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KMID : 1024520020110090945
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Journal of the Environmental Sciences
2002 Volume.11 No. 9 p.945 ~ p.954
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A Study on the Characteristics of Pollutant Loads in Kamak Bay Watershed
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Lee Dae-In
Cho Hyeon-Seo
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Abstract
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The objective okgf this study is understanding and evaluation of temporal and spatial variation of pollutant loads by input sources for water quality management in Kamak Bay. Flow rate of rivers and ditches ranges from about in October to in January. In particular, the R2 predominated flow rate among input sources. Total COD, BOD, DIN and DIP loadings in January were about 896kg/d, 718kg/d, 2,152kg/d, and 154kg/d, respectively, which exceeded those of October. Lower POC/TOC levels are estimated in R2, and also in October. Temporal variation of pollutant loads were closely related to the human activity. Total discharging loadings of BOD, TN and TP by unit loading estimation were 4,993.0kg/d, 2,558.7kg/d, and 289.2kg/d, respectively, and were mainly affected by the population. Runoff ratio of BOD was about 0.14 in January Mean and loadings from sediment were 16.23mg//d and 7.26mg//d, respectively. For the improvement of water quality in this area, not only pollutant loads of rivers and ditches but also benthic flux from sediment should be reduced within the limits of the environmental capacity.
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KEYWORD
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Pollutant Load, Water Quality Management, Unit Loading Estimation, Benthic Flux, Environmental Capacity
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