Study on Behavior of Organic, Nitrogen, and Phosphorus in the Sequencing Batch Reactor

연속회분식 반응기(Sequencing Batch Reactor)에서 유기물, 질소 및 인의 거동에 관한 연구

  • 한기백 (경주전문대학 환경공업과) ;
  • 박동근 (경주전문대학 환경공업과, 동서공과대학 환경공학과, 부산대학교 환경공학과)
  • Published : 1997.10.01

Abstract

In the study, we Investigated the behavior and removal efficiency of organics, nitrogen. phosphorus with operating conditions in SBRs. Substrate used was synthetic wastewater in which the ratio of $COD_{cr}$. : N : P was 100 : 12 : 2. The cycling the in SBRs was adjusted at 6 hours and 8 hours, and then certainly Included anaerobic and aerobic conditions. Also, for each cycling time. we performed 2 series of experiment simultaneously which was set up 10 days and 20 days as SRT. The removal efficiency of $COD_{cr}$. was over 97% in all operating conditions. In the 6 hours cycling time, the removal efficiency of $PO_4^{3-}-P$ reached almost 100% in steady state. And then we could observe a typical phonemena of phosphorus release and uptake, and the removal efficiency of N was 67%, Residual N source was almost TKN and most of the rest remained as $NO_2-N$. Also the difference in both SRTs was not observed practically. In the 8 hours cycling time, dissolution of sludge appeared. and, $PO_4^{3-}-P was not nearly removed but nitrogen was removed up to 75%, And the residual nitrogen was accumulated as $NO_2^--N$.

Keywords

Sequencing Batch Reactor;Cycling Time;Nitrification and Denitrification;Phosphorus Removal

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