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http://dx.doi.org/10.5322/JESI.2019.28.3.357

Water Quality Level of the Living Environmental Standards and Regression Analysis in the Major Tributaries of the Nakdong River  

Kang, Dong-hwan (Environmental Research Institute, Pukyong National University)
So, Yoon-hwan (Environmental Research Institute, Pukyong National University)
Park, Kyeong-deok (Interdisciplinary Program of Marine Convergence Design, Pukyong National University)
Kim, Il-kyu (Department of Environmental Engineering, Pukyong National University)
Kim, Byung-Woo (Water Resources Research Center, K-water Research Institute, Korea Water Resources Corporation)
Publication Information
Journal of Environmental Science International / v.28, no.3, 2019 , pp. 357-369 More about this Journal
Abstract
In this study, the water quality components (pH, BOD, COD, TOC, SS, DO, TP) and the water quality, observed for 10 years (2008~2017) in the five tributaries of the Nakdong River with the highest flow rates, were analyzed. Monthly levels of the water quality components were estimated and regression functions were used to quantitatively explain the changes in the BOD and COD components, with respect to the TOC components. The results of analyzing the water quality levels in terms of the living environmental standards show that the lowest water quality was observed midstream (ST-3) and the highest water quality was observed upstream (ST-1 and ST-2). The regression function was estimated to be a linear function in all five tributaries, and the goodness of fit of the function was high upstream (ST-2), midstream (ST-3), and downstream (ST-4). According to the regression analysis using the observation data from 2008~2017, we found that the consumption of dissolved oxygen increased with an increase in organic matter in the major tributaries of the Nakdong River.
Keywords
Nakdong river; Major tributaries; Water quality level; Regression analysis;
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1 Byoun, J., Kim, T., Lee, S., Hong, T., Kim, H., 2008, Correlation between TOC, UVA and COD of environmental water samples, J. Kor. Soc. Envir. Anal., 11(4), 286-291.
2 Cho, B., Choi, J., Yi, S., Kim, Y., 2012, Selection priority of tributary catchments for improving water quality using stream grouping method, J. Kor. Soc. Wat. Envir., 28(1), 18-25.
3 Im, T., Son, Y., 2016, Water quality analysis in Nakdong river tributaries, J. Envir. Sci. Int., 25(12), 1661-1671.   DOI
4 Jung, S., Kim, K., Seo, D., Kim, J., Lim, B., 2013, Evaluation of water quality characteristics of grade classification of Yeongsan river tributaries, J. Kor. Soc. Wat. Envir., 29(4), 504-513.
5 Kim, B., Jung, S., Jang, C., Kim, J., 2007, Comparison of BOD, COD ad TOC as the indicator of organic matter pollution in streams ad reservoirs of Korea, J. Kor. Soc. Envir. Eng., 29(6), 640-643.
6 Kim, H., Hong, J., Seong, J., Choi, K., Park, J., 2013, Comparison of organic matter distribution in major tributaries of the Nakdong river, J. Kor. Soc. Wat. Envir., 29(5), 618-624.
7 Kim, Y., Gal, B., Park, J., Kim, S., Im, T., 2018, Classification of Nakdong river tributaries under priority management based on their characteristics and water quality index, J. Kor. Soc. Eng., 40(2), 73-81.   DOI
8 Kim, Y., Lee, S., 2011, Evaluation of water quality for the Han river tributaries using multivariate analysis, J. Kor. Soc. Envir. Eng., 33(7), 501-510.   DOI
9 Lim, B., Cho, B., Kim, Y., Kim, D., 2010, Application of priority order selection technique for water quality improvement in stream watershed by relationship of flow and water quality, J. Kor. Soc. Envir. Eng., 32(8), 802-808.
10 MOE, 2017, 2017 White paper of environment, Ministry of environment, 630p.
11 Na, S., Kwon, H., Shin, S., Son, Y., Shin, D., Im, T., 2016, A study on seasonal pollutant distribution characteristics of contaminated tributaries in Nakdong river basin, J. Wet. Res., 18(3), 301-312.   DOI
12 Choi, D., Jung, J., Yoon, K., Lee, K., Choi, W., Lim, S., Park, H., Yim, B., Hwang, T., 2012, Estimation of TOC concentration using BOD, COD, in runoff from paddy fields, J. Kor. Soc. Wat. Envir., 28(6), 813-818.
13 Na, S., Lim, T. H., Lee, J. Y., Kwon, L. H., Cheon, S. U., 2015, Flow rate.water quality characteristics of tributaries and a grouping method for tributary management in Nakdong river, J. Wet. Res., 17(4), 380-390.   DOI
14 Yu, S., Hwang, J., Yoon, Y., Cheon, S., Han, E., 1999, Index of organic matter in stream and lake, Kor. Soc. Envir. Impa. Assess., 8(1), 81-92.