净水技术2012，Vol.31Issue(5)：25-28,58,5.
正渗透—纳滤耦合处理苦咸水脱盐工艺
Technological Processes of Desalination Treatment for Brackish Water with Coupled Forward Osmosis-Nanofiltration System
摘要
Abstract
Simulating 2 000 mg/L NaCl as brackish water, using divalent salt (Na2SO4, MgSO4, MgCl2 and their mixture solution) as draw solution, the water flux of forward osmosis(FO) for brackish water desalination was investigated. The nanofiltration (NF) performance for the recovery of draw solution was determined by software and experiment, and a dual NF process was designed for the recovery of diluted draw solution. Results show that the water flux of MgSO4 in FO process is lowest, and that of MgCl2 is highest. It is opposite in NF process that the NF performance of MgSO4 is best, and that of MgCl2 is worst. When the diluted draw solution of Na2SO4 is 30 g / L, it could be concentrated to the initial concentration (60 g/L) by a dual stage NF process, and the permeate TDS is lower than 500 mg/L.关键词
正渗透/苦咸水淡化/纳滤/汲取液回收Key words
forward osmosis (FO) brackish water desalination nanofiltration (NF) draw solution recovery分类
化学化工引用本文复制引用
时强,张乾,阮国岭,初喜章..正渗透—纳滤耦合处理苦咸水脱盐工艺[J].净水技术,2012,31(5):25-28,58,5.基金项目
国家海洋公益性行业科研专项经费项目(No.200905017-1) （No.200905017-1）
