Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A study on operation and management for TOC removal of public sewage treatment works

하수처리시설에서 총유기탄소(TOC) 처리를 위한 운영·관리 고찰

  • Jeong, Dong-Hwan (National Institute of Environmental Research, Water Supply and Sewerage Research Division) ;
  • Chung, Hyenmi (National Institute of Environmental Research, Water Supply and Sewerage Research Division) ;
  • Cho, Yangseok (National Institute of Environmental Research, Water Supply and Sewerage Research Division) ;
  • Kim, Eunseok (National Institute of Environmental Research, Water Supply and Sewerage Research Division) ;
  • Kim, Changsoo (National Institute of Environmental Research, Water Supply and Sewerage Research Division) ;
  • Park, Junwon (National Institute of Environmental Research, Water Supply and Sewerage Research Division) ;
  • Lee, Wonseok (National Institute of Environmental Research, Water Supply and Sewerage Research Division)
  • 정동환 (국립환경과학원 상하수도연구과) ;
  • 정현미 (국립환경과학원 상하수도연구과) ;
  • 조양석 (국립환경과학원 상하수도연구과) ;
  • 김은석 (국립환경과학원 상하수도연구과) ;
  • 김창수 (국립환경과학원 상하수도연구과) ;
  • 박준원 (국립환경과학원 상하수도연구과) ;
  • 이원석 (국립환경과학원 상하수도연구과)
  • Received : 2018.09.17
  • Accepted : 2018.11.21
  • Published : 2018.12.17
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Abstract

Total organic carbon (TOC) will replace chemical oxygen demand ($COD_{Mn}$) as an effluent water quality standard in public sewage treatment works (PSTWs) from 2021 in Korea. To ensure effective control of TOC in the effluent, investigation was carried out into TOC levels and sewage treatment operation factors in five target PSTWs using anaerobic-anoxic-aerobic ($A_2O$) processes, media, membrane, and sequencing batch reactor (SBR) technologies. TOC removal efficiencies appeared to be 93-96% on average. As a fraction of TOC, biodegradable dissolved organic carbon (BDOC) was reduced from 64% in the influent to 9% in the effluent in these PSTWs. During the investigation, biological treatment processes were applied flexibly for operation factors such as HRT, SRT, MLSS, F/M ratios and BOD volume loads, based on the influent characteristics and design conditions. As a result, we suggest efficient operating conditions in PSTWs by evaluating relationships between TOC removal and operation factors.

Keywords

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