MFC-MBR耦合系统中SMP与EPS特性的研究  

Investigation on SMP and EPS in membrane bioreactor combined with microbial fuel cells

作　　者：李慧[1] 田禹[1,2] 苏欣颖[1] 王翠娜[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《中国环境科学》2013年第1期49-55,共7页China Environmental Science

基　　金：国家自然科学基金项目(50978071);哈尔滨工业大学城市水资源与水环境国家重点实验室项目(2011TS01);国家创新研究群体(50821002)

摘　　要：将膜生物反应器与以剩余污泥为底物的微生物燃料电池结合建立了能够有效控制膜污染的MFC-MBR耦合系统,以传统MBR作为对照研究了MFC-MBR耦合系统内泥水混合液的溶解性微生物产物(SMP)与胞外聚合物(EPS)浓度、分子量分布及荧光特性的变化情况.结果表明与传统MBR相比耦合系统中SMP与TB-EPS浓度分别升高了8.5%与9.2%,而LB-EPS浓度则降低了47.9%,并且LB-EPS中芳香性蛋白质与腐植酸的浓度也显著降低.同时还考察了传统MBR与MFC-MBR耦合系统中膜污染情况,结果发现,在传统MBR中TMP达到30KPa所需时间为38d,而MFC-MBR耦合系统则为55d.说明MFC污泥回流能够有效减缓膜污染的发生.This study reported a novel strategy of integrating MFCs with a membrane bioreactor（MBR） for membrane fouling mitigation.The soluble microbial products（SMP） and extracellular polymeric substances（EPS） from the suspended sludge of MFC-MBR combined system and conventional MBR were analysed.Compared to the conventional MBR,the SMP and TB-EPS concentrations in the MFC-MBR combined system increased by 8.5% and 9.2% respectively.Conversely,the LB-EPS concentration decreased by 47.5%.In addition,the aromatic protein and humic acid in LB-EPS also decreased significantly.The membrane fouling was also investigated in the conventional MBR and MFC-MBR combined system.The time required to reach a TMP of 30 kPa was 38 days in the conventional MBR and 55 days in the MFC-MBR combined system,which indicated that the recycling of the sludge treated by MFC was able to alleviate membrane fouling.

关 键 词：MFC-MBR耦合系统 SMP EPS 膜污染 

分 类 号：X703.1[环境科学与工程—环境工程]