膜科学与技术

聚酰胺反渗透复合膜改性技术研究进展

作者：潘春佑，徐国荣，赵河立

单位：国家海洋局天津海水淡化与综合利用研究所，天津，300192

关键词：海水淡化；反渗透膜改性；聚酰胺；复合膜

出版年,卷(期):页码： 2016,36(6):133-138

摘要：

海水淡化是目前应对全球淡水资源危机的最有效的方法，反渗透膜法因为分离效率高、低能耗和操作简便的特点已经逐渐成为海水淡化的主流技术。聚酰胺反渗透复合膜由于其优良的分离性能成为目前膜法海水淡化的主流应用膜，但是膜通量和盐离子截留率之间互相限制的关系、膜表面污染和氯氧化是限制其应用的三个主要方面，因此多种改性技术用来对其进行改性，以提高其通量和盐离子截留率、表面抗污染性能和耐氯性能。聚酰胺反渗透复合膜三层独立结构的特点为其改性提供了良好的平台，表面聚酰胺活性层、聚砜亚层和无纺布支撑层可以分开进行调节，从而达到复合膜结构和分离性能改性的目的。本文结合近年来围绕聚酰胺反渗透复合膜改性技术的研究进展进行了论述，重点围绕聚酰胺活性层表面改性和无机纳米材料掺杂、聚砜亚层的改性三个方面展开讨论，并对未来改性技术进行了展望。

Seawater desalination is the most effective method to meet the global potable water crisis. Reverse osmosis (RO) desalination has overwhelmingly dominated this area due to their high efficiency, low energy consumption, and easy operation. Polyamide thin film composite (PA-TFC) membranes are the mainly used reverse osmosis membranes due to their excellent separating properties. However, PA-TFC RO membranes are seriously limited by three problems of trade-off between permeations and salt rejections, membrane fouling and chlorination. Therefore, various tailoring methods have been applied to increase the permeations, salt rejections, antifouling properties, and chlorination resistance of PA-TFC RO membranes. The unique structures characteristics of PA-TFC RO membranes provide well platform for the tailoring because the surface active layer, sublayer and non-woven layer are independent and can be tailored individually. This paper gives a comment combined with the research development of tailoring technologies on the PA-TFC RO membranes. And finally, the prospective was proposed.

作者简介：潘春佑，男（1990-），汉，学士，国家海洋局天津海水淡化与综合利用研究所，助理工程师，研究方向为反渗透海水淡化。E-mail：418309446@qq.com

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