Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Evaluation of perfluorinated compounds removal performance and automatic regeneration performance by activated carbon adsorption process

활성탄 흡착공정에 의한 과불화화합물의 제거 및 활성탄 자동재생 성능 평가

  • Jung, Jinho (Department of Environmental Engineering, University of Seoul) ;
  • Lee, Sanghoon (Wintec glovis Co., Ltd.) ;
  • Yun, Wonsang (Department of Environmental Engineering, Yeungnam University) ;
  • Choi, Daehee (Department of Environmental Engineering, Yeungnam University) ;
  • Jung, Jinyoung (Department of Environmental Engineering, Yeungnam University) ;
  • Han, Ihnsup (Department of Environmental Engineering, University of Seoul)
  • 정진호 (서울시립대학교 환경공학부) ;
  • 이상훈 ((주)윈텍글로비스) ;
  • 윤원상 (영남대학교 환경공학과) ;
  • 최대희 (영남대학교 환경공학과) ;
  • 정진영 (영남대학교 환경공학과) ;
  • 한인섭 (서울시립대학교 환경공학부)
  • Received : 2022.01.28
  • Accepted : 2022.04.12
  • Published : 2022.04.15
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Abstract

In this study, the removal efficiency of PFCs(perfluorinated compounds) in the GAC(granule activated carbon) process based on the superheated steam automatic regeneration system was investigated in laboratory scale and pilot-scale reactor. Among PFCs, PFHxS(perfluorohexyl sulfonate) was most effectively removed. The removal efficiency of PFCs was found to be closely related to the EBCT, and the removal efficiencies of PFOA(perfluorooctanoic acid), PFOS(perfluorooctyl sulfonate), and PFHxS were 43.7, 75, and 100%, respectively, under the condition of EBCT of 6 min. Afterward, PFOA, PFOS, and PFHxS exhibited the earlier breakthrough time in the order. After that, GAC was regenerated, and the removal efficiency of the PFCs before and after regeneration was compared. As a result, it was shown that the PFCs removal efficiency in the regenerated GAC process were higher, and that of PFOA was improved to 75%. The findings of this study indicate the feasibility of the superheated steam automatic regeneration system for the stable removal of the PFCs, and it was verified that this technology can be applied stably enough even in field conditions.

Keywords

Acknowledgement

본 연구는 환경부의 재원을 받아 한국환경산업기술원의 지원으로 진행한 "녹색혁신기업 성장지원 프로그램 사업(과제번호 : 2020003170006)"결과물입니다.

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