可旋转的太阳能集热—减压膜蒸馏式脱盐研究  

Research on the rotatable solar collector-vacuum membrane distillation desalination

作　　者：王世选 王芳[2] 李进[1] 夏东升[1] 

机构地区：[1]武汉纺织大学纺织印染清洁生产教育部工程研究中心,湖北武汉430200 [2]东华大学环境科学与工程学院,上海201620

出　　处：《工业水处理》2016年第5期24-27,共4页Industrial Water Treatment

基　　金：国家"十二五"科技支撑计划(2014BAC13B02-1);国家"863"计划(2013AA031802)

摘　　要：设计构建了1套新型可旋转的太阳能集热—减压膜蒸馏脱盐系统装置,以太阳能集热提供热源,以3.5%的氯化钠溶液模拟海水进行脱盐实验。研究了不同进料液温度、冷侧真空度、进料液流量对膜组件性能的影响,以及1个工作日内膜通量、淡水电导率和截留率的影响变化。结果表明:当系统运行稳定时,膜组件入口进料液温度、冷侧真空度和进料液流量是影响系统性能的主要因素,且在1个工作日内系统所产淡水的电导率可达到10μS/cm以下,截留率可达到99.9%以上。A new type of solar collector-vacuum membrane distillation desalination system has been designed and builted. The solar collector is used for providing heat sources for the system. Desalination experiments are conducted by using 3.5% of sodium chloride solution as simulated seawater. The effects of different temperatures of feed-in liquid,the vacuum degree on cold side,and the flow rate of feed-in liquid on the performances of the membrane module,as well as the changes of influences resulted from membrane flux,freshwater conductivity and retention rate per workday are studied. The results show that when the system runs stably,the main factors affecting the system performances are the inlet feed-in liquid temperature of the membrane module,vacuum degree on the cold side,and flow rate of the feed-in liquid. Moreover,the conductivity of fresh water produced by the system can reach 10 μS/cm or less,and the retention rate can be above 99.9% in a workday.

关 键 词：太阳能 聚丙烯中空纤维膜 膜蒸馏 脱盐 

分 类 号：X703.1[环境科学与工程—环境工程]