期刊
DESALINATION
卷 543, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.desal.2022.116122
关键词
Full-scale; Ultrafiltration; Drinking water treatment plants; Long-term operation; Membrane performance
资金
- National Natural Science Foundation of China
- Sichuan Science and Technology Program
- Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology
- Fundamental Research Funds for the Central Universities
- [51708371]
- [2021YJ0387]
- [QG202230]
This study systematically evaluated the characteristics of UF membranes in large-scale DWTPs in China, analyzed the performance of UF membranes during long-term operation and the fouling evolution, and assessed the impact of pretreatment methods and cleaning approaches on membrane. It provides useful guidance for the long-term operation of UF membranes in full-scale DWTPs.
The installed capacity of ultrafiltration (UF) membranes in drinking water treatment plants (DWTPs) has increased significantly, it is necessary to summarize the long-term characteristics of UF membranes in full-scale DWTPs in China. Firstly, the characteristics of UF membranes applied in large-scale DWTPs in China were systematically evaluated based on capacity, location, membrane materials and filtration mode. By 2020, the total capacity of large-scale DWTPs using UF membranes has reached -10 million m3/d. Polyvinylidene fluoride was the dominant UF membrane material with a proportion of 73.7 %, followed by polyvinyl chloride. Secondly, the performance of UF membranes in various typical DWTPs during long-term operation was analyzed. UF membrane in five typical treatment processes displayed good contaminant removal performance, while the combination of UF membrane with coagulation, sedimentation and filter was widely used. The fouling evolution of UF membranes during long-term operation was systematically analyzed. Then, the effect of pretreatment methods and cleaning approaches on membrane in full-scale DWTPs were assessed. The use of hydraulic cleaning, maintenance cleaning and recovery cleaning could ensure the stable operation of UF membranes, while thesecleaning methods may adversely influence membrane lifetime. This study could provide useful guidance for long-term operation of UF membrane in full-scale DWTPs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据