环境工程学报2013，Vol.7Issue(3)：963-968,6.
叠式空气隙膜蒸馏组件膜污染实验研究
Experimental study on membrane pollution of stacked air-gap membrane distillation module
摘要
Abstract
A stacked AGMD module with rotational flow structure was designed to investigate the membrane pollution situation, when the hot working medium was NaCl solution of 20 g/L and 70 ℃ . The experimental results showed that membrane pollution appeared faster on membrane module under the high temperature condition in one experimental period of intermittent and continuous operation, after eight experimental periods, the flux dropped down to 42% of initial flux. The membrane surface was covered by a large number of yellow attachments. The SEM analysis showed that the yellow attachments were uneven accumulated granular pollutants and cuboid crystals. The EDS analysis showed that the pollutants had a minimum amount of Na and Cl element of NaCl crystallization, and also some O,C,Mg,Cu,Fe elements. The inorganic-scale precipitation on the fouling membrane can be wiped off with 5% hydrochloric acid solution, and the effect is good.关键词
气隙式膜蒸馏/膜污染/膜通量/膜清洗Key words
air-gap membrane distillation/ membrane pollution/ mass transfer/ membrane washing分类
化学化工引用本文复制引用
杨晓宏,田瑞,马淑娟,吕海莉..叠式空气隙膜蒸馏组件膜污染实验研究[J].环境工程学报,2013,7(3):963-968,6.基金项目
国家自然科学基金资助项目(51266007) （51266007）
内蒙古重大自然科学基金资助项目(2010ZD09) （2010ZD09）
