| 胞外聚合物对MBR中改性无纺布过滤性能的影响 |
| 摘要点击 2541 全文点击 1229 投稿时间：2007-06-28 修订日期：2007-09-24 |
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| 中文关键词 聚乙烯醇 无纺布 膜生物反应器 胞外聚合物 膜污染 统计分析 |
| 英文关键词 polyvinyl alcohol non-woven membrane fouling extra-cellular polymeric substances membrane bioreactor statistical analysis |
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| 中文摘要 |
| 采用统计分析方法研究了胞外聚合物(extra-cellular polymeric substances, EPS)对浸渍式膜生物反应器(submerged membrane bioreactor, SMBR)中聚乙烯醇改性聚丙烯无纺布过滤性能的影响.结果表明,无纺布膜组件表面污泥的溶解性EPS(soluble EPS, EPSS)、EPSS组成(protein/carbohydrate, P/C)以及相对疏水性(relative hydrophobicity, RH)对膜的过滤性能有显著影响,与膜污染阻力的皮尔逊相关系数(Rp)分别为:0.868、0.840、0.890；改性无纺布膜组件能有效抑制EPSS的吸附、降低EPSS组分中P/C的比率、减少活性污泥的沉积.表明聚丙烯无纺布通过亲水改性后,过滤性能得到明显改善,表现出一定的耐污染性. |
| 英文摘要 |
| The effect of extra-cellular polymeric substances (EPS) on filtration of polyvinyl alcohol modified polypropylene non-woven in submerged membrane bioreactor (SMBR) was investigated by statistical method. The results show that soluble extra-celluler polymeric substances (EPSS) of activated sludge on the non-woven modules surface, components(protein/carbohydrate, P/C) of EPSS and relative hydrophobicity (RH) have a significant influence on filtration performance of module B, the Pearson's correlation coefficient (Rp) related to membrane fouling resistance are 0.868，0.840，0.890, respectively. Modified module can effectively restrict the adsorption of EPSS, can reduce the ratio of P/C in EPSS and can decrease the accumulation of activated sludge. After hydrophilic modification of non-woven, the filtration performance is improved obviously and the un-fouling performance is increased. |
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