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http://dx.doi.org/10.14249/eia.2019.28.6.507

Simulations of the Effect of Flow Control and Phosphate Loading on the Reduction of Algae Biomass in Gangjeong-Goryong Weir  

Park, Dae-Yeon (Department of Environmental Engineering, Chungbuk National University)
Kim, Sung-Jin (Department of Environmental Engineering, Chungbuk National University)
Park, Hyung-Seok (Department of Environmental Engineering, Chungbuk National University)
Chung, Se-Woong (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Environmental Impact Assessment / v.28, no.6, 2019 , pp. 507-524 More about this Journal
Abstract
The purpose of this study was to validate the EFDC model for the weir pool of Gangjeong-Goryong Weir located in Nakdong River, and evaluate the effect of flow control and phosphate loading reduction on the water quality and algae biomass by group (Diatom, Green, Cyanobacteria). As a result of model validation using 2018 experimental data,the time series of water level and vertical distribution of water temperature, DO, organic matter, nitrogen, and phosphorus time series were properly simulated. Seasonal fluctuations of algae biomass by group were adequately reproduced, but the deviations between measured and simulated values were significant in some periods. As a result of scenario simulations to control the water level and flow rate, the thermal stratification was resolved as the water level was lowered and the flow rate increased. The flow velocity at which the water temperature stratification was resolved was about 0.1 m/s, which is consistent with the previous study results of Baekje Weir in Geum River. Simulations of the 2Q flow scenario showed that Chl-a decreased by 8.7% and the cell density of diatom and green algae declined. The cell density of cyanobacteria increased, however, because the high concentrations of cyanobacteria in the upstream boundary conditions directly affected downstream due to increased flow velocity. In the scenario simulation of reducing the influent phosphate load concentration (average 0.056 mg/L) to 50%, Chl-a decreased by 13.6%.The results suggest that the upstream algae concentration and phosphorus load reduction should be considered simultaneously with hydraulic control to prevent algal overgrowth of Gangjeong-Goryong Weir.
Keywords
Gangjeong Goryong Weir; Nakdong River; Phosphate Loading; Algae Control;
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1 Alexander JH, Charles RG. 1994. Limnology, Singapore, McGraw-Hill.
2 Craig PM. 2014. Sigma-Zed. A Computationally Efficient Approach to Reduce the Horizontal Gradient Error in the EFDC's Vertical Sigma Grid. Proceedings of the 11th International Conference on Hydrodynamics (ICHD, Singapore, October 2014).
3 Chong SA, Yi HS, Yi, Hwang HS, Kim HJ. 2015. Modeling the Flushing Effect of Multipurpose Weir Operation on Algae Removal in Yeongsan River J. Korean Soc. Environ. Eng. 37(10): 563-572. [Korean Literature]   DOI
4 Fogg GE. 1968. The Physiology of an Algal Nuisance. Proc Roy Soc Lond B. 173: 175-189.
5 Hamrick JM. 1992. A Three-dimensional Environmental Fluid Dynamics Computer Code : Theoretical and Computational Aspects. The College of William and Mary, Virginia Institute of Marine Science, Gloceslter Point. V A.
