Filamentous granular sludge bulking in a laboratory scale UASB reactor

被引：48
|
作者：
Li, Jinye [1 ]
Hu, Baolan [1 ]
Zheng, Ping [1 ]
Qaisar, Mahmood [1 ]
Mei, Lingling [2 ]
机构：
[1] Zhejiang Univ, Dept Environm Engn, Hangzhou 310029, Zhejiang, Peoples R China
[2] Zhejiang Provincial Ctr Dis Prevent & Control, Hangzhou 310009, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 09期
关键词：
filamentous bacteria; bulking; granular sludge; UASB;
D O I：
10.1016/j.biortech.2007.08.005
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Filamentous bulking was observed in a lab scale upflow anaerobic sludge blanket (UASB) reactor. Granules failed to settle normally and disintegrated. The characteristics of the granules in structure and microbial composition during the granulation process were investigated by means of scanning electron microscopy (SEM) and denaturing gradient gel electrophoresis (DGGE) technique. Granules with high porosity instead of compact ones were developed in the reactor and Methanosaeta concilii and Methanobacterium formicicum were identified as the predominant methanogens present in granules. The excess growth of the filamentous bacteria could be the contributing factor causing floatation and disintegration. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3431 / 3438
页数：8
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