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http://dx.doi.org/10.4491/KSEE.2017.39.5.255

Evaluation of the Water Quality Changes in Agricultural Reservoir Covered with Floating Photovoltaic Solar-Tracking Systems  

Lee, Inju (Department of Environmental Engineering, Hanbat National University)
Joo, Jin Chul (Department of Civil & Environmental Engineering, Hanbat National University)
Lee, Chang Sin (Department of Civil & Environmental Engineering, Hanbat National University)
Kim, Ga Yeong (Department of Civil & Environmental Engineering, Hanbat National University)
Woo, Do Young (Solkiss Inc.)
Kim, Jae Hak (Solkiss Inc.)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.5, 2017 , pp. 255-264 More about this Journal
Abstract
To evaluate the water quality changes in agricultural reservoir covered with floating photovoltaic solar-tracking systems, the water quality variations with time and depth were monitored on both six sites for light blocking zones and four sites for light penetration zones after the installation of floating photovoltaic solar-tracking systems in Geumgwang reservoir at Anseong-si, Kyeonggi province. For one year with 16 monitoring events, water quality parameters [i.e., water temperature, pH, dissolved oxygen (DO), chlorophyll-a (Chl-a), and blue-green algae (BGA)] were monitored at depths of 0.3 m, 1 m, 3 m, and 5 m, while chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) were monitored at depths of 0.3 m. Statistically, the difference in all water quality parameters was not significantly different (p > 0.05) at the level of significance of 0.05. Based on these results, the water quality data from light blocking zones (site 1~6) and light penetration zones (site 7~10) were clustered, and were compared with time and depth. As a result, the difference in water temperature, pH, DO, COD, TN, TP, Chl-a, and BGA between light blocking zones and light penetration zones was not significant (p > 0.05) with different time and depth. For Chl-a and BGA, some data from light blocking zones greater than light penetration zones were temporary observed due to the severe drought, low water storage rate, and over growth of periphyton. However, this temporal phenomenon did not impact the water quality. Considering the small water surface area (${\leq}0.5%$) covered by floating photovoltaic solar-tracking systems, the mixing effect of whole Geumgwang reservoir caused by Ekman current and continuous discharge were more dominant than the effect of reduced solar irradiance. Further study is warranted to monitor the changes in water quality and aquatic ecosystems with greater water surface area covered by floating photovoltaic solar-tracking systems for a long time.
Keywords
Agricultural Reservoir; Floating Photovoltaic Solar-Tracking Systems; Water Quality Change; Solar Irradiance; Algae; Light Blocking;
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Times Cited By KSCI : 6  (Citation Analysis)
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1 Omer, A. M., "Energy, environment and sustainable development," Renew. and Sust. Energy Rev., 12(9), 2265-2300(2007).   DOI
2 Won, C. S., "Technical trend of floating PV system," J. Korean Solar Energy Soc., 13(1), 18-23(2015).
3 Park, J., Seager, T. P. and Rao, P. S. C., "Lessons in riskversus resilience-based design and management," Integrated Environ. Assessment and Manage., 7(3), 396-399(2011).   DOI
4 Korea legislation research institute, "Study on Promotion Legislation for New & Renewable Energy against Energy Crisis,"(2011).
5 Lee, S. H., Lee, N. H., Choi, H. C. and Kim, J. O., "Study on Analysis of Suitable Site for Development of Floating Photovoltaic System," J. KIIEE, 26(7), 30-38(2012).
6 Korea New and Renewable Energy Center, "2014 Renewable energy industry statistics,"(2015).
7 Roh, T. H., "Photovoltaic Business of the present condition and policy considerations," Environ. Forum, 19(6), 1-19(2015).
8 Choi, B. S., Jang, T. H., Kim, Y. I., Yoo, J. H. and Jang, H. Y., "A study on the verification of the environmental safety in floating photovoltaic power system," in Proceedings of the annual meeting of Korean Society For New And Renewable Energy, KSNRE, Haeundae grand hotel, Busan, pp. 211-211(2015).
9 Choi, Y. K., "A Study on Power Generation Analysis of Floating PV System Considering Environmental Impact," Int. J. Software Eng. and Its Appl., 8(1), 75-84(2014).   DOI
10 Korea National Environmental Technology Information Center, "Technical trend of floating PV system,"(2016).
11 Antonio, C., Manuel, F. and Ricardo, F., "An anova test for functional data," Computational Statistics & Data Anal., 47(1), 111-122(2004).   DOI
12 Ministry of Environment, "environmental standard for water quality,"(2016).
13 Lee, I. J., "Evaluation of the water quality changes in agricultural reservoir covered with floating photovoltaic solartracking systems," Master dissertation, The graduate school of Hanbat National University, Korea(2017).
14 Ministry of Environment, "Official test method enacted by Korean Ministry of Environment,"(2016).
15 Kim, J. H., Lee, S. W. and Cha, S. M., "Environmental statistics and data analysis," Hannarae Publishing Co., Seoul, pp. 55-243(2016).
16 Korea Meteorological Administration, "2015 Annual climatological report,"(2016).
17 Kim, J. M., Park, J. D., Noh, H. R. and Han, M. S., "Changes of Seasonal and Vertical Water Quality in Soyang and Paldang River-reservoir System, Korea," Korean J. Limnol., 35(1), 10-20(2002).
18 Solkiss, "Comparison analysis of Photovoltaic system,"(2015).
19 Kim, H. J., Yoon, K. S. and Lee, K. S., "Characteristics of the Water Quality of Wanggung Agricultural Reserivor," J. KCID, 10(2), 24-35(2003).
20 Korea Rural Community Corporation, "Investigation of water pollution source in the waterside area in geumgwang reservoir,"(2008).
21 Won, S. J., "Water Quality Forecasting in Geumgwang Reservoir using WASP5 Model," Master dissertation, The graduate school of technology Hankyong National University, Korea(2008).
22 Agriculture water total information system (RAWRIS) Home Page, https://rawris.ekr.or.kr, Dec.(2015).
23 Kang, Y. M. and Song, H. G., "Effect of sediment organic in Pond Yeonjukji matter on the oxygen consumption," J. Basic Sci., 10, 74-79(1999).
24 Kim, H. S. and Hwang, S. J., "Seasonal Variation of Water Quality in a Shallow Eutrophic Reservoir," Korean J. Limnol., 37(2), 180-192(2004).
25 Lee, Y. W. and Lee, H. Y., "Effects of Light-Blocking on Water Quality and Phytoplankton Community in Lake Juam," Korean J. Limnol., 36(2), 150-160(2003).
26 Larry, L. L. and Shane, L. L., "Riparian Shade and Stream Temperature," Rangelands, 18(4), 149-152(1996).
27 Jeon, J. H., Yoon, C. G., Ham, J. H., Kim, H. I. and Hwang, S. J., "Effects of Physical Parameters on Water Quality in Agricultural Reservoirs," Korean J. Limnol., 35(1), 28-35(2002).
28 Lee, J. W., Kim, H. J. and Cho, Y. S., "A Numerical Model for Wind-Induced Circulation in a Thermally Stratified Flow," J. Korea Water Resour. Assoc., 43(10), 911-920(2010).   DOI
29 Allan, K. and Thomas, D. B., "Effect of Temperature on Blue-Green Algae (Cyanobacteria) in Lake Mendota," Appl. and Environ. Microbiol., 36(4), 572-578(1978).
30 Park, J. W., Yu, S. H., Lee, J. E. and Seo, E. W., "Dynamics of Phytoplankton Community by the Water Depth in Andong Reservoir," J. Life Sci., 18(9), 1249-1256(2008).   DOI