| 改进的MBR对渗滤液的脱氮机理分析 |
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| 引用本文： | 宇鹏,黄萱.改进的MBR对渗滤液的脱氮机理分析[J].工业安全与环保,2012,38(5):11-14. |
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| 作者姓名： | 宇鹏 黄萱 |
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| 作者单位： | 1. 广西师范学院资源与环境科学学院,北部湾环境演变与资源利用省部共建教育部重点实验室 南宁,530001
2. 武汉循环经济研究院 武汉430081 |
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| 摘 要： | 改进的MBR对渗滤液的TN和NH3-N平均去除率分别达72.98%和90.1%。试验现象和数据表明,同步硝化反硝化是TN和NH3-N去除的最主要原因。同步硝化反硝化的发生在于3个方面:①膜的截留作用能使世代时间较长的硝化菌和反硝化菌富集;②在MBR内,废水在时间顺序上和空间位置上反复经历缺氧、好氧环境;③有利的操作条件,如维持MBR内MLSS为8 500 mg/L左右、温度为22~30℃、pH值为7.0~7.5、升流区的DO为2~2.5 mg/L等。
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| 关 键 词： | 渗滤液 膜生物反应器 脱氮 |
Analysis of Mechanism of Leachate Nitrogen Removal by Improved Membrane Bioreactor |
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| YU Peng
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HUANG Xuan.Analysis of Mechanism of Leachate Nitrogen Removal by Improved Membrane Bioreactor[J].Industrial Safety and Dust Control,2012,38(5):11-14. |
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| Authors: | YU Peng HUANG Xuan |
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| Institution: | 1.College of Resources and Environment Science,Guangxi Teachers Education University,Key Laboratoryof Beibu Gulf Environment Change and Resources Use,Ministry of Education Nanning 530001) |
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| Abstract: | The improved membrane bioreactor is applied to treat leachate and the average removal rate of TN and NH3-N can reach 72.98% and 90.1% respectively.The experiment indicates that simultaneous nitrification and denitrification(SND) is the major reason for TN and NH3-N removal,which is shown in three facets:①membrane interception can enrich nitrifying bacteria and denitrifying bacteria with longer generation time;②in this MBR,wastewater continuously circulates through anoxic and aerobic conditions in space position and sequence of time;③operation conditions favorable for SND are maintained in MBR,such as MLSS about 8 500 mg/L,temperature ranging from 22 ℃ to 30 ℃,pH from 7.0 to 7.5 and DO from 2 to 2.5 mg/L in up-flow zone. |
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| Keywords: | leachate membrane bioreactor nitrogen removal |
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