Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Effects of the Characteristics of Influent Wastewater on Removal Efficiencies for Organic Matters in Wastewater Treatment Plants

하·폐수 처리시설 내 유입수 특성이 유기물 처리효율에 미치는 영향

  • Lee, Tae-Hwan (Department of Earth and Environmental Sciences, Sejong University) ;
  • Park, Min-Hye (Department of Earth and Environmental Sciences, Sejong University) ;
  • Lee, Bomi (Department of Earth and Environmental Sciences, Sejong University) ;
  • Hur, Jin (Department of Earth and Environmental Sciences, Sejong University) ;
  • Yang, Heejeoug (Han-River Environment Research Center)
  • 이태환 (세종대학교 지구환경과학과) ;
  • 박민혜 (세종대학교 지구환경과학과) ;
  • 이보미 (세종대학교 지구환경과학과) ;
  • 허진 (세종대학교 지구환경과학과) ;
  • 양희정 (국립환경과학원 한강물환경연구소)
  • Received : 2009.03.13
  • Accepted : 2009.08.12
  • Published : 2009.09.30
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Abstract

Characteristics of organic matters (OM) in wastewater and the removal efficiencies were investigated using the influent and the effluent samples collected from 21 wastewater treatment plants. The OM characteristics investigated included biodegradability, humic content, specific UV absorbance (SUVA), the distribution percentage of refractory OM (R-OM), and synchronous fluorescence spectra. The types of wastewater (sewage, livestock waste/night soils, industrial waste) were easily distinguished by comparing the synchronous fluorescence spectra of the influent wastewater. The prominent peak of protein-like fluorescence (PLF) was observed for livestock waste/night soils whereas sewage exhibited a unique fluorescence peak at a wavelength of 370 nm. Irrespective of the wastewater types, the distribution percentage of R-OM increased from the influent to the effluent. Livestock waste/night soils showed the highest removal efficiency among all the three types of wastewater. There was no statistical difference of the removal efficiency between a traditional activated sludge and biological advanced treatment processes. Removal efficiency based on dissolved organic carbon DOC presented good correlations with the distribution percentage of R-OM and fulvic-like fluorescence (FLF) of the influent. The prediction for DOC removal efficiency was improved by using multiple regression analyses based on some selected OM characteristics and mixed liquid suspended solid (MLSS).

Keywords

Acknowledgement

Grant : 한강수계 난분해성 물질 증감요인 규명 및 관리방안 연구

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