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Optimization of Design and Operation Parameters for Pressurized Ultrafiltration Membrane Modules in Advanced Municipal Wastewater Treatment

Authors： Bai He, Lin Yakai, Li Ningning, Hu Yanping, Jin Yutao,Zhang Jinglong, Zheng Xiaohong, Ye Jingmei, Zhang Yangang

Units： (1.Beijing Scinor Membrane Technology Co. Ltd., Beijing, 100083, (2.China; Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China; Beijing Scinor Water Technology Co. Ltd., Beijing, 100083, China

KeyWords： effective fiber length; operation flux; filtration period; backwash flux; municipal wastewater

ClassificationCode：X703

year,volume(issue):pagination： 2021,41(5):146-154

Abstract：

Advanced treatment and reuse of municipal wastewater is an important part of the resource utilization. This paper introduces the application of polyvinylidene fluoride (PVDF) pressurized ultrafiltration membrane that produced via thermally induced phase separation (TIPS) in municipal wastewater project to study the effects of effective fiber length under different operation conditions on membrane performance, in order to provide a guidance for the subsequent development of other ultrafiltration applications in municipal wastewater advanced treatment. The results showed positive effect of shorter effective fiber length on TMP reducing and lower the fouling rate at the design of high packing density (0.8 m2/m3) and 1500 mm-1800 mm effective fiber length. The performance is more obvious under the conditions of the higher flux and filtration period. The results showed that the flux can be stabilized to 75 L/m2·h, the filtration period can be extended to 54 minutes for SMT900-P80, Both are better than SMT600-P80 with longer effective fiber length. The results also showed that reasonable parameters should be set according to the membrane module that used. The scanning electron microscopy (SEM) analysis and the turbidity of the permeate shows that the ultrafiltration membrane has good of pollutant removal effect and high anti-pollution performance, which will lead to the good application prospects.

Funds：

项目来源“清华大学春风基金”（2020Z99CFY041）

AuthorIntro：

白鹤（1991-），男，北京，硕士，工程师，水处理超滤膜应用，E-mail：Stefan19910130@hotmail.com

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