| 污泥固体停留时间对实时控制生物脱氮SBR中亚硝酸盐积累的影响 |
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| 引用本文： | 吴昌永,彭永臻,王淑莹,李晓玲,王然登.污泥固体停留时间对实时控制生物脱氮SBR中亚硝酸盐积累的影响[J].中国化学工程学报,2011,19(3):512-517. |
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| 作者姓名： | 吴昌永 彭永臻 王淑莹 李晓玲 王然登 |
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| 作者单位： | 1. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China;
3. Key Laboratory of Beijing for Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100022, China |
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| 基金项目： | Supported by the National Key Technologies Research and Development Program of China during the Eleventh Five-year Plan Period(2006BAC19B03); the Project of Scientific Research Base and Scientific Innovation Platform of Beijing Municipal Education Commission(PXM2008_014204_050843; the State Key Laboratory of Urban Water Resource and Environment(HIT)(QAK201006) |
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| 摘 要： | In this study,four sequencing batch reactors(SBR),with the sludge retention time(SRT)of 5,10,20 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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| 关 键 词： | biological nitrogen removal nitrite accumulation real time control sludge retention time sequencing batch reactors |
| 收稿时间： | 2010-7-22 |
| 修稿时间： | 2010-7-22
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Effect of sludge retention time on nitrite accumulation in real-time control biological nitrogen removal sequencing batch reactor |
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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].Chinese Journal of Chemical Engineering,2011,19(3):512-517. |
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| Authors: | WU Changyong PENG Yongzhen WANG Shuying LI Xiaoling WANG Randeng |
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| Affiliation: | 1. Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China;
3. Key Laboratory of Beijing for Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | In this study, four sequencing batch reactors (SBR), with the sludge retention time (SRT) of 5, 10, 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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| Keywords: | biological nitrogen removal nitrite accumulation real time control sludge retention time sequencing batch reactors |
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