Effect of a seasonal di use pollution migration on natural organic matter
behavior in a stratified dam reservoir |
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Authors: | Soon Ju Yu Jae Yil Lee and Sung Ryong Ha |
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Institution: | 1. National Institute of Environmental Research, Kyongseodong, Seogu, Incheon 404-708, Korea. E-mail: ysu1221@korea.kr,2. Department of Urban Engineering, Chungbuk National University, 12 Keshin-dong Heungduk-gu Cheongju Chungbuk 361-810, Korea and 2. Department of Urban Engineering, Chungbuk National University, 12 Keshin-dong Heungduk-gu Cheongju Chungbuk 361-810, Korea |
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Abstract: | This article aims to describe the influence of di use pollution on the temporal and spatial characteristics of natural organic matter
(NOM) in a stratified dam reservoir, the Daecheong Dam, on the basis of intensive observation results and the dynamic water quality
simulation using CE-QUAL-W2. Turbidity is regarded as a comprehensive representation of allochothonous organic matter from di use
sources in storm season because the turbidity concentration showed reasonable significance in a statistical correlation with the UV
absorbance at 254 nm and total phosphorus. CE-QUAL-W2 simulation results showed good consistency with the observed data in terms
of dissolved organic matter (DOM) including refractory dissolved organic carbon (RDOC) and labile DOC and also well explained the
internal movement of constituents and stratification phenomenon in the reservoir. Instead turbidity and NOM were related well in the
upper region of the reservoir according to flow distance, gradually as changing to dissolved form of organic matter, RDOM a ected
organic matter concentration of reservoir water quality compared to turbidity. To control the increase of soluble organic matters in the
dam reservoir, appropriate dam water discharge gate operation provided e ective measurement. Because of the gate operation let avoid
the accumulation of organic matter within a dam reservoir by shorten of turbid regime retention time. |
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Keywords: | CE-QUQL-W2 natural organic matter stratified dam reservoir turbidity flow |
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