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Study on membrane cleaning process of membrane
distillation treatment of aniline wastewater

Authors： ZHANG Fangli1, 2, WU Cheng1, 2, CHEN Rizhi1, 2, WANG Zhaohui1, 2, WANG Xiaozu2, CUI Zhaoliang1, 2

Units： 1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China； 2. National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 211816, China

KeyWords： membrane distillation; aniline wastewater; membrane cleaning

ClassificationCode：TQ330.9

year,volume(issue):pagination： 2025,45(2):138-145

Abstract：

In this article, membrane distillation process was used to treat aniline wastewater. Membrane pollution in membrane distillation process was investigated, and the effects of different cleaning agents and cleaning sequence on membrane pollution and membrane flux were investigated according to pollution types. When the mass fraction of hydrochloric acid was 1% and the mass fraction of sodium hydroxide was 0.1%, the flux recovery rate of membrane distillation was the best, which was 97% of the initial flux, and the water contact angle of the membrane recovered to 114.6°, which was 96% of the original membrane. After cleaning, the stable operation time of membrane distillation was extended to 38 h. It provides a new idea for the selection of subsequent cleaning procedures for membrane distillation treatment of aniline wastewater.

Funds：

国家自然科学基金（22078146）

AuthorIntro：

张方莉（1997-），女，河南周口人，在读博士生，主要研究方向为化学工程与技术

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