Journal of Korean Society of Water Science and Technology (한국수처리학회지)

Korean Society of Water Science and Technology (한국수처리학회)
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Bioreduction Characteristics of Perchlorate in Raw Sewage

생하수의 퍼클로레이트 생분해 특성

  • Hong, Seong Hwan (Department of Civil and Environmental Engineering, Wonkwang University) ;
  • Choi, Hyeoksun (Department of Civil and Environmental Engineering, Wonkwang University)
  • 홍성환 (원광대학교 창의공과대학 토목환경공학과) ;
  • 최혁순 (원광대학교 창의공과대학 토목환경공학과)
  • Received : 2018.11.04
  • Accepted : 2018.12.20
  • Published : 2018.12.31
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Abstract

This research was done to investigate the bioreduction characteristics of perchlorate in raw sewage because sewage contains biodegradable organics and various microorganisms for biological perchlorate reduction. Two different types of sewage were tested for biological perchlorate reduction in the flasks. Sewage A was collected from the screening equipment and sewage B was collected from the primary settlement in the municipal wastewater treatment facilities. Perchlorate was completely reduced within 72hours from 8.2 and 10.4 mg/L in the sewage A and sewage B flask tests. When perchlorate and nitrate were added in sewage A, both perchlorate and nitrate were reduced. However, perchlorate and nitrate removal rates were 9.3% and 64.0% at 72hours in sewage B. Perchlorate reduction was significantly inhibited by high salinity(0.5% NaCl) in the sewage A and B. These results showed the sewage has potential for the biological perchlorate reduction in the sewage pipe.

Keywords

Acknowledgement

Supported by : 원광대학교

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