Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Predictation of the Concentrations and Distributions of Refractory Organic Matters in Wastewater using Spectroscopic Characteristics

분광특성을 이용한 하·폐수시료 내 난분해성 유기물 농도 및 분포 예측

  • Lee, Bomi (Department of Earth and Environmental Sciences, Sejong University) ;
  • Park, Min-Hye (Department of Earth and Environmental Sciences, Sejong University) ;
  • Lee, Tae-Hwan (Department of Earth and Environmental Sciences, Sejong University) ;
  • Hur, Jin (Department of Earth and Environmental Sciences, Sejong University) ;
  • Yang, Heejung (Han-River Environment Research Center)
  • 이보미 (세종대학교 지구환경과학과) ;
  • 박민혜 (세종대학교 지구환경과학과) ;
  • 이태환 (세종대학교 지구환경과학과) ;
  • 허진 (세종대학교 지구환경과학과) ;
  • 양희정 (국립환경과학원 한강물환경연구소)
  • Received : 2009.03.13
  • Accepted : 2009.06.09
  • Published : 2009.07.30
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Abstract

Treated or untreated wastewater may be a major source of refractory organic matters (R-OM) in drinking water sources. For this study, spectroscopic characteristics of wastewater OM were investigated using the samples from 20 wastewater treatment plants, which are located at the upstream of the lake Paldang, to suggest a estimate index for R-OM in wastewater. R-OM was quantified by measuring total organic carbon (TOC) concentration of the wastewater samples remaining after 28-day dark incubation. Among the traditional OM indices such as chemical oxygen demand (COD) and initial TOC, CODMn showed the lowest correlation coefficients with R-TOC of the samples. The ratios of carbonaceous biochemical oxygen demand (CBOD) to $COD_{Cr}$ had a better correlation with the percent distribution of R-OM than $BOD/COD_{Cr}$ ratios. terrestrial humic-like fluorescence (THLF) exhibited the highest correlation coefficient with R-TOC among the indices obtained from the synchronous fluorescence spectra of the samples. Milori index, one of the humification indices, showed a good correlation with the percent distribution of wastewater. This study demonstrated that fluorescence properties might be a better indices to estimate the concentrations and the distributions of wastewater OM compared to the specific UV absorbance (SUVA) values. Some useful formulas based on OM spectroscopic characteristics were finally suggested to predict R-OM in wastewater.

Keywords

Acknowledgement

Grant : 한강수계 난분해성 물질 증감요인 규명 및 관리방안 연구

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