Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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A Study on the Operation Condition for Carbon-Nitrogen Removal in Wastewater and Sludge Reduction using PVA-gel Immobilized Microorganism

PVA-gel 미생물 고정화 담체를 이용한 고도하수처리 및 슬러지 감량화 운전조건 연구

  • 이진숙 (서울시립대학교 환경공학부) ;
  • 박형완 (서울시립대학교 환경공학부) ;
  • 남덕현 (서울시립대학교 환경공학부) ;
  • 박철휘 (서울시립대학교 환경공학부) ;
  • 정인호 (서울시립대학교 환경공학부) ;
  • 유영관 (Enviro(주))
  • Received : 2006.08.23
  • Accepted : 2006.12.14
  • Published : 2006.12.15
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Abstract

The carbon and nitrogen removal process using PVA-gel (Polyvinyl Alcohol) immobilized microorganisms was studied. The process has been operated under diverse process conditions for 12 months. The process consists of denitrification with internal recycle of 300%, nitrification, aerobic digestion reactors and settling tank. Nitrificatoin and nitrogen removal efficiency according to gel packing ratio and temperature were studied. Yield for Heterotrophs ($Y_H$), decay coefficient for Heterotrophs($b_H$) in aerobic digestion reactor were determined to seize sludge reduction mechanism and compared with typical data of activated sludge process. Then SRT in aerobic digestion reactor was determined on an experimental basis and sludge reduction efficiency was calculated. The process was implemented successfully with sludge reduction efficiency of 92.0~98.5% on a basis of biomass.

Keywords

References

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