Analysis of seasonal water pollution based on rainfall feature at Anyang river basin in Korea |
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| Authors: | J G Han Y K Lee T H Kim E J Hwang |
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| Institution: | (1) Department of Civil and Environmental Engineering, Chung-Ang University, Korea;(2) Department of Civil, Environment and Information Engineering, Daelim College, Korea;(3) Division of Civil and Environmental Engineering, Korea Maritime University, Korea;(4) Department of Electronic and Computer Engineering, Korea University, Korea |
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| Abstract: | To determine selected water pollution parameters of the Anyang River (one of the biggest contributory branches of the Han
River in Korea) and its main tributaries, the geological and topographical and rainfall features in its basin were investigated,
and the resulting data were tabulated. Samples were collected at the upper, mid and down parts of the Anyang River and its
branches and were analyzed based on biochemical and chemical methods, Korean biotic index (KBI) and Saprobien systems. Selected
parameters of concern include BOD, heavy metals, nonpoint pollution and sewage discharge. The Anyang River basin has a torrential
heavy rainfall; however, the rate of rainfall significantly varies from season to season. Water pollution levels in the dry
season increase dramatically. The mainstream of the Anyang River is classified as fifth grade polysaprobic water according
to Saprobien system. In addition, the biotic index is over 2.5 in overall. General pollution at the junction of the Anyang
River and each branch stream varies. Possible countermeasures to improve the water quality of the river include intercept
the non-treated waste water and sewage at the Anyang River junction and each branch stream, enforcement of water management
during the rainy season, and continuous investment on environmental restoration. |
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| Keywords: | Topographical and rainfall features Water quality Pollution |
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