纳滤膜技术在饮用水深度处理中的应用现状

Application and Present Situation of Nanofiltration(NF) Technology in Drinking Water Advanced Treatment

纳滤(NF)可以去除各种有机物和有害化学物质,同时保留人体所必须的无机离子,因此其在饮用水深度处理,尤其减少消毒副产物和溶解性有机碳,NF膜法比传统处理方法具有不可比拟的优越性。作者综述了NF膜的定义与分离机理、NF膜制备方法及国内外商用NF膜的主要产品和特点,NF膜在饮用水深度处理中的典型应用,展望了纳滤膜的发展前景,并提出了未来NF膜在饮用水深度处理应用中需要进一步完善的研究内容。

As the innovative technology, nanofiltration （ NF） membranes could make effectively the advanced drinking water treatment in terms of various organic matter and harmful chemical material removal. And it may keep some inorganic ions which are indispensable for human body. Especially,NF membranes play a very important role on the disinfection of by-products and dissolved organic carbon during advanced treatment of the drinking water when compared with that of the conventional process. The main contents of the review are as follows. Firstly, it’s the definition of NF membrane and NF’s separation mechanism. Then the NF membranes’ fabrication methods and the mainly products of the NF membranes of the domestic and foreign companies are discussed. The next reviewed is the typical application examples of NF treatment system on the advanced treatment of the drinking water. Additionally, the NF’s great superiority in the advanced treatment of drinking water processing aspect has also been discussed. Finally, the tendency of future prospective development of NF technology and some research hotspots （the influencing factors of NF’s application） that needed to be improved are also presented.