea: Water-Management Policies, Challenges and Opportunities vol.10, pp.4, 2018, https://doi.org/10.3390/w10040435