Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Comparison of N and P Removal Characteristics by the Variation of Non-aeration Time in A2O SBBR

A2O SBBR에서 비포기 시간 배분에 따른 질소-인 제거 특성 비교

  • Park, Young-Seek (Department of Health & Environment Daegu University) ;
  • Jeong, No-Sung (Department of Environmental Science, Catholic University of Daegu) ;
  • Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
  • 박영식 (대구대학교 보건과학부) ;
  • 정노성 (대구가톨릭대학교 환경과학과) ;
  • 김동석 (대구가톨릭대학교 환경과학과)
  • Published : 2007.07.30
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Abstract

Laboratory scale experiments were conducted to investigate the removal characteristics of nitrogen and phosphorus in two sequencing batch biofilm reactors (SBBRs). SBBR1 had a short first non-aeration period and SBBR2 had a long first non-aeration period. The removal characteristics of nitrogen and phosphorus in each SBBR were precisely observed according to the variation of influent TOC concentration, and the operation control parameters (pH, DO concentration, ORP) in each reactor were measured. In biological nitrogen removal, there was little difference between SBBR1 and SBBR2 and the nitrogen removal efficiencies were very low. The nitrogen and phosphorus removal characteristics in high influent TOC concentration were different from those in low TOC. Nitrogen removals by simultaneous nitrification/denitrification (SND) were occurred in both SBBR1 and SBBR2. The P removal in SBBR1 was superior to that in SBBR2. The second P release was observed in SBBR1 which had long second non-aeration period.

Keywords

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