Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Behavior of perfluorinated compounds in advanced water treatment plant

고도 정수처리장에서의 과불화합물 거동

  • Lim, Chaeseung (Department of Biotechnology, University of Tokyo) ;
  • Kim, Hyungjoon (Water environment technology team, TSK Corporation) ;
  • Han, Gaehee (Water quality research center, Waterworks headquarters Daegu Metropolitan City) ;
  • Kim, Ho (Bio resource circulation center, Institute for Advanced engineering) ;
  • Hwang, Yunbin (Department of Environmental & Energy Engineering, Suwon University) ;
  • Kim, Keugtae (Department of Environmental & Energy Engineering, Suwon University)
  • 임채승 (도쿄대학교 응용생명공학과) ;
  • 김형준 (티에스케이코퍼레이션 물환경기술팀) ;
  • 한개희 (대구광역시 상수도사업본부 수질연구소) ;
  • 김호 (고등기술연구원 바이오자원 순환 센터) ;
  • 황윤빈 (수원대학교 환경에너지공학과) ;
  • 김극태 (수원대학교 환경에너지공학과)
  • Received : 2020.09.04
  • Accepted : 2020.09.23
  • Published : 2020.10.15
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Abstract

Adsorption by granule activated carbon(GAC) is recognized as an efficient method for the removal of perfluorinated compounds(PFCs) in water, while the poor regeneration and exchange cycles of granule active carbon make it difficult to sustain adsorption capacity for PFCs. In this study, the behavior of PFCs in the effluent of wastewater treatment plant (S), the raw water and the effluents of drinking water treatment plants (M1 and M2) located in Nakdong river waegwan watershed was monitored. Optimal regeneration and exchange cycles was also investigated in drinking water treatment plants and lab-scale adsorption tower for stable PFCs removal. The mean effluent concentration of PFCs was 0.044 0.04 PFHxS g/L, 0.000 0.00 PFOS g/L, 0.037 0.011 PFOA g/L, for S wastewater treatment plant, 0.023 0.073 PFHxS g/L, 0.000 0.00 PFOS g/L, 0.013 0.008 PFOA g/L for M1 drinking water treatment plant and 0.023 0.073 PFHxS g/L, 0.000 0.01 PFOS g/L, 0.011 0.009 PFOA g/L for M2 drinking water treatment plant. The adsorption breakthrough behaviors of PFCs in GAC of drinking water treatment plant and lab-scale adsorption tower indicated that reactivating carbon 3 times per year suggested to achieve and maintain good removal of PFASs. Considering the results of mass balance, the adsorption amount of PFCs was improved by using GAC with high-specific surface area (2,500㎡/g), so that the regeneration cycle might be increased from 4 months to 10 months even if powdered activated carbon(PAC) could be alternatives. This study provides useful insights into the removal of PFCs in drinking water treatment plant.

Keywords

References

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