典型金属赋存形态对MBR膜污染影响研究进展

Research Progress on the Influence of Typical Metal Speciation on Membrane Fouling in Membrane Bioreactor

膜污染是膜生物反应器(MBR)进一步发展的最大障碍,污泥混合液性状是影响膜污染的关键因素。本文综述了金属离子在MBR混合液中的赋存形态,并分别对金属离子3种不同赋存形态对MBR污泥混合液及膜分离过程的影响进行了探讨。文中揭示了同价离子或异价离子共存对混合液及膜分离的影响,对共存体系中金属离子间的协同或拮抗行为也进行了讨论,并对利用高价金属离子减缓膜污染领域未来的研究趋势进行了展望。

Membrane fouling is one of the main problems of membrane bioreactor（ MBR）,which has become a major obstacle for the application of MBRs. Characteristices of the mixed liquor influence membrane fouling significantly. The article summarized studies on the distribution mechanism of metal ions speices in MBR and the effect of three categories of metal ions speices on the mixed liquor characteristics and membrane fouling were also discussed. This review explored the effect of coexisting metal ions,including same or different valence metal ions,on mixed liquor characteristics and membrane fouling,and the synergistic or antagonistic effect of coexisting exchangeable metal ions on bioflocculation will be revealed. The future trends in the applicability of high valence metal ions for reducing fouling in MBRs in the coming years were addressed.