正渗透技术在污水资源化中的研究进展

<正>渗透技术(FO)是一种以半透膜两侧溶液渗透压之差作为水分子跨膜驱动力的绿色膜分离技术。介绍了FO的原理及其对污染物的截留率较高、能耗小、膜寿命较长、不易发生膜污染且污染后的膜清洗更简单等优点。综述了FO在污水资源化领域的研究进展和应用现状,分析了目前应用中存在的主要问题,指出完善基础理论、研发膜材料、回收驱动液等是未来FO的主要发展方向。

Application of Forward Osmosis Technology in Resource Utilization of Wastewater: A Review

Forward osmosis（FO）technology is a promising green technology using the osmotic pressure difference between solutions across semi-permeable membrane as the driving force for water trans-membrane. The mechanism of FO and the advantages of FO are introduced, such as: high rejection rate of pollutants, low energy consumption, long lifetime of membrane, less membrane fouling, easy cleaning of polluted membrane, and so on. The research progresses and application status of FO in resource utilization of wastewater are summarized and the existing problems in the application are analyzed. The directions for further research are pointed out as follows: improving the basic theory, developing new membrane material and recovering the draw solution.