Stability and reproducibility of low-temperature anaerobic biological wastewater treatment

被引:28
作者
Collins, G
Mahony, T
O'Flaherty, V
机构
[1] Natl Univ Ireland Univ Coll Galway, Dept Microbiol, Microbial Ecol Lab, Galway, Ireland
[2] Natl Univ Ireland Univ Coll Galway, Environm Change Inst, Galway, Ireland
关键词
low-temperature anaerobic digestion; expanded granular sludge bed (EGSB); specific methanogenic activity; stability; reproducibility;
D O I
10.1111/j.1574-6941.2005.00034.x
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The reproducibility of low-temperature anaerobic biological wastewater treatment trials was evaluated. Two identical anaerobic expanded granular sludge bed bioreactors were used to treat synthetic volatile fatty acid-based industrial wastewater under ambient conditions (18-20 degrees C) and to investigate the effect of various environmental perturbations on reactor performance and microbial community dynamics, which were assessed by chemical oxygen demand removal or effluent volatile fatty acid determination and terminal restriction fragment length polymorphism analysis, respectively. Methanogenic activity was monitored using specific methanogenic activity assays. Reactor performance and microbial community dynamics were each well replicated between Reactor 1 and Reactor 2. Archaeal dynamics, in particular, were associated with reactor operating parameters. Terminal restriction fragment length polymorphism data suggested dynamic acetoclastic and hydrogenophilic methanogenic populations and were in agreement with temporal specific methanogenic activity data. Putative psychrophilic populations were observed in anaerobic bioreactor sludge for the first time.
引用
收藏
页码:449 / 458
页数:10
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