| 气升装置对厌氧氨氧化反应器脱氮效能的影响 |
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| 引用本文： | 李祥,张大林,黄勇,陈宗姮,袁怡.气升装置对厌氧氨氧化反应器脱氮效能的影响[J].环境科学,2014,35(9):3449-3454. |
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| 作者姓名： | 李祥 张大林 黄勇 陈宗姮 袁怡 |
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| 作者单位： | 苏州科技学院环境科学与工程学院, 苏州 215009;苏州科技学院环境生物技术研究所, 苏州 215009;苏州科技学院环境科学与工程学院, 苏州 215009;苏州科技学院环境生物技术研究所, 苏州 215009;苏州科技学院环境科学与工程学院, 苏州 215009;苏州科技学院环境生物技术研究所, 苏州 215009;苏州科技学院环境科学与工程学院, 苏州 215009;苏州科技学院环境生物技术研究所, 苏州 215009;苏州科技学院环境科学与工程学院, 苏州 215009;苏州科技学院环境生物技术研究所, 苏州 215009 |
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| 基金项目： | 国家自然科学基金项目（51008202）；江苏省环保厅重大项目（201104） |
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| 摘 要： | 通过接种厌氧氨氧化污泥研究了气升回流装置在提高进水基质浓度以提高反应器氮负荷过程中对反应器脱氮效能的影响.结果表明,在气升室中利用厌氧氨氧化反应产生的氮气作为动力可以实现出水自动循环.随着反应器脱氮效能的提高,气升室回流量也逐步增加,能够有效稀释进水基质浓度,缓解其对厌氧氨氧化菌的抑制.经过183 d运行,进水NH+4-N、NO-2-N质量浓度分别提高至700 mg·L-1和840 mg·L-1,出水NH+4-N和NO-2-N质量浓度最高达到46.3 mg·L-1和53.21mg·L-1,氮去除速率稳定在28.3 kg·(m3·d)-1左右.说明气升装置所形成的自回流系统能够有效改善传统厌氧氨氧化反应器运行过程中高基质浓度抑制的问题,同时减少外置回流泵的动力消耗,是一种经济有效的措施.
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| 关 键 词： | 厌氧氨氧化 脱氮效能 气升装置 高基质浓度 抑制 |
| 收稿时间： | 2014/1/11 0:00:00 |
| 修稿时间： | 2014/3/12 0:00:00 |
Effect of Gas-lift Device on Nitrogen Removal Efficiency of ANAMMOX Reactor |
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| LI Xiang,ZHANG Da-lin,HUANG Yong,CHEN Zong-heng and YUAN Yi.Effect of Gas-lift Device on Nitrogen Removal Efficiency of ANAMMOX Reactor[J].Chinese Journal of Environmental Science,2014,35(9):3449-3454. |
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| Authors: | LI Xiang ZHANG Da-lin HUANG Yong CHEN Zong-heng and YUAN Yi |
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| Affiliation: | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China |
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| Abstract: | The effect of air-lift device on the nitrogen removal efficiency of ANAMMOX reactor was studied by increasing the substrate concentration to improve nitrogen load rate and inoculate ANAMMOX sludge. The results showed that the effluent recirculation was achieved by using nitrogen gas produced from the ANAMMOX process as power in the air-lift room. With the increase of nitrogen removal rate, the rate of effluent recirculation was increased, which diluted influent substrate concentration and alleviated the inhibition of ANAMMOX bacteria,. After 183 d operation, the effluent NH4+-N and NO2--N concentrations were increased to 46.3 mg ·L-1and 53.21 mg ·L-1, and the nitrogen removal rate was kept stable at 28.3 kg ·(m3 ·d)-1, when the influent NH4+-N and NO2--N concentrations were increased to 700 mg ·L-1 and 840 mg ·L-1, respectively. The effluent recirculation system formed by gas-lift devices is an economic and effective solution to the inhibition caused by high substrate concentration in traditional reactor, meanwhile, the power consumption of the external reflux pump was reduced. |
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| Keywords: | ANAMMOX nitrogen removal efficiency gas-lift device high substrate concentration inhibition |
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