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J Korean Soc Environ Eng > Volume 38(3); 2016 > Article
J Korean Soc Environ Eng 2016;38(3): 117-127. doi: https://doi.org/10.4491/KSEE.2016.38.3.117
새만금유역의 수질을 고려한 환경유지용수의 시나리오 분석
김세민1, 박영기1, 원찬희2, 김민환3
1전북대학교 토목공학과
2전북대학교 환경공학과
3호남대학교 토목환경공학과
Analysis of Scenarios for Environmental Instream Flow Considering Water Quality in Saemangeum Watershed
Se-Min Kim1, Young-Ki Park1, Chan-Hee Won2, Min-Hwan Kim3
1Department of Civil Engineering, Chonbuk National University
2Department of Environmental Engineering, Chonbuk National University
3Department of Civil & Environmental Engineering, Honam University
Corresponding author  Young-Ki Park ,Tel: 063-270-4790, Fax: 063-270-4056, Email: parkyk@jbnu.ac.kr
Received: December 30, 2015;  Revised: January 11, 2016;  Accepted: March 4, 2016.  Published online: March 31, 2016.
ABSTRACT
In this study, analyzed scenarios of the environmental instream flow for water quality improvement in Saemangeum watershed. In order to get an environmental instream flow, Methodology is selected for Retention-Basin, reservoir expansion, new dam construction, Modification of water intake and drainage system, Rearrangement of plan for system which Yongdam and Seomjin river dam have been used water supply. The study composed of diverse scenario of Environmental instream flow increasement and analyzed the effect of improving the water quality by the QUAL2K model and calculation of runoff for saemangeum watershed by SWAT model. The following water quality indicators have been simulated in irrigation and non-irrigation period for BOD and T-P. When scenarios applied to water quality model, Improvement rate in the water quality for Total Maximum Daily loads of Mankyung B unit watershed during irrigation and non-irrigation period is BOD (28.70%), T-P (17.09%) and BOD (28.51%), T-P (28.68%) respectively. Dongjin A unit watershed during irrigation and non-irrigation period is BOD (14.39%), T-P (14.59%) and BOD (15.54%), T-P (19.46%) similary. Simulation results is to quantify the constribution of the improvement in the water quality. In particular, It was demonstrative that improving effect for water quality was evaluated to be great in non-irrigation period.
Key Words: Saemangeum Basin, Environmental Instream Flow, QUAL2K, SWAT, Water Quality Improvement
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