膜科学与技术

国产纳滤膜用于苦咸水脱盐制备饮用水的研究

作者：张翔，王继文，杜润红，赵相山，杜春良，闫伟，王晶晶，杜润红

单位： 1. 天津工业大学省部共建分离膜与膜过程国家重点实验室，天津 300387；2. 天津工业大学材料科学与工程学院，天津 300387；3. 中国膜工业协会，北京 100029

关键词：苦咸水；脱盐；膜；纳滤

出版年,卷(期):页码： 2020,40(4):87-91

摘要：

为解决偏远地区高盐度苦咸水的淡化问题，本工作文对高盐度苦咸水进行纳滤脱盐实验研究。采用模拟盐溶液，重点评估操作条件对国产商品化4040纳滤膜VNF2性能的影响，并与进口纳滤膜（ESNA1）的脱盐性能进行比较。结果表明，VNF2的渗透通量及脱盐率均随操作压力的增加而增加，随进水盐浓度的增加而减小；与ESNA1相比，VNF2能够有效地将10 g/L的高盐度苦咸水脱盐至淡水水平，其渗透产水的含盐量低于0.6 g/L，满足国家饮用水卫生标准对含盐量的要求（< 1 g/L）；脱盐过程的操作压力低于1.6 MPa，该操作压力使脱盐设备能够使用工程塑料管道和阀门，从而使得设备组装及维护工艺变得简单，并解决了设备防腐蚀防护和不锈钢材料焊接的问题，具有较大的现实意义。

In order to solve the problem of desalination of high salinity brackish water in remote areas, this work carried out experimental research on nanofiltration desalination of high salinity brackish wateran experimental study on nanofiltration desalination of high salinity brackish water was conducted in this work. The effect of operating conditions on the performance of domestic commercial 4040 nanofiltration membrane VNF2 was simulated evaluated using a simulated salt solution, . and tThe desalination performance of VNF2 and that of an imported nanofiltration membrane (ESNA1) was were compared. The results demonstrate that the permeation flux and salt rejection of VNF2 increase with the increase of operating pressure, and decrease with the increase of the feed salt concentration; . Compared with ESNA1, VNF2 can effectively desalinate brackish water with a high salinity of 10 g/L to the level of fresh water, . and tThe salt content of its permeate produced water is less than 0.6 g/L, which can meet the standardsGuidelines for Drinking Water Quality of China (< 1 g/L); ). The operating pressure of the desalination process is lower than 1.6 MPa. This operating pressure range enables the desalination system to use engineering plastic pipes and valves, which can make the assembly and maintenance of the equipment simple and solving solve the equipment anti-corrosion problem of corrosion protection and welding of stainless steel materials, which has great practical significance.

*通信作者：杜润红（1977—），女，北京，博士，副教授，主要研究方向为膜分离工程和高分子材料，E-mail：durunhong@tjpu.edu.cn 第一作者：张翔（1994-），男，山东，硕士，研究膜分离及水处理方向，E-mail：849945688@qq.com

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