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http://dx.doi.org/10.5322/JESI.2019.28.5.465

Analyses of TOC Efficiency and Correlation between DO, BOD, COD and Influence Factors using Long-term Observation Data in the Main Stream of 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 (K-water Research Institute, Korea Water Resources Corporation)
Publication Information
Journal of Environmental Science International / v.28, no.5, 2019 , pp. 465-474 More about this Journal
Abstract
Herein, we analyzed the spatial and temporal variation of DO (dissolved oxygen), BOD (biochemical oxygen demand), and COD (Chemical Oxygen Demand) with the monthly mean observed data for 10 years (2008~2017) in the main stream of the Nakdong River. The water quality of the stations declined in a downstream direction, with the BOD and COD showing their highest values at the ST5 station. From the analysis of the correlation of water quality components at 10 stations, the correlation coefficient between the DO and water temperature was more than -0.90, and that between BOD and Chl-a was 0.48~0.85, and that between COD and TOC was more than 0.65 except for the ST5 and ST10 stations. From the regression analysis using data collected from all stations, the water temperature and DO decreased linearly with a coefficient of determination of 0.90, and the Chl-a and BOD could be described by increasing power functions with a coefficient of determination of 0.83. The TOC and COD followed increasing logarithm functions with a coefficient of determination of 0.58. The TOC efficiency at the 10 stations was estimated and the average efficiencies of BOD and COD were 15.5~36.3% and 57.4~89.6%, respectively.
Keywords
Nakdong river; DO; BOD; COD; TOC efficiency;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Park, B., 2007, Introduction of water pollution, Hyungseul Publishing, 242.
2 Park, J. B., Kal, B. S., Kim, S. H., 2018, Long-term trend analysis of major tributaries of Nakdong River using water quality index, J. Wetlands Res., 20(3), 201-209.   DOI
3 Park, J. H., Lee, G. S., Yang, J. S., Kim, S. W., 2016, A Hydrometeorological time series analysis of Geum River watershed with GIS data considering climate change, J. Kor. spa. info. soc., 20(3), 39-50.
4 Ahn, J. M., Lee, I. J., Jung, K. Y., Kim, J. E., Lee, K. C., Cheon, S. U., Lyu, S. W., 2016, Characteristics of trend and pattern for water quality monitoring networks data using seasonal -kendall, SOM and RDA on the Mulgeum in the Nakdong River, J. Environ. Science Int., 25(3), 361-372.   DOI
5 Choi, K. Y., Im, T. H., Lee, J. W., Cheon, S. U., 2012, Evaluation of water quality characteristics in the Nakdong River using statistical analysis, J. Korea Water Res. Assoc., 45(11), 1157-1168.   DOI
6 Jung, S. Y., Kim, I. K., 2017, Analysis of water quality factor and correlation between water quality and chl-a in middle and downstream weir section of Nakdong River, J. Kor. Soc. Environ. Eng., 39(2), 89-96.   DOI
7 Kim, B. C., Jung, S. M., Jang, C. W., Kim, J. K., 2007, Comparison of BOD, COD and TOC as the indicator of organic matter pollution in streams ad reservoirs of Korea, J. Kor. Soc. Environ. Eng., 29(6), 640-643.
8 Kim, H. S., Hong, J. J., Seong, J. U., Choi, K. S., Park, J. C., 2013, Comparison of organic matter distribution in major tributaries of the Nakdong river, J. Kor. Soc. Wat. Environ., 29(5), 618-624.
9 Lee, A. Y., Park, M. J., Jo, D. J., Kim, S. D., 2010, Estimating BOD, COD and TOC hydrologic flux in Nakdong River basin, J. Kor. Soc. Environ. Eng., 32(9), 830-839.
10 Lim, J. S., Kim, Y. W., Lee, J. H., Park, T. J., Byun, I. G., 2015, Evaluation of correlation between chlorophyll-a and multiple parameters by multiple linear regression analysis, J. Kor. Soc. Environ. Eng., 37(5), 253-261.   DOI
11 Na, S. M., Kwon, H. G, Shin, S. M., Son, Y. G., Shin, D. S., Im, T. H., 2016, A Study on seasonal pollutant distribution characteristics of contaminated tributaries in Nakdong river basin, J. Wetlands Res., 18(3), 301-312.   DOI
12 Na, S. M., 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. Wetlands Res., 17(4), 380-390.   DOI