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ISSN : 2288-1115(Print)
ISSN : 2288-1123(Online)
Korean Journal of Ecology and Environment Vol.45 No.2 pp.210-217

낙동강 수계 내 하수처리 방류수가 하류 하천 유기물에 미치는 영향: 부하량 비교

성진욱, 박제철*
금오공과대학교 환경공학과

Effects of Sewage Effluent on Organic Matters of Nakdong River: Comparison of Daily Loading

JeChul Park*, JinUk Seong
Department of Environmental Engineering, Kumoh National Institute of Technology
(Manuscript received 1 March 2012, Revised 8 May 2012, Revision accepted 31 May 2012)


This study investigated the water quality of effluents from the wastewater treatmentplants, located at the Gumi Complex 4, Gumi, and Wonpyong, in Gumi. DOC accountedfor higher than 70% of TOC, and oxidation efficiencies, calculated from carbon,were 13~43% for BOD and 37~73% for CODMn, respectively. Based on the biologicaldecomposition experiments, R-DOC account for higher than 70% of DOC, mostly beingoccupied by refractory organic matters. This indicated that the biodegradable organicsoccupied more proportions of organic loadings than the refractory organics. Theeffect of the organics from a discharge of a sewage treatment plant on rivers, Gumiindustrial Complex 4, Gumi, and Wonpyong on lower streams of the Nakdong Riverwere found to be 15%, 6% and 16% respectively. The ratio of 15% suggests that comparatively,no large portions of TOC loadings are occupied, but the problem is thatthe biodegradable organic matters occupy a lot more proportions than that of therefractory organic matters. Thus, it is highly estimated that the refractory organicscan gradually increase the pollution level of organics and precursors of disinfectionby-products to the down-stream water treatment plants.


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