Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Reuse Possibility of By-pass Flow and Secondary Effluent using BAF

BAF를 이용한 2차 처리수의 재이용 가능성 및 강우시 하수처리장 월류수의 처리

  • An, J.H. (Department of Civil & Environmental Engineering, Korea University) ;
  • Park, J.B. (The Korean Intellectual Property Office) ;
  • Kim, S.W. (Department of Civil & Environmental Engineering, Korea University) ;
  • Park, J.H. (Department of Civil & Environmental Engineering, Korea University) ;
  • Ha, J.S. (Department of Civil & Environmental Engineering, Korea University) ;
  • Choi, E. (Department of Civil & Environmental Engineering, Korea University)
  • 안지훈 (고려대학교 토목환경공학과) ;
  • 박종복 (특허청) ;
  • 김성원 (고려대학교 토목환경공학과) ;
  • 박재홍 (고려대학교 토목환경공학과) ;
  • 하준수 (고려대학교 토목환경공학과) ;
  • 최의소 (고려대학교 토목환경공학과)
  • Received : 2004.12.07
  • Accepted : 2005.02.01
  • Published : 2005.03.30
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Abstract

The laboratory and pilot scale BAFs (biological aerated filters) were operated with 0.3 hr to 1.1 hr EBCT(empty bed contact time) at a maximum filtration rate of $472m^3/m^2/day$ as a treatment method for reuse of secondary effluent and by-pass flow in this study. The effluent BOD and SS were generally 3.5 to 5 mg/L and 2 to 3 mg/L, respectively with 2ndary effluent, but the SS concentrations increased to 4 to 8 mg/L with the increased flow rates of by-pass flow. Potential nitrification rates were very high, but the nitrogen removal efficiencies were low due to the limited carbon sources. Bypass of a part of primary effluent seemed to be desirable to increase the nitrogen removal. Disinfection must be furnished for the reuse of BAF effluent.

Keywords

Acknowledgement

Grant : 하수처리장개량 및 개선방안의 연구

Supported by : 환경부

References

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