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概述了近２０ 年纳滤膜的制备及应用研究状况。由于纳滤膜在低压下对分子量数百的分子和二价及高价离子具有较高的渗透性和分离性能，使其在工业生产的物料分离、分级、浓缩和回收等方面得到日益广泛的应用，对其制备方法的研究也得到各研究部门的重视。作者主要讨论了纳滤膜的４种制备方法———转化法、共混法、复合法和荷电化法的制备原理和制备要点，讨论了纳滤膜在食品、生化、制药、染料、石化等工业部门及在工业污水和生活污水处理上的应用原理和实例，可以看出，纳滤膜在工业生产的分离和污水处理领域有着广阔的应用前景。
The preparation and application of nanofiltration membranes in recent 20 years are summarized. Because nanofiltration membrane at low pressure on the molecular weight of hundreds of molecules and bivalent and high ion has high permeability and separation performance, making it in the industrial production of materials separation, grading, concentration and recovery has been increasingly widely used , The research on its preparation method has also received the attention of all research departments. The author mainly discusses the four preparation methods of nanofiltration membrane --- conversion method, blending method, compounding method and preparation principle of charge-electrification method, and preparation essentials. The effects of nanofiltration membrane on food, biochemistry, pharmaceutical, dye, petrochemical It can be seen that nanofiltration membrane has broad application prospect in the field of industrial production separation and sewage treatment.