| 好氧颗粒污泥膜生物反应器脱氮特性 |
| 摘要点击 2477 全文点击 1356 投稿时间：2006-09-09 修订日期：2006-11-08 |
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| 中文关键词 好氧颗粒污泥 膜生物反应器 同步硝化反硝化 粒径分布 |
| 英文关键词 aerobic granular sludge membrane bioreactor simultaneous nitrification and denitrification(SND) size distribution |
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| 中文摘要 |
| 好氧颗粒污泥膜生物反应器（GMBR）连续运行71 d，对模拟生活污水表现出良好的有机物去除及同步硝化反硝化(SND)能力.进水TOC浓度为56.8～132.6mg/L时，膜出水TOC去除率为84.7%～91.9%；进水氨氮浓度为28.1～38.4mg/L时，稳定运行阶段氨氮去除率为85.4%～99.7%，总氮去除率为41.7%～78.4%.结合反应器中污泥生长形态，对不同粒径污泥的同步硝化反硝化研究表明，好氧条件下絮状污泥几乎没有反硝化能力，SND能力来源于颗粒污泥，并且随着污泥粒径的增大，反硝化速率以及总氮去除效率提高.通过扫描电镜对颗粒污泥外观以及沿传质方向剖面内部特征的观察分析，对颗粒污泥同步硝化反硝化的作用过程进行了探讨. |
| 英文摘要 |
| An aerobic granular sludge membrane bioreactor(GMBR) had been stably operated for 71 days, and it showed good organics removal and simultaneous nitrification and denitrification(SND) performances. TOC, ammonium and total nitrogen removal efficiencies of GMBR remained 84.7%～91.9%, 85.4%～99.7% and 41.7%～78.4% respectively as influent TOC were 56.8～132.6mg/L and ammonium nitrogen were 28.1～38.4mg/L. Moreover, further batch tests of different size sludge revealed that floclike sludge nearly had not SND ability, the SND performances of GMBR was mostly come from granular sludge, and denitrification rate and total nitrogen removal efficiencies under aerobic condition increased with sludge size increased. Analyzing the morphology and section characteristics of granular sludge under scan electron microscope, the SND process was also described. |
