Continuous experiments were conducted in the Electric Field assisted Microfiltration (EFMF) reactors under different applied voltages to investigate the effects of electric fields on membrane fouling and trace organic compounds (TrOCs) removal during microfiltration processes. The Bovine serum albumin (BSA) was used as the model foulant in the EFMF system and its property change in electric field was found to be the key reason of membrane fouling alleviation. The oxidants, especially hypochlorite, generated on anodes led to protein unfolding and solubility reduction. Through the combined effects of electrochemical oxidation and electrophoretic migration, the denatured protein aggregated into flocs with larger size than the pore diameter of membrane, which obviously reduced the hydraulic irreversible resistance of microfiltration by 64.8 % and 70.5 % at 2 V and 3 V, respectively. Compared with microfiltration, the elimination of TrOCs could be significantly improved from 6.3 %∼13.8 % to 34.4 %∼91.6 % at the 3 V applied voltage. Electrochemical oxidation was the main contributor to the TrOCs removal in the EFMF system and the electrophoretic migration made the TrOCs tend to remain in the electric field and have more contact time with oxidants and thus enhanced their removal efficiencies.

在电场辅助微滤（EFMF）反应器中，在不同的施加电压下进行了连续实验，以研究电场对微滤过程中膜结垢和微量有机化合物（TrOCs）去除的影响。牛血清白蛋白（BSA）被用作EFMF系统中的模型污垢，其电场特性的变化是减轻膜污垢的关键原因。阳极上产生的氧化剂（尤其是次氯酸盐）导致蛋白质解折叠和溶解度降低。通过电化学氧化和电泳迁移的共同作用，变性蛋白质聚集成絮体，其尺寸大于膜的孔径，从而明显降低了微滤的水力不可逆阻力，分别为64.8％和70。2 V和3 V分别为5％。与微滤相比，在3 V施加电压下，TrOCs的消除可以从6.3％〜13.8％显着提高到34.4％〜91.6％。电化学氧化是EFMF系统中TrOCs去除的主要推动力，电泳迁移使TrOCs倾向于保留在电场中，并与氧化剂接触时间更长，从而提高了其去除效率。