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 membranebioreactor,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.
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.
出处
《环境科学》
CAS
CSCD
北大核心
2008年第6期1616-1620,共5页
Environmental Science
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
polyvinyl alcohol
non-woven
membrane fouling
extra-cellular polymeric substances
membrane bioreactor
statistical analysis
