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고속도로 강우유출수 처리를 위한 우드칩 충진 침투도랑의 성능평가

Evaluation of the Performance of Woodchip-filled Infiltration Trench Treating Stormwater from Highway

  • 박기수 (한서대학교 환경공학과) ;
  • 강희만 (한국도로공사 도로교통연구원) ;
  • 김영철 (한서대학교 환경공학과)
  • Park, Kisoo (Dept. of Environmental Engineering, Hanseo University) ;
  • Kang, Heeman (Expressway & Transportation Research Institute) ;
  • Kim, Youngchul (Dept. of Environmental Engineering, Hanseo University)
  • 투고 : 2016.03.14
  • 심사 : 2016.05.19
  • 발행 : 2016.05.31

초록

본 연구에서는 고속도로 강우유출수 처리목적의 우드칩 충진 침투도랑 모니터링 연구를 통하여 설계 적정성 및 성능을 평가하였다. 강우시 모니터링 자료를 바탕으로 침투도랑의 평균 저감효율을 산정한 결과 TSS 88%, COD 94%, BOD 85%, TN 80%, TP 75%이었으며 강우조건 및 설계가 다르므로 국내외 다른 연구결과와 직접적인 비교는 어렵지만 개략적으로 유사한 저감성능을 보였다. 침투도랑의 가장 중요한 설계인자인 침투속도를 산출한 결과 강우강도가 증가함 따라 침투속도도 증가하였으며 평균 침투속도는 40mm/hr, 도랑 내부의 유효 저류수심 0.8m를 기준으로 침투시간을 산출한 결과 약 0.83일로 비점오염저감시설 설치 및 관리 운영 매뉴얼(MOE, 2014)의 설치기준(이하 설치기준)을 만족하는 것으로 나타났다. 수문자료에 따르면 유입량 기준으로 설계 누적강우유출고로 산출된 WQv와 유사한 유입량을 기록한 관측자료에 따르면 전량 저류, 침투되어(유출량$${\frac{._-}{.}}$$0) 침투식 LID 시설로서의 고유한 기능적 목표를 달성하였으므로 설계 누적강우유출고 5mm는 타당하다고 판단된다. 침투도랑은 강우시 일시적으로 여과 및 저류과정에서 침수가 이루어지며 완전침투가 24시간 이내에 종료되므로 우드칩으로 부터 유기물질 등의 용출가능성은 희박하며 현장 모니터링 자료에서도 용출기미는 나타나지 않았다. 따라서 추후 침투도랑 설치기준의 개정시 국내외 연구자료를 바탕으로 여재로서 우드칩의 적용을 면밀히 검토할 필요가 있다.

In this study, design and performance of infiltration trench using woodchip as media for treating stormwater from highway were examined through field monitoring. Average reduction efficiency for TSS, COD, BOD, TN, and TP was 88%, 94%, 85%, 80%, and 75% respectively, which is similar to values reported by other studies and design manuals even though direct comparison is not possible due to different monitoring and design conditions. Mean field infiltration rate estimated by measuring the change of water depth inside the observation well was about 40mm/hr, and the time taken for complete infiltration was about 0.83days, which corresponds well with design criteria recommended by MOE guidelines in Korea. In addition, according to analysis of infiltration rate and reduction efficiency, effective rainfall depth applied for determining water quality volume(WQv), 5mm was found to be properly established as design criteria. Woodchip must be considered and included as an alternative media together with crushed rock and gravel into the design guidelines because it has more advantages in terms of weight, porosity, cost, and easiness of management than other media materials.

