[好氧颗粒污泥膜生物反应器中氮去除特性]

[Characteristics of nitrogen removal in aerobic granular sludge membrane bioreactor].

作者信息

Wang Jing-Feng, Wang Xuan, Ji Min, Lu Shan, Yang Zao-Yan, Li Jun-Wen

机构信息

Institute of Hygiene and Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China.

出版信息

Huan Jing Ke Xue. 2007 Mar;28(3):528-33.

PMID:17633628

Abstract

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 - 132.6 mg/L and ammonium nitrogen were 28.1 - 38.4 mg/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.

摘要

一个好氧颗粒污泥膜生物反应器（GMBR）已稳定运行71天，并且它展现出良好的有机物去除以及同步硝化反硝化（SND）性能。当进水总有机碳（TOC）为56.8 - 132.6毫克/升且氨氮为28.1 - 38.4毫克/升时，GMBR的TOC、铵和总氮去除效率分别保持在84.7% - 91.9%、85.4% - 99.7%和41.7% - 78.4%。此外，对不同大小污泥的进一步批次试验表明，絮状污泥几乎没有SND能力，GMBR的SND性能主要来自颗粒污泥，并且好氧条件下的反硝化速率和总氮去除效率随着污泥尺寸的增加而提高。通过扫描电子显微镜分析颗粒污泥的形态和截面特征，也对SND过程进行了描述。