Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Effectiveness of Settling Treatment System to Reduce Urban Nonpoint Source Pollutant Load by First Flush

초기 강우에 의한 도시 유역 비점오염 부하의 유입 저감을 위한 침강 처리 시설 적용 타당성 분석

  • Kim, Jaeyoung (Department of Environmental Engineering, Chungnam National University) ;
  • Seo, Dongil (Department of Environmental Engineering, Chungnam National University) ;
  • Lee, Tongeun (Department of Environmental Engineering, Chungnam National University)
  • Received : 2016.12.13
  • Accepted : 2017.03.03
  • Published : 2017.03.31
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Abstract

The effectiveness of the first flush treatment system using settling process was evaluated to reduce urban nonpoint source pollutant loads to surface water during storm events. A pilot scale system was constructed and tested in the field and surface runoff samples were collected automatically according to pre-defined conditions. Nine rainfall events were tested and average removal efficiencies of TSS (Total Suspended Solid), TP (Total Phosphorus) and TN (Total Nitrogen) were evaluated as 87.4%, 75.3%, and 43.6%, respectively. Concentration and removal efficiency of pollutants were found to be affected by an amount of rainfall and rainfall intensities of the respective events. This seemed to be caused by the greater particulate fractions of first flushed samples than the samples collected in later time periods during the same rainfall events. The study showed that it is possible to remove a significant portion of the nonpoint source pollutant loads in initial rainfall runoff by using a simple settling process for TSS and TP without requiring additional power or chemicals.

강우 초기 표면 유출에 의해 지표수로 전달되는 비점오염물질을 저감하기 위하여 고안된 초기우수처리 장치의 효율을 분석하였다. 장치는 파일럿 규모로서 실험실 수준의 분석 결과에 근거하여 설계되었다. 강우시 사전에 설정된 조건들에 따라 실험 장치로 채수를 실시하였으며, 24시간 동안 정치하여 침강에 의해 오염물질을 제거한 상등수의 수질을 측정하여 효과를 분석하였다. 총 9번의 강우에 대하여 평균적인 제거 효율은 총고형물질(Total Suspended Solid, TSS), 총인(Total Phosphorus, TP) 그리고 총질소(Total Nitrogen, TN)에 대하여 각각 87.4%, 75.3% 및 43.6%로 나타났다. 초기 강우 유출수 오염물질의 농도는 강우량과 강우강도가 증가함에 따라 증가되는 것으로 분석되었다. 이는 강우 초기 각 오염물질의 고형물질의 분율이 더 크기 때문인 것으로 판단된다. 본 연구에서는 초기 강우시 발생하는 유출수에 의한 오염부하의 상당부분을 단순한 침강만으로 효과적으로 제거할 수 있다는 것을 검증하고자 하였으며, 특히 추가의 동력이나 화학물질의 투입 없이도 고형물질 분율이 높은 TSS와 TP의 제거 효율이 우수한 것으로 나타났다.

