Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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A Study on the Improvement Plan of Gwangju-cheon Water Quality by the Inflow of Mt. Mudeung Valley Water

무등산 계곡수 유입을 통한 광주천 수질 개선 방안에 관한 연구

  • Ko, Joon-IL (Department of Environment and Energy Engineering, College of Engineering, Chonnam National University) ;
  • Chung, Seon-Yong (Department of Environment and Energy Engineering, College of Engineering, Chonnam National University)
  • 고준일 (전남대학교 공과대학 환경에너지공학과) ;
  • 정선용 (전남대학교 공과대학 환경에너지공학과)
  • Received : 2021.06.04
  • Accepted : 2021.08.17
  • Published : 2021.08.31
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Abstract

Numerous valley waters originating from Mt. Mudeung and flowing into Gwangju Cheon flowed into the confluence-type sewage conduit, the Gwangju Cheon became dry and water quality deteriorated. In this study, a method to create a stream was studied by using the valley water of Mt. Mudeung in the Gwangju cheon that flows into the sewage treatment plant as a water source. Flow and water quality surveys were investigated at four points with meaningful flow quantity. As a result, it showed a flow quantity was 105~2,721 m3/day at each point. And the average water quality was BOD5 0.3~1.6 mg/L. If a stream with a flow quantity of 1,500 m3/day is created during the dry season and then flows into the Namgwang bridge of Gwangju cheon, it is predicted that there will be improvements in BOD 7.3%, COD 6.5%, T-P 5.8%, and T-N 5.2%. In addition, it was determined that the load on the flow quantity of the sewage treatment plant due to the inflow of valley water would be reduced, the cost of sewage treatment would be reduced, and it would be the basis for BGN construction by creating waterside amenity in the city.

무등산에서 발원하여 광주천으로 유입되던 수많은 계곡수가 합류식 하수관거로 유입되면서 광주천의 건천화와 수질 악화가 심화되었다. 본 연구는 하수처리장으로 유입되는 광주천 유역의 무등산 계곡수를 수원으로 활용하여 실개천을 조성하는 방안에 대해 연구하였다. 먼저, 100 m3/일 이상의 유량을 보이는 4개 지점의 유량 및 수질 조사 결과 지점별로 105~2,721 m3/일의 유량을 나타냈으며, 평균 수질은 BOD5 0.3~1.6 mg/L로 나타났다. 만약, 갈수기 유량 1,500 m3/일의 실개천을 조성한 후 광주천 남광교 지점으로 유입시킨다면, BOD 7.3%, COD 6.5%, T-P 5.8%, T-N 5.2%의 개선 효과가 있을 것으로 예측되었다. 또한, 계곡수 유입에 의한 하수처리장 유량 부하 부담이 줄어들고, 하수처리 비용이 절감되며, 도심 속 수변 amenity 창출에 의한 Blue-Green-Network (BGN) 구축의 토대가 될 것으로 판단되었다.

Keywords

Acknowledgement

본 연구는 2019년 광주녹색환경지원센터 환경기술연구개발 사업(19-01-30-33-12) 연구비 지원으로 수행되었습니다. 지원에 감사드립니다.

References

  1. Choi, HG, Kim, DI, Na, CH, Han, KY (2012). Assessment of EFDC model for water quality analysis in Nakdong River, J. of Korea Water Resources Assocition, 45(7), pp. 685-696. [Korean Literature] [DOI : https://doi.org/10. 3741/JKWRA.2012.45.7.685] https://doi.org/10.3741/JKWRA.2012.45.7.685
  2. Gwangju Metropolitan City (GMC). (2018). Gwangju cheon Master Plan, Gwangju Metropolitan City. [Korean Literature]
  3. Gwangju Metropolitan City (GMC). (2019). Comprehensive Plan for the Establishment of Special Measures to Improve water Quality in the Upper Reaches of the Yeongsan River, 55-6290000-000479-01, Gwangju Metropolitan City. [Korean Literature]
  4. Gwangju Metropolitan City (GMC). (2020). Gwangju Statistical Yearbook, 55-6290000-000006-10, Gwangju Metropolitan City. [Korean Literature]
  5. Kim, JS, Yoon, CG, Son, YK, Haam, JH (2010). Water quality prediction for constructed wetland using EFDC, Proceeding od 2010 Conference of the Korean Society on Water Environment, Korean Society on Water Environment, pp. 115-116. [Korean Literature]
  6. Kim, KM, Choi, JH, Kim, SH, Kang, LS, Shin, HS, Kim, SD(2019). Analysis of the effect of bio-retention cells to improve water cycle and water quality in urban streams, J. of Wetlands Research, 21(3), pp. 221-235. [Korean Literature][DOI : https://doi.org/10.17663/JWR.2019.21.3.224]
  7. Korea Meteorological Administration (KMA) (2021). https://www.kma.go.kr/.
  8. National Geographic Information Institute (NGII) (2021). http://map.ngii.go.kr/.
  9. National Institute of Environmental Research (NIER) (2017). Water Pollution Process test Standards, National Institute of Environmental Research. [Korean Literature]
  10. National Institute of Environmental Research (NIER) (2021). http://tmdlms.nier.go.kr/.
  11. Noh, HS, Jo, DH, Kim, YS, Ahn, TJ (2017). Changes and influences of stream water quantity due to urbanization: Focusing on urban streams in Gyeonggi-do, J. of Wetlands Research, 19(4), pp. 491-500. [Korean Literature][DOI : https://doi.org/10.17663/JWR.2017.19.4.491]
  12. Park, CE, Kim, JH (2006). Utilization of valley water for river maintenance discharge, Proceedings of the Korea Water Resources Association Conference, Korea Water Resources Association, pp. 1022-1026. [Korean Literature]
  13. Shin, CM, Min, JH, Park, SY, Choi, JK, Park, JH, Song. YS, Kim, KH (2017). Operational water quality forecast for the Yeongsan River using EFDC model, J. of Korean Society on Water Environment, 33(2), pp. 219-228. [Korean Literature] https://doi.org/10.15681/KSWE.2017.33.2.219
  14. Simmons, DL, and Reynolds RJ (1982). Effects of urbanization on base flow of selected south-shore streams, long island, New York. J. of the American Water Resources Association, 18(5), pp. 797-805. [DOI : https://doi.org/10.1111/j.1752-1688.1982.tb00075.x]
  15. Son, YG (2016). Analysis of nonpoint source pollutants in urban stormwater runoff, J. of Wetlands Research, 18(1), pp. 94-99. [Korean Literature][DOI : https://doi.org/10.17663/JWR.2016.18.1.094]
  16. Water Environment Information System (WEIS) (2021). http://water.nier.go.kr/.
  17. Yang, HK (2004). Drying stream and hydrological environment for Gwangjucheon, J. of The Korean Association of Regional Geographers, 10(3), pp. 568-578. [Korean Literature]