电耦合膜生物反应器中膜污染控制的研究进展

Research progress of membrane fouling control in electrically coupled membrane bioreactor

针对膜生物反应器(MBR)长期运行过程中的膜污染问题,阐述了MBR膜污染的成因及影响因素,分析了电耦合膜生物反应器(EMBR)减缓膜污染的机理,介绍了导电膜耦合EMBR和自生电场对膜污染的抑制作用。分析表明:EMBR可以通过电渗、电泳、电氧化、群体淬灭等电化学作用原位控制膜污染;微生物燃料电池(MFC)的自生电场应用于EMBR,在减缓膜污染的同时以电能的形式回收部分能量;导电膜的应用优化了EMBR结构,自生电场的MFC-MBR耦合工艺具有较好的应用前景。

In view of the problem of membrane fouling in the long-term operation of membrane bioreactor(MBR),the causes and influencing factors of membrane fouling in MBR were described.The mechanism of reducing membrane fouling in electrically coupled membrane bioreactor(EMBR)was analyzed,and the inhibitory effects of conductive membrane and self-generated electric field on membrane fouling were introduced.The analysis shows that EMBR can control membrane fouling in situ through electrochemical actions such as electroosmosis,electrophoresis,electrooxidation and electrochemical quorum quenching.The application of the self-generated electric field of microbial fuel cell(MFC)in EMBR can reduce membrane fouling and recover part of energy in the form of electric energy.The application of conductive membrane optimizes the structure of EMBR.The MFC-MBR coupling process with self-generated electric field has a good application prospect.