키워드

참고문헌

  1. American Public Health Association (APHA). (2012). Standard methods for the examination of water and wastewater, APHA, Washington, DC
  2. Chen Y, Park K and Kim Y. (2014). Particle retention in compact constructed wetlands treating highway stormwater, Water Science & Technology, 69(7), pp. 1440-1446. https://doi.org/10.2166/wst.2014.026
  3. Choi SJ and Lee DR. (2005). Indicators for evaluation of sustainable water resources development and management, J. of Korea Water Resour. Assoc., 38(9), pp. 779-790. [Korean Literature] https://doi.org/10.3741/JKWRA.2005.38.9.779
  4. Expressway & Transportation Research Institute (E&TRI) (2015). Maintenance and Monitoring Report of Stormwater BMPs, E&TRI. [Korean Literature]
  5. Eric W, Anja VL, Per J and Peter SM. (1999). Hydrologic behaviour of stormwater infiltration trenches in a central urban area during 2 3/4 years of operation. Water Science Technology, 39(2), pp. 217-224. https://doi.org/10.1016/S0273-1223(99)00026-8
  6. Han DS, Jee SH, Ko SO, Kim SM and Seo JS. (2009). Treatment of road runoff by infiltration trench facility, Proceeding of the 2009 Conference of the Korean Society of Road Engineers, Korean Society of Road Engineers, pp. 673-676. [Korean Literature]
  7. HUD's Office of Policy Development and Research (PD&R). (2003). The Practice of Low Impact Development.
  8. Jung YG and Kim SW. (2012). Characteristics of Stormwater Runoff from Urban areas with Industrial Complex, J. of Korea Wetlands Research, 14(1), pp. 131-137. [Korean Literature]
  9. Kim H. (2012). Analysis of seepage velocity on unsaturated soils using rainfall infiltration test. Master's Thesis, University of Ulsan, Ulsan, Korea. [Korean Literature]
  10. Kim YS, Park K, Kim Y. (2011). Pollutant content of the sediments in the drain channel of paved catchments in coastal areas, J. of Korea Wetlands Research, 13(3), pp. 523-534. [Korean Literature]
  11. Kim YS. (2012). Performance of Evaluation of Hydrodynamic Separator for Treating Rainfall Runoff from Bridge Using Natural Water Head, Master's Thesis, Hanseo University. [Korean Literature]
  12. Korea Meteorological Administration(KMA). (2016). http://www.kma.go.kr [Korean Literature]
  13. Kwon HG, Im TH, Na SM, Lee CS and Cheon SU. (2015). Analysis on the Characteristics of Nonpoint sources during the Precipitation in Residential Area, J. of Korea Wetlands Research, 17(4), pp. 391-401. [Korean Literature] https://doi.org/10.17663/JWR.2015.17.4.391
  14. Lee JY, Maniquiz MC, Lee SY and Kim LH. (2010). Development of infiltration system for stormwater management from paved area, J. of Korea Wetlands Research, 12(3), pp. 165-175. [Korean Literature]
  15. Lee SH, Cho HH, Lee JM and Park JH. (2008). Experimental study of runoff induced by infiltration trench, J. of Korean Society on Water Quality, 24(1), pp. 107-117. [Korean Literature]
  16. Maniquiz MC, Lee SY and Kim LH. (2010). Long-Term monitoring of infiltration trench for nonpoint source pollution control, Water air soil pollut, 212, pp. 13-26. https://doi.org/10.1007/s11270-009-0318-z
  17. Michael LD. (1991). Design of infiltration trenches using perforated pipe. Master's Thesis, University of Waterloo, Waterloo, Ontario, Canada.
  18. Ministry of Environment (MOE). (2008). Certified Analytical Methods of Water Quality. [Korean Literature]
  19. Ministry of Environment (MOE). (2014). Design and Maintenance Manual of the Stormwater BMPs. [Korean Literature]
  20. Ministry of Land, Infrastructure and Transport(MOLIT). (2015). Design and Maintenance Guidelines of the Highway Stormwater BMPs, 11-1480000-001385-01. [Korean Literature]
  21. National Institute of Environmental Research (NIER). (2014). The total Amount of Water Pollution Management Technical Guidance. [Korean Literature]
  22. Niu S, Guerra H. B, Chen Y, Park K, & Kim Y.(2013). Performance of a vertical subsurface flow (VSF) wetland treatment system using woodchips to treat livestock stormwater. Environmental Science: Processes & Impacts, 15(8), 1553-156 https://doi.org/10.1039/c3em00107e
  23. Niu S, Park K, Cheng J. and Kim Y. (2016). An investigation into the relationship between water quality volume (design storage volume) and stormwater wetland performance. Water Science and Technology, in Press.
  24. Noh SJ, Kim HJ and Cheol HJ. (2006). Evaluation of infiltration trench effects on hydrologic cycle in a urbanized watershed, Proceeding of the 2006 Conference of the Korea Water Resour. Assoc., Korea Water Resour. Assoc., pp. 715-719. [Korean Literature]
  25. Park K, Niu S and Kim Y. (2013). Reduction efficiency of the stormwater wetland from animal feeding-Lot, J. of Korea Wetlands Research, 15(1), pp. 79-90. [Korean Literature] https://doi.org/10.17663/JWR.2013.15.1.079
  26. The Connecticut Department of Environmental Protection (CDEP). (2004). Connecticut Stormwater Quality Manual
  27. Yeon JS, Jang YS, Shin HS and Kim ES. (2014). Analysis of infiltration trench facility for runoff reduction effect, J. of Korea Academia-Industrial cooperation Society, 15(9), pp. 5813-5819. [Korean Literature] https://doi.org/10.5762/KAIS.2014.15.9.5813