Effect of Sludge Retention Time on Nitrite Accumulation in Real-time Control Biological Nitrogen Removal Sequencing Batch Reactor

吴昌永; 彭永臻; 王淑莹; 李晓玲; 王然登

doi:10.1016/S1004-9541(11)60014-1

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Effect of Sludge Retention Time on Nitrite Accumulation in Real-time Control Biological Nitrogen Removal Sequencing Batch Reactor

催化、动力学与反应工程 | Updated：2026-01-06

- Effect of Sludge Retention Time on Nitrite Accumulation in Real-time Control Biological Nitrogen Removal Sequencing Batch Reactor
- Chinese Journal of Chemical Engineering Vol. 19, Issue 3, Pages: 512-517(2011)
- Affiliations：
  
  1. School of Municipal and Environmental Engineering, Harbin Institute of Technology,Harbin,China,150090
  2. Key Laboratory of Beijing for Water Environmental Recovery Engineering, Beijing University of Technology,Beijing,China,100022
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(11)60014-1
  CLC：
- Published：2011
- Accepted：
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WU Changyong, PENG Yongzhen, WANG Shuying, LI Xiaoling, WANG Randeng. Effect of Sludge Retention Time on Nitrite Accumulation in Real-time Control Biological Nitrogen Removal Sequencing Batch Reactor[J]. Chin.J.Chem.Eng., 2011, 19(3): 512-517.
DOI：

WU Changyong, PENG Yongzhen, WANG Shuying, LI Xiaoling, WANG Randeng. Effect of Sludge Retention Time on Nitrite Accumulation in Real-time Control Biological Nitrogen Removal Sequencing Batch Reactor[J]. Chin.J.Chem.Eng., 2011, 19(3): 512-517. DOI： 10.1016/S1004-9541(11)60014-1.

摘要

Abstract

In this study

four sequencing batch reactors(SBR)

with the sludge retention time(SRT)of 5

20 and 40 d

were used to treat domestic wastewater

and the effect of SRT on nitrite accumulation in the biological nitrogen removal SBR was investigated.The real-time control strategy based on online parameters

such as pH

dissolved oxygen(DO)and oxidation reduction potential(ORP)

was used to regulate the nitrite accumulation in SBR. The model-based simulation and experimental results showed that with the increase of SRT

longer time was needed to achieve high level of nitritation.In addition

the nitrite accumulation rate(NAR)was higher when the SRT was relatively shorter during a 112-day operation.When the SRT was 5 d

the system was unstable with the mixed liquor suspended solids(MLSS)decreased day after day.When the SRT was 40 d

the nitrification process was significantly inhibited.SRT of 10 to 20 d was more suitable in this study.The real-time control strategy combined with SRT control in SBR is an effective method for biological nitrogen removal via nitrite from wastewater.

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