| 一种CANON工艺处理低氨氮废水的新模式 |
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| 引用本文： | 完颜德卿,袁怡,李祥,毕贞.一种CANON工艺处理低氨氮废水的新模式[J].环境科学,2017,38(3):1122-1129. |
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| 作者姓名： | 完颜德卿 袁怡 李祥 毕贞 |
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| 作者单位： | 苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009,苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009,苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009,苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境生物技术研究所, 苏州 215009 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0401108）；国家自然科学基金项目（51478284，51408387）；江苏省特色优势学科二期立项项目；江苏省水处理技术与材料协同创新中心项目；苏州科技学院科研基金项目青年项目（341410031）；苏州科技学院人才引进科研项目（331411202） |
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| 摘 要： | 利用上流式污泥床反应器,以出水复氧回流的方式快速启动CANON工艺,并研究了启动及运行过程特征.结果表明,以出水复氧进行回流的方式可以快速启动并稳定运行CANON工艺;在污泥体积分数为25%,进水NH_4~+-N为157 mg·L~(-1),HRT为2 h的条件下,经过50 d的稳定运行,总氮去除速率NRR从1.31 kg·(m~3·d)~(-1)逐渐升高到1.47 kg·(m~3·d)~(-1).复氧回流的方式有效地控制了反应器内溶解氧的量,使得DO0.01 mg·L~(-1),对系统中的NOB起到了良好的抑制效果,同时也为An AOB提供了一个良好的生长环境;通过控制回流量的大小可以精确地控制NO_2~-的产生速率,使得与NO_2~-消耗速率达到一个良好的平衡状态,避免了NO_2~-的积累及其硝化反应的发生.因此,复氧回流CANON工艺在运行的稳定性方面表现出了很大的优势,为CANON工艺处理低氨氮废水提供了一个新模式.
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| 关 键 词： | 厌氧氨氧化 全程自养脱氮工艺(CANON) 复氧回流 NOB的抑制 |
| 收稿时间： | 2016/9/26 0:00:00 |
| 修稿时间： | 2016/10/20 0:00:00 |
A New Model for the Treatment of Low Ammonia Nitrogen Wastewater by CANON Process |
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| WANYAN De-qing,YUAN Yi,LI Xiang and BI Zhen.A New Model for the Treatment of Low Ammonia Nitrogen Wastewater by CANON Process[J].Chinese Journal of Environmental Science,2017,38(3):1122-1129. |
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| Authors: | WANYAN De-qing YUAN Yi LI Xiang and BI Zhen |
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| Institution: | School of Environment 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 Environment 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 Environment 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 and School of Environment 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: | Automatic aeration and recirculation of effluent were used to start CANON process with up flow sludge bed reactor, and the start-up and operation characteristics of the process were studied. The results showed that the CANON process could be started quickly and stably by the method of reoxygenation reflux under the conditions of sludge volume fraction 25%, NH4+-N 157 mg·L-1, HRT 2 h. After 50 days of operation, the total nitrogen removal rate increased from 1.31 kg·(m3·d)-1 to 1.47 kg·(m3·d)-1; the reoxygenation reflux manner could effectively control the amount of dissolved oxygen in the reactor, resulting in DO<0.01 mg·L-1, which had a good inhibitory effect on the NOB in the system, and meanwhile provided a good growth environment for AnAOB; By controlling the reflux flow, the production rate of NO2- could be precisely controlled, reaching a good balance with NO2- consumption rates, and thus avoiding the accumulation of NO2- and occurrence of nitration reactions. Therefore, reoxygenation reflux CANON process showed a great advantage in the operation stability, which provided a new model for the start-up and stable operation of CANON process. |
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| Keywords: | ANAMMOX completely autotrophic nitrogen removal over nitrite(CANON) reoxygenation reflux NOB inhibition |
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