Abstract: A fouling-resistant ceramic-supported polymer composite membrane was developed for removal of oil-in-water (O/W) microemulsions. The composite membrane was featured with an asymmetric three-layer structure, i.e., a porous ceramic membrane substrate, a polyethersulfone (PES) ultrafiltration sub-layer, and a polyamide/polyvinyl alcohol (PVA) composite thin top-layer.The PES polymer was cast onto the tubular porous ceramic membrane with the sol-gel method, and the polyamide/PVA composite thin top-layer was fabricated with the interfacial polymerization method. The prepared composite membrane showed good performance for treating the O/W microemulsions with a mean diameter of 2.4 μm. At the operating pressure of 0.4 MPa, the hydraulic permeability remained steady at about 280 L•m^-2•h^-1 after a period of operation, the oil concentration in the filtrate was always less than 1.15 mg•L^-1, and the oil rejection coefficient was higher than 99.1% from the beginning of the operation.

Key words: 复合膜, 抗污染, 油水分离, 微乳液, 界面聚合

关键词: 复合膜, 抗污染, 油水分离, 微乳液, 界面聚合