Tianjin Key Laboratory of Hollow Fiber Membrane Material and Membrane Process, Institute of Biological and Chemical Engineering, Tianjin Polytechnical University, Tianjin 300160, China.
Bioresour Technol. 2010 Nov;101(21):8046-50. doi: 10.1016/j.biortech.2010.05.074. Epub 2010 Jun 20.
The relationship between extracellular polymerase substances (EPS) and sludge characteristic were investigated by extraction and analysis of EPS in different size biomass and membrane fouling in an aerobic granule membrane bioreactor (GMBR). The results indicated that the contents of EPS, polysaccharides and proteins in large granules (particle diameter, d>0.45mm) were significantly lower than that in small granules (d<0.45mm) and flocculent sludge. In addition, the content of EPS in membrane fouling was more than that in suspended biomass. For flocculent sludge, the sedimentation and filtering performance decreased markedly as increasing EPS content. However, for granular sludge, there was no significant correlation between EPS content and sludge characteristics. Furthermore, application of aerobic granule can improve sludge filtering properties and delay the process of membrane fouling, as a result of better morphological structure and lower EPS content.
通过提取和分析不同粒径生物量中的胞外聚合物物质 (EPS) 和好氧颗粒膜生物反应器 (GMBR) 中的膜污染，研究了 EPS 与污泥特性之间的关系。结果表明，大颗粒（粒径 d>0.45mm）中的 EPS、多糖和蛋白质含量明显低于小颗粒（d<0.45mm）和絮状污泥。此外，膜污染中的 EPS 含量高于悬浮生物质。对于絮状污泥，随着 EPS 含量的增加，沉降和过滤性能显著下降。然而，对于颗粒污泥，EPS 含量与污泥特性之间没有显著的相关性。此外，好氧颗粒的应用可以改善污泥过滤性能，延缓膜污染过程，因为其具有更好的形态结构和更低的 EPS 含量。
