摘要
针对海水淡化工艺中反渗透膜单元的污染问题,对TFC反渗透膜的清洗方式进行了研究,研究表明:水力清洗、酸洗和碱洗均能缓解膜污染,但膜通量增长率不超过50%,水力清洗+2%浓度的柠檬酸清洗+0.1%浓度的氢氧化钠清洗的组合清洗方式具有较好的清洗效果,清洗后的膜通量可以达到47.6 L/m2·h,总的增长率为93.49%,能够有效的缓解膜污染,为反渗透膜组件的清洗提供技术支撑。
Aiming at the pollution problem of the reverse osmosis membrane units in desalination process, the cleaning methods of TFC reverse osmosis membrane have been studied,Results show that hydraulic cleaning,acid and caustic cleaning could alleviate membrane fouling,but the growth rate of the membrane flux did not exceed 50%,the combination cleaning way of the hydraulic cleaning＋2% citric acid concentration cleaning＋0.1% sodium hydroxide cleaning had the better cleaning effect,the flux after washing could be achieved at 47.6 L/m2·h,and the total growth rate was 93.49%,which can effectively alleviate the membrane fouling,and provide technical support for the reverse osmosis membrane cleaning.
出处
《电子测试》
2014年第3期4-6,共3页
Electronic Test
关键词
反渗透
清洗
膜通量
reverse osmosis
cleaning
membrane flux
