中文摘要：

反渗透（RO）海水淡化是一种有效获取淡水的技术，同时，结垢、浓水处理、能耗等问题制约着反渗透的进一步发展．采用纳滤（NF）作为反渗透的海水淡化预处理工艺，能有效解决反渗透膜结垢问题，并降低能耗，有助于排放浓水的处理．本文从海水淡化预处理纳滤膜的性能、海水淡化纳滤预处理的工艺以及NF—RO与其他方法联用三个方面综述纳滤-反渗透联用进行海水淡化的研究进展．

英文摘要：

Reverse osmosis （RO） seawater desalination is an effective way to produce fresh water. However, the effect of scaling, concentrated water treatment and energy consumption limit thefurther application and development of reverse osmosis seawater desalination.Nanofiltration（NF） usedas the pre-treatment process of seawater,prevented RO membranes from scaling,reduced energy consumption and also played an important role in concentrated water treatment.This study mainly summarizedprogress ofnanofiltration membrane seawater desalinationperformance, nanofiltration as a pretreatment method before reverse osmosisand NF-RO combines with some other desalination technologies.