文献类型：期刊文献

中文题名：纳滤-反渗透集成处理海水淡化浓盐水工艺研究

英文题名：Study on Treatment Technology of Concentrated Brine from Seawater Desalination by NF and RO Integrated Processing

作者：陈静[1];张杰[1];金艳[1];孙玉柱[1];宋兴福[1];于建国[1]

机构：[1]华东理工大学国家盐湖资源综合利用工程技术研究中心,上海200237

年份：2017

卷号：43

期号：5

起止页码：108

中文期刊名：水处理技术

外文期刊名：Technology of Water Treatment

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：国家科技支撑项目(2015BAB10B01);国家重点研发计划(2016YFC0401203)

语种：中文

中文关键词：浓盐水;脱硬;NF-RO;综合利用;零排放

外文关键词：concentrated seawater; softened seawater; NF-RO; comprehensive utilization; zero emission

摘要：以减排和资源再利用为目的,基于化学法与膜法相结合的海水淡化浓盐水综合利用工艺,系统研究了脱硬后浓海水利用纳滤(NF)脱硫酸根、通过反渗透(RO)实现海水二次淡化和深度浓缩的工艺过程。结果表明,NF270膜、DL2540NF膜分别能将SO_4^(2-)的浓度降低到3 mmol/L和2 mmol/L以下;RO对脱硬后浓海水中各离子均有较好脱除效果,达99%,浓缩1.45倍。工艺将化学法脱硬、NF、RO等膜法分离与浓缩技术综合考虑,能大幅提高淡水回收率,为氯碱工业提供液体盐原料,有利于降低淡化成本。
For the purpose of emission reduction and resource reuse, based on chemical and membrane methods combined comprehensive utilization technology of seawater desalination concentrated brine, the paper studied the processes of the seawater second-desalination and deep concentration by nanofitration （remove most of SO42 and reverse osmosis. The results showed that, concentration of SO42 could be reduced to 3 mmol/L and 2 mmol/L by NF270 and DL2540, respectively. RO could remove 99% ions in concentrated seawater, and the concentration was up to 1.45 times. The comprehensive consideration of chemical softened methods, NF and RO membrane separation and concentration technique, the recovery could improve significantly and provide raw materials for chlor-alkali industry, meanwhile, it could decrease the cost of desalination.