摘要
正渗透相对于外力驱动膜分离技术压力更低、能耗小,对环境的影响也较弱,近年来颇受关注。分析了正、反渗透技术的差异,探究了正渗透技术中膜材料的不同对膜污染与浓差极化现象的影响及不同汲取液的性能,综述了其在海水淡化、废水处理和能源领域的应用。此外,通过对正渗透水处理技术研究现状的说明,明确了该技术主要在膜性能和汲取液方面存在不足,将其进一步研究改进会促进新一代水处理技术的发展和应用。
The osmotic pressure difference between the permeable membranes is used to transport water in the membrane,and its driving force is due to the concentration difference. Compared with the external force,the positive permeation process of membrane separation is lower,the energy consumption is smaller,and the impact on environment is also weaker. In recent years,this new type of membrane technology has attracted wide attention of scholars from all over the world. The differences of penetration and reverses osmosis technology were analyzed, the effects of different penetration technology in membrane materials on membrane fouling and concentration polarization were explored and different absorbing liquids were compared. Its applications in seawater desalination,waste water treatment and energy field were summarized. In addition, through the description of the current research status of osmosis water processing technology,it was cleared that the technology was mainly inadequate in membrane performance and draw solution. With further improvement,it will promote the development and application of a new generation of water treatment technology.
出处
《广州化工》
CAS
2018年第1期1-3,32,共4页
GuangZhou Chemical Industry
基金
安徽省公益性技术应用联动研究计划项目(1501ld04051)
安徽省高校自然科学研究重点项目(KJ2016A424)
关键词
正渗透
膜污染
浓差极化
汲取液
forward osmosis
membrane fouling
concentration polarization osmosis membrane
draw solution
