高回收率反渗透海水淡化工艺的应用研究进展  

PROGRESS ON INVESTIGATION AND APPLICATION OF HIGH RECOVERY SEAWATER REVERSE OSMOSIS DESALINATION TECHNOLOGY

作　　者：宋跃飞[1] 高学理[1] 苏保卫[1] 高从堦[1] 

机构地区：[1]中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,山东青岛266100

出　　处：《水处理技术》2013年第3期6-12,共7页Technology of Water Treatment

基　　金：国家高技术研究发展计划资助项目(2010AA09Z301;2012AA03A602)

摘　　要：回收率是反渗透系统设计中一个非常关键的参数,决定着进水处理系统(取水、预处理系统和高压泵)的尺寸和占地面积。但系统回收率的提高需要较高的操作压力,由此带来较快的膜污染和频繁的膜元件清洗与更换。目前,在不加剧膜污染的条件下进一步提高海水淡化系统回收率的方法已成为该领域研究热点。本文详细综述了国内外高回收率反渗透海水淡化工艺的应用研究进展,包括基于纳滤海水软化的集成膜过程和热膜耦合海水淡化过程,以及这些过程面临的结垢问题和影响因素,并针对目前的研究方向提出了建议。Recovery ratio is a key parameter in seawater reverse osmosis（SWRO） system design,which determines the size of feed water handling system（intake,pretreatment system and high pressure pumping）.However,the increase of recovery ratio requires higher pressure,which will result in seriously membrane fouling and frequent membrane cleaning and replacement.At present,how to improve the recovery ratio of seawater desalination system,without aggravate membrane pollution,has become the research hotspot of the field.Nanofiltration（NF） is a relative new technology and has been investigated extensively to soften seawater since the 1980s,and has attracted more and more attentions for the application as seawater softening technology to removal divalent ions in seawater and provide excellent quality water for SWRO or MSF/MED to from a series of new technology termed as integrated membranes system（IMS） or hybrid system（HS） during the first decades of the new century.The progress of improving recovery of seawater desalination by NF technology,the scaling problem therein,as well as factors influencing the increase of recovery were presented and commented extensively in this paper.Moreover,the suggestions were also presented in this filed.

关 键 词：反渗透海水淡化 高回收率 纳滤海水软化 工艺耦合 结垢 

分 类 号：P747[天文地球—海洋科学]