化工进展2009，Vol.28Issue(8)：1473-1477,1484,6.
微生物代谢产物对膜生物反应器膜污染的影响
Impact of microorganism metabolites on membrane fouling in membrane bioreactor
摘要
Abstract
The influence of microorganism metabolites, such as soluble microbial products (SMP) and extracellular polymeric substances (EPS), on membrane fouling was examined during the operation of membrane bioreactor(MBR). The activated sludge samples were taken from a laboratory-scale MBR and used to investigate their filtration resistance in different phases. Results showed that the accumulated SMP and EPS in the MBR have a negative effect on membrane filtration. The SMP, especially those with molecular weight (Mw) of 3-10 kDa, are positively correlated to the pore-blocking resistance. The cake layer formation is the main factor resulting in membrane fouling, and is strongly affacted by the amount of EPS and the SMP with Mw >10 kDa. The major components of EPS in cake layer are proteins, polysaccharides and humic substances as analyzed by Fourier transform infrared spectroscopy (FTIR), while the dominant components in SMP are polysaccharides and humic substances.关键词
膜生物反应器/溶解性微生物代谢产物/胞外聚合物/膜污染Key words
membrane bioreactor (MBR)/soluble microbial products (SMP)/extracellular polymeric substances (EPS)/membrane fouling分类
资源环境引用本文复制引用
赵军,张海丰,王亮..微生物代谢产物对膜生物反应器膜污染的影响[J].化工进展,2009,28(8):1473-1477,1484,6.基金项目
天津市科技创新专项资金项目(06FZZDSH00900). （06FZZDSH00900）