6 Hwang SJ. 2012. Forecasting System for Water Quality Using Artificial Neural Networks : The Kangjung-Koryung Weir on the Nakdong River. Ph.D. Dissertation. Kyungbook National University. [Korean Literature]
7 Jeon JH, Chung SW, Park HS, Jang JR. 2011. Evaluation of EFDC for the Simulations of Water Quality in Saemangeum Reservoir. Journal of Korean Society on Water Quality. 27(4): 445-460. [Korean Literature]
8 Kim BC, Kim EK, Pyo DJ, Park HD, Heo WM. 1992. Toxic Cyanobacterial Blooms in Korean Lakes. J. KSWQ Sep. 1995. 11: 231-237 [Korean Literature]
9 Kim BC, Kim JG, Jeon MS. 2003. Study of Institution Improvement for Efficient Lake Management in Algae Control. Water Management Policy Discussion [Korean Literature]
10 Kim SJ, Seo DI, Ahn KH. 2011. Estimation of Proper EFDC Parameters to Improve the Reproducibility of Thermal Stratification in Korea Reservoir. Journal of Korea Water Resources Association. 44(9): 741-751. [Korean Literature]   DOI
11 Kim BC. 2014. Algal bloom and Limiting Factor in Rivers and Lakes. Water Environment Policy Forum p. 97-113 [Korean Literature]
12 Kim DH, Kim SM. 2016. Analysis of Downstream Water Quality Improvement by Agricultural Reservoir Release Using QUAL2K. Journal of Agriculture & Life Science 50(5): 205-216. [Korean Literature]
13 Kim DM, Park HS, Chung SW. 2017. Relationship of the Thermal Stratification and Critical Flow Velocity Near. Journal of Korean Society on Water Environment. 33(4): 449-459. [Korean Literature]   DOI
14 K-water. 2018. Analysis on the Mechanism of Algal Bloom and Seasonal Succession in 2nd Year. K-water. [Korean Literature]
15 Kim EJ, Park CM, Na MJ, Park H, Kim BS. 2018. Impact Analysis of Tributaries and Simulation of Water Pollution Accident Scenarios in the Water Source Section of Han River Using3-D Hydrodynamic Model. Journal of Korean Society on Water Environment. 34(4): 363-374. [Korean Literature]   DOI
16 Mitrovic SM, Oliver RL, Rees C, Bowling LC, Buckney RT. 2003. Critical Flow Velocities for the Growth and Dominance of Anabaena Cardinalis in Some Turbid Freshwater Rivers, Freshwater Biology. 48: 164-174.   DOI
17 Ministry of Land, Transport and Maritime Affairs, Busan Regional Construction and Management Administration. 2009. Primary River Planning of Nakdong River Basin. [Korean Literature]
18 Min YH, Hyun DY, Eum CH, Lee SH. 2011. A Study on the Relationship Between Concentration of Phosphorus, Turbidity, and pH in Water and Soil. Analytical Science & Technology. 24(4): 304-309. [Korean Literature]   DOI
19 Paerl HW. 1988. Growth and Reproductive Strategies of Freshwater Blue-green Algae (Cyanobacteria). In SANDGREN CD (Ed.). New York : Cambridge University Press. p. 261-315.
20 Park DY, Park HS, Kim SJ, Chung SW. 2019. Analysis of Water Quality Variation by Lowering of Water Level in Gangjeong-Goryong Weir in Nakdong River. J. Environ. Impact Assess. 28(3): 245-262 [Korean Literature]   DOI
21 Reynolds CS. 1987. Cyanobacterial Water Blooms. Adv. Bot. Res. 13: 67-143.   DOI
22 Sherman BS, Webster IT. 1998. Transitions between Aulacoseira and Anabaena Dominance in a Turbid River Weir Pool, Limnology and Oceanography. 43(8): 1902-1915.   DOI
23 Tetra Technologies, incorporated (Tetra Tech). (2007a). The Environmental Fluid Dynamics Code Theory and Computation Volume 1 : Hydrodynamics and Mass Transport, Technical report.
24 Tetra Technologies, incorporated (Tetra Tech). (2007b). The Environmental Fluid Dynamics Code User Manual US EPA Version 1.01, Technical report.
25 Tetra Technologies, incorporated (Tetra Tech). (2007c). The Environmental Fluid Dynamics Code Theory and Computation Volume 3: Water Quality Module
26 WHO. 1999. Toxic cyanobacteria in water: A guide to their public health consequences, monitoring and management.
27 Xia L, Xiaohua L, Yuwei C. 2011. The Effects of Temperature and Nutrient Ratios on Microcystis Blooms in Lake Taihu, China. An 11-Year Investigation, Harmful Algae, 10: 337-343.   DOI