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http://dx.doi.org/10.4491/KSEE.2016.38.10.558

Water Quality Analysis in Nakdong River Tributaries for the Determination of Priority Management Areas  

Im, Tae Hyo (Nakdong River Environment Research Center, National Institute of Environmental Research)
Na, Seungmin (Nakdong River Environment Research Center, National Institute of Environmental Research)
Shin, Sangmin (Nakdong River Environment Research Center, National Institute of Environmental Research)
Son, Younggyu (Department of Environmental Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.38, no.10, 2016 , pp. 558-565 More about this Journal
Abstract
Water quality data including flow rates and BOD/COD/T-N/T-P/SS/TOC concentrations in Nakdong river tributaries were analyzed to determine priority management areas using 699 data sets from 195 locations in 2015. It was pointed out that the coefficients of variation, the ratio of the standard deviation to the mean, for the concentrations and loading rates of BOD, T-P, and TOC in each monitoring location were so large that average values of water quality monitoring data might be not appropriate to determine the priority management areas among all 195 monitoring stations in Nakdoing river. Therefore we suggested two evaluation methods using each water quality data independently. In the first method the excess numbers of the BOD, T-P, and TOC concentrations comparing to the water quality standards in the medium-sized management areas in Nakdong river was evaluated for each monitoring station. In the second method the percentile ranks of the loading rates of the BOD, T-P, and TOC were obtained for each monitoring data. The two groups of the priority management areas determined by each method were compared and the water quality characteristics in Nakdoing river were investigated.
Keywords
Nakdoing River; Water Quality; Tributaries; Priority Management Areas; Coefficient of Variation;
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Times Cited By KSCI : 7  (Citation Analysis)
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