Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of the Discharge Characteristics of Non-point Pollutants from the Interception Facilities according to Rainfall Conditions

강우조건에 따른 차집시설에서의 비점오염물질 유출특성분석

  • Lin, Zi-Yu (Department of Enviromental Science and Engineering, Kyung Hee University) ;
  • Eun, Beomjin (Department of Enviromental Science and Engineering, Kyung Hee University) ;
  • Heo, Jeong Sook (Department of Enviromental Science and Engineering, Kyung Hee University) ;
  • Choi, I Song (Department of Enviromental Science and Engineering, Kyung Hee University) ;
  • Oh, Jong-Min (Department of Enviromental Science and Engineering, Kyung Hee University)
  • 임자유 (경희대학교 환경학 및 환경공학과) ;
  • 은범진 (경희대학교 환경학 및 환경공학과) ;
  • 허정숙 (경희대학교 환경학 및 환경공학과) ;
  • 최이송 (경희대학교 환경학 및 환경공학과) ;
  • 오종민 (경희대학교 환경학 및 환경공학과)
  • Received : 2021.10.25
  • Accepted : 2021.12.22
  • Published : 2022.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

This study was carried out to understand the water quality characteristics of the initial stormwater runoff and the origin of soluble pollutants according to various rainfall conditions from a non-point source reducing facility. The water sample from this study was collected among 10 collection facilities in the G-drainage area. Specifically, five of the collection points including #1, #5, #8, #9, and #10 were reported with unknown water inflow even during non-rain conditions. The leakage characteristics of non-point pollutants from the collection facilities were then able to identify accordingly. The water quality characteristics of the stormwater runoff from the collection facilities were strongly affected by the amounts of rainfalls. The average concentrations of EC, BOD, TOC, and TN during non-rain were found to be higher than their concentrations during rain; on the other hand, the average concentrations of DO were found to be lower than its concentrations during rain. In addition, the distribution of organic components existing in the effluent of collection facilities were identified based on the dissolved organic matter analysis. In summary, the stormwater runoff was highly affected by pollutants flowing from the surrounding environment, and the amounts of hard-to-decompose humic substances were greatly increased in the collection facilities due to rain.

본 연구는 비점오염원 저감시설인 차집시설을 대상으로 다양한 강우조건에 따라 초기우수 유출수의 수질특성을 파악하고, 용존성 오염물질의 기원을 파악하기 위하여 수행되었다. 본 연구는 도시지역 내 위치한 G-배수구역의 10개 차집시설 중 비강우시에도 불명수가 유입되는 것으로 조사된 차집시설 #1, #5, #8, #9 및 #10 등 5개 지점에서 수질분석을 통하여 차집시설에서 비점오염물질의 유출특성을 파악하였다. 연구결과로써 강우량에 따라 차집시설에서 우수유출수의 수질특성에 영향을 받는 것으로 판단되었다. 비강우시 EC, BOD, TOC, TN의 평균농도는 강우시에 비하여 높은 것으로 조사되었으며, DO의 평균농도는 강우시에 비하여 낮은 것으로 조사되었다. 또한, 차집시설에서 유출수의 용존성 유기물은 주로 내부에서 생성된 유기물로 구성된 것으로 판단되었다. 우수유출수는 주변 환경에서 유입되는 오염물질의 영향을 많이 받으며, 강우로 인하여 차집시설의 외부로부터 유입되는 난분해성 휴믹계 물질이 많아진 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 경기녹색환경지원센터의 연구비지원(과제번호 21-05-01-30-33-2)에 의해 수행되었습니다.

References

  1. Ministry of Environment. 2006. Water environment management plan.
  2. Ministry of Environment. 2014. Act on Water Quality and Aquatic Ecosystem Conservation.
  3. Jeon GW, Nam SY, Im YH, Jang SJ, Park HC. 2010. pH, EC and Anions Changes of Rainfall Component at the Suburban Pinus Forest in 2009. The Korean Forestry Society 2010(0): 352-353.
  4. Baker A, Inverarity R. 2004. Protein-like fluorescence intensity as a possible tool for determining river water quality. Hydrological Processes 18(15): 2927-2945. https://doi.org/10.1002/hyp.5597
  5. Brezonik PL, Stadelmann TH. 2002. Analysis and predictive models of stormwater runoff volumes, loads, and pollutant concentrations from watersheds in the Twin Cities metropolitan area, Minnesota, USA. Water Research 36(7): 1743-1757. https://doi.org/10.1016/S0043-1354(01)00375-X
  6. Chen W, Westerhoff P, Leenheer JA, Booksh K. 2003. Fluorescence Excitation-Emission Matrix Regional Integration to Quantify Spectra for Dissolved Organic Matter. Environmental Science and Technology 37(24): 5701-5710. https://doi.org/10.1021/es034354c
  7. Coble PG. 1996. Characterization ofmarine and terrestrial DOM in seawater using excitationemission matrix spectroscopy. Marine Chemistry 51(4): 325-346. https://doi.org/10.1016/0304-4203(95)00062-3
  8. Hallberg M, Renman G, Byman L, Svenstam G, Norling M. 2014. Treatment of tunnel wash water and implications for its disposal. Water Science and Technology 69(10): 2029-2035. https://doi.org/10.2166/wst.2014.113
  9. Huguet A, Vacher L, Relexans S, Saubusse S, Froidefond JM, Parlanti E. 2009. Properties of fluorescent dissolved organic matter in the Gironde Estuary. Organic Geochemistry 40(6): 706-719. https://doi.org/10.1016/j.orggeochem.2009.03.002
  10. Kim G, Yur J, Kim J. 2007. Diffuse pollution loading from urban stormwater runoff in Daejeon city, Korea. Journal of Environmental Management 85(1): 9-16. https://doi.org/10.1016/j.jenvman.2006.07.009
  11. McKnight DM, Boyer EW, Westerhoff PK, Doran PT, Kulbe T, Andersen DT. 2001. Spectrofluorometric characterization of dissolved organic matter for indication of precursor organic material and aromaticity. Limnology and Oceanography 46(1): 38-48. https://doi.org/10.4319/lo.2001.46.1.0038
  12. Ohno T, Amirbahman A, Bro R. 2008. Parallel factor analysis of excitation-emission matrix fluorescence spectra of water soluble soil organic matter as basis for the determination of conditional metal binding parameters. Environmental Science and Technology 42(1): 186-192. https://doi.org/10.1021/es071855f
  13. Stedmon CA, Markager S, Bro R. 2003. Tracing dissolved organic matter in aquatic environments using a new approach to fluorescence spectroscopy. Marine Chemistry 82(3): 239-254. https://doi.org/10.1016/S0304-4203(03)00072-0
  14. Suarez J, Puertas J. 2005. Determination of COD, BOD, and suspended solids loads during combined sewer overflow (CSO) events in some combined catchments in Spain. Ecological Engineering 24(3): 199-217. https://doi.org/10.1016/j.ecoleng.2004.11.005
  15. Zsolnay A, Baigar E, Jimenez M, Steinweg B, Saccomandi F. 1999. Differentiating with fluorescence spectroscopy the sources of dissolved organic matter in soils subjected to drying. Chemosphere 38(1: 45-50.