하천유지유량 증대에 따른 수질개선 효과 분석 = Analysis of Water Quality Improvement by Instream Flow Increasing

다국어 초록 (Multilingual Abstract)

In this study, we seek for solution to improve water quality on Yeongsan River upper watershed, which is one of the most polluted areas on korea. The study composed of diverse scenario of instream flow increase. And analysed in improving water quality using water quality model. Water quality model is QUALKO model. The following water quality indicators have been simulated BOD and T-P. Model conditions were set using new standard flow and hydraulic coefficients, while observed data from 2012 were used to calibrate and that from 2012 to validate the model respectively. Scenarios were analyzed, as follows : 1) application method of 1.19 CMS remaining flow by heightening upstream dam 2) application method of 0.96 CMS flow by private dam of environmental water 3) application method of 1.16 CMS remaining flow by Juam lake in Seomjin River watershed 4) application method of 0.29 CMS remaining flow by Whangyong River watershed 5) the whole of method. Scenarios were analyzed, as follows would decrease by 10.7 ~ 50.4% in BOD and 13.4% ~ 63.2% in T-P respectively when all the scenarios were applied together. Consequently, water qualities of the unit watersheds have been improved in total scenarios.

참고문헌 (Reference)

1 박진환, "유량-부하량관계식을 이용한 지석천 유역의 부하지속곡선 적용 및 유황별 유달율 산정" 한국물환경학회 29 (29): 523-530, 2013

2 김경훈, "남강댐 하류유역 수질개선 필요유량 산정에 관한 연구" 한국물환경학회 30 (30): 44-59, 2014

3 정환도, "금강수계 생활계 인구의 수질오염총량제 적용방안" 한국환경기술학회 14 (14): 432-440, 2013

4 Lee, Kwanwoo, "Study on the reduction assessment of pollutant loads by KID technique for Total Maximum Loads Management with GIS based watershed scale modelling" The University of Seoul Supervised 2014

5 Ryu, Kyungku, "Study for necessary flow for water quality preservation in the multiweirs influence range of Young-san river basin" Graduate school of Chonnam National University 2014

6 Min Fan, "Simulation of watershed hydrology and stream water quality under land use and climate change scenarios in Teshio River Watershed, northern Japan" 50 : 79-89, 2014

7 Zhang, B, "SD-GIS-based temporalspatial simulation of water quality in sudden water pollution accidents" 37 (37): 2011

8 Andrea Momblanch, "Managing water quality under drought conditions in the Llobregat River Basin" 503 : 300-318, 2014

9 Kang, Seongkyu, "Improvement of instream flow evaluation methodology in Korea" Graduate School Korea University 2012

10 박인혁, "HyGIS와 Qual2E의 연계 시스템 개발" 한국지리정보학회 14 (14): 96-108, 2011

11 Oh, Jinho, "Estimation of design discharge for close-to-nature river restoration" Seoul National University 2012

12 Y.C. Lai, "Development of a water quality modeling system for river pollution index and suspended solid loading evaluation" 478 : 89-101, 2013

13 Jeong, Ho, "Decision of stream flow of Wum-jin River for water-purity utilizing QUAL2K model" Graduate school of Dongshin University 2011

14 Yi Wang, "Assessment of surface water quality via multivariate statistical techniques" 7 : 30-40, 2013

15 Shin, Yuri, "Application of BASINS/WinHSPF and risk assessment for water quality management in Gyeong-an watershed" Graduate School of Konkuk University 2011

16 Yun-gyu Chang, "A study for the calculation of instream flow in the rehabilitation of urban stream" 6 (6): 56-61, 2005

17 Yeongsan and Seomjin river basin management committee, "A management plan for river-stream to improve water quality in Yeogsan River" 2006