摘要
正渗透是以膜两侧汲取液和原料液之间的渗透压差为驱动力,使水从原料液(较低渗透压)一侧自发传递到汲取液(较高渗透压)一侧的膜分离技术。汲取液是影响正渗透分离性能的重要因素之一,然而目前使用的大多数汲取液面临反向溶质渗透严重和再生能耗高的问题,这导致了正渗透性能的显著下降。简要介绍了近几年国内外主要研究的新型汲取液,分析总结了不同汲取液的优点及其应用范围。
Forward osmosis（FO） is a kind of membrane separation technology, which use the osmotic pressure difference between the draw solution at the two sides of membranes and the feed solution as the driving force, and transport water from feed solution side（lower osmotic pressure） to draw solution side（higher osmotic pressure） automatically. Draw solution is one of the key factors affecting the separation performance of forward osmosis; however, most recently used draw solution is troubled by serious draw solute leakage and high energy consumption of regeneration, the FO performance always declined obviously. Novel kinds of draw solutions in recent researches of China and aborad were introduced with the advantages and application ranges of them analyzed and summarized at the same time.
出处
《工业用水与废水》
CAS
2016年第6期1-5,共5页
Industrial Water & Wastewater
基金
国家自然科学基金资助项目(51578390)
关键词
正渗透
汲取液
渗透压
再生
forward osmosis
draw solution
osmotic pressure
regeneration
