화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.27, No.3, 925-929, March, 2010
DOI10.1007/s11814-010-0122-x  Export Citation
Optimal strategies of fill and aeration in a sequencing batch reactor for biological nitrogen and carbon removal
Moo Hwan Cho†, Jintae Lee, Joon Ha Kim1, and Henry C. Lim2
  • School of Display and Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Korea
  • 1Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea
  • 2Department of Chemical Engineering and Material Science, University of California, Irvine, CA 92697, USA
E-mail:
A modified version of the IAWQ activated sludge model No. 1 (ASM 1) is adopted for the simulation of a sequencing batch reactor (SBR) to optimize the removal of nitrogen (T-N) and organic matters (COD) from wastewater. Since the removal of nitrogen requires both aerobic nitrification and anaerobic denitrification, we seek to find the optimal strategies of substrate fill and aeration. Substrate filling strategy critically influences the removal efficiency of T-N and COD; one fast discrete fill in the beginning of a cycle leads to the best result, while a slow continuous fill results in poor nitrification. In addition, the total aeration time is more important for the removal efficiency than the aeration frequency. A short aeration is beneficial for T-N removal, while a long aeration is beneficial for COD removal as expected. As a result, there is an optimal condition of aeration for the simultaneous removal of T-N and COD.
Keywords:Wastewater Treatment;Nitrogen Removal;Sequential Batch Reactor;Optimization Strategy
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