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Desalination of Nanofiltration Membranes and its Application in Seawater Softening

Authors： ZHANG Lina1, HUANG Jie1*，XIONG Danliu1，YANG Junhe2*

Units： 1.College of Chemical Engineering,East China University of Science and Technology. Shanghai 200237,China；2.School of Materials Science and Technology, University of Shanghai for Science and Technology, 200093, China

KeyWords： seawater; softening; nanofiltration; membrane separation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2012, 32(1):98-102

Abstract：

Desalination experiments of five inorganic salt solutions(MgSO4、K2SO4、MgCl2, etc)have been carried out by roll Nanofiltration. The effects of the species and the concentration of salt as well as the operation pressure on the the apparent retention and the flux of penetrating fluid. Studies on desalination performance of artificial seawater are also introduced. Results from the studies of desalination show that nanofiltration membrane is stable during the experiment. For SO42- in seawater nanofiltration nanofiltration membrane could achieved salt retention up to 90%, and Mg2+,Ca2+ up to 50%, It could solve the problems of nanofiltration membranes pollution that existed on the traditional desalination process.Compared with distillation,nanofiltration reduce the cost of seawater desalination and energy consumption. Therefore, nanofiltration technology could be used to pretreat seawater.

Funds：

国家自然科学基金(50773040)；国家973项目(2010CB234609)

AuthorIntro：

作者简介张莉娜(1987—)，女，河南濮阳人，硕士，从事膜分离技术以及海水软化方面的研究.E-mail：zhanglinnaa@163.com.* 通讯联系人：黄婕，教授。E-mail：jieh@ecust.edu.cn;杨俊和，教授，博导， E-mail：jhyang@usst.edu.cn

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