| 影响MBR脱氮效率的因素研究 |
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| 引用本文： | 郑祥,刘俊新.影响MBR脱氮效率的因素研究[J].环境科学学报,2005,25(10):1325-1329. |
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| 作者姓名： | 郑祥 刘俊新 |
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| 作者单位： | 1. 中国科学院生态环境研究中心,北京,100085;哈尔滨工业大学市政与环境工程学院,哈尔滨,150090
2. 中国科学院生态环境研究中心,北京,100085 |
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| 基金项目： | 国家高技术研究发展计划（863）项目（No.2002AA601022）. |
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| 摘 要： | 采用重力出流式膜生物反应器,考察了采用2种脱氮运行方式对生活污水脱氮的效果,同时对影响脱氮效率的相关因素进行了分析．研究结果表明,C／N是影响A／O与同步硝化反硝化（SND）2种运行方式脱氮效率最关键的因素．当C／N比小于12时,A／O方式的脱氮效率高于SND;随着C／N的升高,A／O与SND脱氮效率的差距逐渐缩小．对于A／O运行方式,在低C／N条件下可以通过提高回流比与增加缺氧段的HRT来提高系统的总氮去除率．而对于SND运行方式,好氧反硝化的完成是建立在有足够有机物作碳源的基础上,此时,DO的控制就成为提高脱氮效率的关键因素．
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| 关 键 词： | 膜-生物反应器 脱氮 同步硝化反硝化 |
| 文章编号： | 0253-2468(2005)10-1325-05 |
| 收稿时间： | 05 8 2005 12:00AM |
| 修稿时间： | 07 22 2005 12:00AM |
Nitrogen removal in A/O and SND processes using MBR |
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| ZHENG Xiang and LIU Junxin.Nitrogen removal in A/O and SND processes using MBR[J].Acta Scientiae Circumstantiae,2005,25(10):1325-1329. |
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| Authors: | ZHENG Xiang and LIU Junxin |
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| Institution: | 1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085; 2. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090 |
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| Abstract: | A labor-scale experiment was carried out to compare nitrogen removal by a submerged membrane bioreactor (MBR) in the A/O and SND processes. The results indicated that nitrogen removal was controlled mainly by the value of C/N of the influent. Nitrogen Removal in the A/O was better than in the SND at the same ratio of C/N. However, the role of C/N on denitrification was relatively significant in the SND process. The impact of MLSS internal recycling ratio and HRTanoxic on denitrification was observed only at some C/N levels in the A/O process. As C/N was at high level, denitrification became increasingly dependent on DO at SND process. |
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| Keywords: | denitrification MBR simultaneous nitrification and denitriilcation |
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