Keywords

References

  1. Brusseau, M. L., McColl, C. M., Famisan, G. and Artiola, J. F., "Chemical Contaminants," Chapter 10, Environmental and Pollution Science, 2nd ed., I. L. Pepper, C. P. Gerba and M. L. Brusseau, eds., Elsevier Inc., Burlington, MA, pp. 132-143(2006).
  2. Ministry of Environment Korea, "Sewerage Statistics," www.hasudoinfo.or.kr, (2014).
  3. Collaboration Team of Relevant Government Ministries of Korea, "Master Plan of Non-point Source Pollution Management, The Second Phase (2012-2020)," (2012).
  4. Deletic, A. B. and Mahsimivic, C. T., "Evaluation of water quality factors in storm runoff from paved area," J. Water Environ. Eng., 214(9), 869-879(1998).
  5. Seo, D., "Necessity of Small Stream Management for River Management of Korea," Magazine Korean Water Resour. Assoc., 42(5), 18-22(2009).
  6. Candela, A., Freni, G., Mannina, G. and Viviani, G., "Quantification of diffuse and concentrated pollutant loads at the watershed-scale: an Italian case study," Water Sci. Technol., 59(11), 2125-2135(2009). https://doi.org/10.2166/wst.2009.882
  7. Wang, J. L. and Yang, Y. S., "An approach to catchment-scale groundwater nitrate risk assessment from diffuse agricultural sources: a case study in the Upper Bann, Northern Ireland," Hydrol. Proc., 22(21), 4274-4286(2008). https://doi.org/10.1002/hyp.7036
  8. Yang, Y. S. and Wang, L., "A review of modelling tools for implementation of the EU Water Framework Directive in handling diffuse water pollution," Water Resour. Manage., 24(9), 1819-1843(2010). https://doi.org/10.1007/s11269-009-9526-y
  9. USEPA, "National management measure to control nonpoint source pollution from forestry," EPA-841-B-05-001, EPA, Office of Water, Washington, DC, (2005).
  10. Lee, J. H., Jung, Y. H. and Bang, K. W., "Performance Evaluation of Vortex Screen for Treatment of Fine Particles in Storm Runoff," J. Korean Soc. Environ. Eng., 31(4), 256-262 (2009).
  11. Jung, Y. J., Lee, E. J., Lee, S. Y., Lim, K. H. and Kim, L. H., "Determination of Detention Basin Size for NPS Control in TMDL Area," J. Korean Wetlands Soc., 9(2), 1-8(2007).
  12. Kang, H. K. and Baek, S. J., "The Research Study on Each Type Vegetation of Natural-type Reduction Equipment of the Non-point Pollutants Control Facility," J. Korean Soc. Environ. Ecol., 2013(1), 99-100(2013).
  13. Kang, T. U. and Lee, S. J., "A Simulation Method for Reduction Facilities of Natural Type for Non-point Pollution by the SWMM," J. Korean Soc. Hazard. Mitigation, 16(2), 123-131(2016). https://doi.org/10.9798/KOSHAM.2016.16.2.123
  14. Ministry of Environment of Korea, "Installation and Operation Manual of Nonpoint Pollution Reduction Facility," Research Reports(2014).
  15. Southeast Michigan Council of Governments (SEMCOG), "Low impact development manual for Michigan: A design guide for implementors and reviewers," http://library.semcog.org/InmagicGenie/DocumentFolder/LIDManualWeb.pdf, (2010).
  16. Seo, D. and Kim, J. Y., "Reduction of Pollutant Concentrations in Urban Stormwater Runoff by Settling," J. Korean Soc. Environ. Eng., 38(4), 210-218(2016). https://doi.org/10.4491/KSEE.2016.38.4.210
  17. Seo, D., Koo, Y., Kim, J., Kim, B., Park, J. and Lee, E., "Design Technique of First Flush Treatment System Using Waterside Land," Korea Water Resources Association Conference, Daejeon, Korea (2015).
  18. Seo, D., Kim J. Y. and Lee, D., "Development of Treatment System of First Flush Effect for Urban Area using Underground Settling and Filtration System," IWA World Water Congress & Exhibition 2016, Brisbane, Australia, (2016).
  19. Seo, D., Kim, J. Y., Koo, Y. M. and Lee, D., "Removal of Suspended Solid and Associated Contaminants from Urban First Flush Runoff during Rainfall Events by Settling," IWA Specialist Conference-Particle Separation, Oslo, Norway, (2016).
  20. Koo, Y. M., Kim, J. Y., Kim, B. R. and Seo, D., "Development of Suspended Solid Removal Method from Stormwater Runoff Using Fabric Filter System," J. Korean Soc. Environ. Eng., 37(3), 165-174(2015). https://doi.org/10.4491/KSEE.2015.37.3.165
  21. Yin, Z., Lee, E. H., Koo, Y. M. and Seo, D., "Development of integrated management system of stormwater retention and treatment in waterside land for urban stream environment," J. Korean Soc. Environ. Eng., 37(2), 126-135(2015). https://doi.org/10.4491/KSEE.2015.37.2.126
  22. Seo, D. and Fang, T. H., "Application of Automatic Stormwater Monitoring System and SWMM Model for Estimation of Urban Pollutant Loading During Storm Events," J. Korean Soc. Environ. Eng., 34(6), 373-381(2012). https://doi.org/10.4491/KSEE.2012.34.6.373
  23. Han, Y. H. and Seo, D., "Application of LID Methods for Sustainable Management of Small Urban Stream Using SWMM," J. Korean Soc. Environ. Eng., 36(10), 691-697(2014). https://doi.org/10.4491/KSEE.2014.36.10.691
  24. Seo, D., Koo, Y. M., Kim, J. Y., Lee, D. and Lee, E. H., "Development of Integrated Management System (ISTORMS) for Efficient Operation of First Flush Treatment System for Urban Rivers," IWA World Water Congress & Exhibition 2016, Brisbane, Australia, (2016).
  25. Kim, L., Ko, S., Lee, B. and Kim, S., "Estimation of Pollutant EMCs and Loadings in Highway Runoff," J. Korean Soc. Civil. Eng., 26(2B), 225-231(2006).
  26. Hathaway, J. M., Tucker, R. S., Spooner, J. M. and Hunt, W. F., "A Traditional Analysis of the First Flush Effect for Nutrients in Stormwater Runoff from Two Small Urban Catchments," Water Air Soil Pollut., 223, 5903-5915(2012). https://doi.org/10.1007/s11270-012-1327-x
  27. Mercado, J. M., Gernimo, F. K., Choi., J., Song, Y. and Kim, L., "Characteristics of stormwater runoff from urbanized areas," J. Wetlands Res., 14(2), 159-168(2012). https://doi.org/10.17663/JWR.2012.14.2.159
  28. Rhee, H., Y., C, G., Lee, S., Choi, J. and Son, Y., "Analysis of Nonpoint Source Pollution Runoff from Urban Land Uses in South Korea," Environ. Eng. Res., 17(1), 47-56(2012). https://doi.org/10.4491/eer.2012.17.1.047
  29. Park, I., Kim, H., Chae, S. and Ha, S., "Probability mass first flush evaluation for combined sewer discharges," J. Environ. Sci., 22(6), 915-922(2010). https://doi.org/10.1016/S1001-0742(09)60198-4
  30. Bertrand-Krajewski, J.-L., Chebbo G. and Saget A., "Distribution of pollutant mass vs volume in stormwater discharge and the first flush phenomenon," Water Res., 32(8), 2341-2356(1998). https://doi.org/10.1016/S0043-1354(97)00420-X
  31. Deletic, A., "The first flush of urban surface runoff," Water Res., 32(8), 2462-2470(1998). https://doi.org/10.1016/S0043-1354(97)00470-3
  32. Cho, J. and Seo, H., "An Analysis on the First Flush Phenomenon by Stormwater Runoff in Eutrophic Lake Watershed," J. Environ. Impact Assessment, 16(5), 341-350(2007).

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