Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Contactor Coupled Sequencing Batch Reactor for Nitrogen Removal

접촉조 결합형 연속회분식반응조를 이용한 질소제거

  • Nam, Se-Yong (Department of Environmental Engineering, Hankyong National University) ;
  • Lee, Sang-Min (Department of Environmental Engineering, Kongju National University) ;
  • Kim, Dong-Wook (Department of Environmental Engineering, Kongju National University) ;
  • Seo, Yong-Chan (Department of Environmental Engineering, Sangji University)
  • 남세용 (한경대학교 환경공학과) ;
  • 이상민 (공주대학교 환경공학과) ;
  • 김동욱 (공주대학교 환경공학과) ;
  • 서용찬 (상지대학교 환경공학과)
  • Published : 2005.11.30
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Abstract

A contactor coupled sequencing batch reactor composed of pre-anoxic contact zone and intermittently aerated zone was proposed and operated for nitrogen removal. Emphasis was placed on the fact that the contactor can be operated in a rapid reaction mode that results In biological uptake but incomplete metabolism of organic matter. Consequently, 61.2% of the sewage SCOD was adsorbed to activated sludge by 30-minute contact reaction. The specific uptake of organic matter was 22.3 mg SCOD/g MLVSS that enhanced the denitrification efficiency in the following denitrification stage. The removal efficiencies of the organic matter(SCOD) and the total nitrogen(T-N) were 86% and about 60% at the TCOD/TKN ratio as low as 6.0, respectively.

접촉부와 간헐포기부로 구성된 접촉조 결합형 연속회분식반응조를 질소제거를 위해 제안하고 실험적으로 연구하였다. 짧은 체류시간의 접촉반응을 통해 활성슬러지 플록에 유기물질이 생물흡착되지만 불완전 대사가 진행된다는데 근거를 두고 있다. 결과적으로 실하수의 경우 유입 유기물질의 61.2%가 접촉반응 30분 만에 흡착되었다. 유기물질의 비흡착량은 22.3 mg SCOD/g MLVSS였으며, 이는 후속되는 공정에서 탈질효율의 향상에 기여하였다. 연속운전을 통한 전체적인 처리효율은 TCOD/TKN 비가 6이하의 낮은 조건에서도 SCOD 및 T-N 제거율이 각 86%와 60%를 유지하였다.

Keywords

References

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