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A Simultaneous Removal of Organic, Nitrogen and Phosphorus According to the Distribution of Aeration Time in (AO)2 SBBR

(AO)2 연속 회분식 생물막 반응기에서 포기 시간 배분에 따른 유기물 및 질소와 인의 동시 제거에 관한 연구

  • Park Young-Seek (Department of Health & Environment, Daegu University) ;
  • Kim Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
  • 박영식 (대구대학교 보건과학부) ;
  • 김동석 (대구가톨릭대학교 환경과학전공)
  • Published : 2005.09.01

Abstract

This study was carried out to get more operational characteristics of Anoxic(anaerobic)-Oxic-Anoxic-Oxic $(AO)_2$ sequencing batch biofilm reactors (SBBRs) at the low TOC concentration, The operating time in anoxic (anaerobic) time to oxic time was I : I. Experiments were conducted to find the effects of the aeration time distribution on the organic matters and nutrients removal. Three lab-scale reactors were fed with synthetic wastewater based on glucose as carbon source. During studies, the operation mode was fixed. The first aeration time to the second aeration time in SBBR-I was 2 : 3, and those in SBBR-2 and SBBR-3 were I : 4 and 3 : 2, respectively. The organic removal efficiency didn't show large difference among three reactors of different aeration time distribution. However, from these study results, the optimum aeration time distribution in the first and the second aeration time for biological nutrient removal was shown as 3 : 2. The release of phosphorus was inhibited at the second non-aeration period because of the low TOC concentration and the nitrate produced by the nitrification at the first aeration period.

Keywords

(AO)2 SBBR;Aeration time;EBPR;DO;PH

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