| 连续流反应器短程硝化的快速启动与维持机制 |
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| 引用本文： | 吴鹏,张诗颖,宋吟玲,徐乐中,沈耀良.连续流反应器短程硝化的快速启动与维持机制[J].环境科学,2016,37(4):1472-1477. |
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| 作者姓名： | 吴鹏 张诗颖 宋吟玲 徐乐中 沈耀良 |
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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;江苏省水处理技术与材料协同创新中心, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;江苏省水处理技术与材料协同创新中心, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;江苏省水处理技术与材料协同创新中心, 苏州 215009;苏州科技大学环境科学与工程学院, 苏州 215009;江苏省水处理技术与材料协同创新中心, 苏州 215009;江苏省环境科学与工程重点实验室, 苏州 215009 |
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| 基金项目： | 国家自然科学基金项目(51578353); 江苏省高校自然科学研究重大项目(12KJA610002); 苏州市环境保护科技项目(B20130502); 江苏高校优势学科建设工程项目; 环境工程江苏省重点专业类项目; 苏州科技学院科研基金青年项目(XKQ201504) |
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| 摘 要： | 如何快速稳定地启动短程硝化工艺对低C/N比废水的处理具有十分重要的实际应用价值.针对城市污水厂以连续流工艺为主的现状,故对连续流反应器短程硝化的快速启动与维持进行研究.结果表明,利用间歇曝气,依次控制3个阶段的停/曝时间(15 min/45 min、45 min/45 min和30 min/30 min),连续流反应器经过60 d左右的运行,可以成功实现短程硝化的快速启动.控制停/曝时间为30 min/30 min,进水氨氮浓度为50或100 mg·L~(-1)时,亚硝化率分别可达90%或95%.另外,间歇曝气有利于抑制硝化菌(NOB)的活性,而缩短水力停留时间(HRT)可淘洗出NOB,两者结合可以更好地维持短程硝化.
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| 关 键 词： | 连续流反应器 短程硝化 低C/N比污水 间歇曝气 |
| 收稿时间： | 2015/11/9 0:00:00 |
| 修稿时间： | 2015/11/29 0:00:00 |
Quick Start-up and Sustaining of Shortcut Nitrification in Continuous Flow Reactor |
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| WU Peng,ZHANG Shi-ying,SONG Yin-ling,XU Yue-zhong and SHEN Yao-liang.Quick Start-up and Sustaining of Shortcut Nitrification in Continuous Flow Reactor[J].Chinese Journal of Environmental Science,2016,37(4):1472-1477. |
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| Authors: | WU Peng ZHANG Shi-ying SONG Yin-ling XU Yue-zhong and SHEN Yao-liang |
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| Institution: | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China;School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China;Jiangsu Key Laboratory of Environmental Science and Engineering, Suzhou 215009, China |
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| Abstract: | How to achieve fast and stable startup of shortcut nitrification has a very important practical value for treatment of low C/N ratio wastewater. Thus, the quick start-up and sustaining of shortcut nitrification were investigated in continuous flow reactor targeting at the current situation of urban wastewater treatment plant using a continuous flow process. The results showed that quick start-up of shortcut nitrification could be successfully achieved in a continuous flow reactor after 60 days' operation with intermittent aeration and controlling of three stages of stop/aeration time (15 min/45 min, 45 min/45 min and 30 min/30 min). The nitrification rates could reach 90% or 95% respectively, while influent ammonia concentrations were 50 or 100 mg ·L-1 with stop/aeration time of 30 min/30 min. In addition, intermittent aeration could inhibit the activity of nitrite oxidizing bacteria (NOB), while short hydraulic retention time (HRT) may wash out NOB. And a combined use of both measures was beneficial to sustain shortcut nitrification. |
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| Keywords: | continuous flow reactor shortcut nitrification low C/N ratio wastewater intermittent aeration |
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