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PVDF中空纤维膜修复技术探究

作者：胡月¹，张庆磊¹，卢彦斌²，彭兴峥²，余丽丽¹，苏志鹏¹

单位： 1.北京碧水源膜科技有限公司，北京市 101400 中国； 2.北京碧水源分离膜科技有限公司，北京市 101400 中国

关键词：聚偏氟乙烯；中空纤维膜；膜修复；循环利用

DOI号：

分类号： X799

出版年,卷(期):页码： 2021,41(4):110-116

摘要：

为解决运行过程中功能层破损引起的膜材料提前报废，本研究采用自制针对功能层损伤的微滤膜修复液，以微球吸附法对膜丝进行修复。考察了抽吸时间、抽吸压力以及后处理温度、后处理时间对膜丝性能的影响，确定了最佳工艺条件。修复后膜丝表面光滑平整，运行更加平稳。与修复前相比，运行压力降低了79.4%，60万PEO截留率提高了19.2%，水接触角降低了28.4%。

The membrane material will be discarded in advance because its functional layer is damaged during operation. In order to solve the problem of membrane materials being discarded in advance, a PVDF hollow fiber membrane repair technology has been developed. A self-made microfiltration membrane repair solution for repairing functional layer damage was used to repair the membrane. The repair method is the microsphere adsorption method. The effects of suction time, suction pressure, post-treatment temperature, post-treatment time on the properties of membrane were investigated, and the optimum process conditions were determined. After repair, the surface of the membrane is smooth and flat, and the operation pressure is more stable. Compared with pressure of unrepaired membrane, the operating pressure decreased by 79.4%, the rejection rate of 600000 PEO increased by 19.2%, and the water contact angle decreased by 28.4%.

基金项目：

北京市博士后（青年英才）科研活动经费资助创新研发A类（JCQNJC1308800）。

作者简介：

胡月（1995-），女，河北省邢台人，研究生，硕士，超微滤膜的修复与开发

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