关键词: 膜, 油, 废水, 分离, 高度疏水, 超亲油

Abstract: This paper summarized the types of hydrophobic porous membrane for oil/water separation，including conventional membranes and highly hydrophobic/superolephilic membranes. Conventional membranes are for microfiltration，ultrafiltration and nanofiltration process currently. With greater water contact angle (≥120°)，the highly hydrophobic/superolephilic membrane have highly hydrophobic surface and cover modified meshes，modified fibers，modified filter paper，composite membranes and asymmetry membranes. It is possible that the fouling resistant membrane for oil/water separation lies on highly hydrophobic/superolephilic membranes. Principles and current applications of oil/water separation process with hydrophobic membrane were discussed. In disposition process of oily wastewater，the membranes take part in demulsification of O/W emulsion，coalescence of oil droplets，filtration of oil droplets and adsorption of oil molecules respectively. In purification process of watery oil，the membranes act as selective media，where continuous oil phase is permeated and water droplets is rejected. The preparation of highly hydrophobic/superolephilic membranes，the systematic investigation to oil/water separation process and the large scale tests with industrial system，were also discussed.

Key words: membranes, oil, waste water, separation, highly hydrophobic, superolephilic