Removal characteristics of dissolved organic matter and membrane fouling in ultrafiltration and reverse osmosis membrane combined processes treating the secondary effluent of wastewater treatment plant

被引：18
|
作者：
Liu, Jianwei [1 ,2 ]
Zhao, Mengfei [1 ,2 ]
Duan, Cui [1 ,2 ]
Yue, Peng [1 ,2 ]
Li, Tinggang [3 ]
机构：
[1] Beijing Univ Civil Engn & Architecture, Beijing Engn Res Ctr Sustainable Urban Sewage Sys, Beijing 100044, Peoples R China
[2] Beijing Univ Civil Engn & Architecture, Key Lab Urban Stormwater Syst & Water Environm, Minist Educ, Beijing 100044, Peoples R China
[3] Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY | 2021年 / 83卷 / 03期
关键词：
combination process; DOM; membrane fouling; UF plus RO; wastewater reclamation;
D O I：
10.2166/wst.2020.589
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The widespread implementation of municipal wastewater treatment and reuse must first ensure the safety of reused wastewater. The effluent of the municipal wastewater treatment plant contains a large amount of dissolved organic matter (DOM), which adversely affects the reuse of wastewater. In this study, the ultrafiltration (UF) + reverse osmosis (RO) process was used to treat the secondary effluent from wastewater treatment plants. The relationship between the removal performance, membrane fouling of the UF + RO process, and DOM removal characteristics of influent were studied. The results show that DOM can be removed effectively by UF + RO process. The UF mainly removes DOM with a molecular weight greater than 10 kDa, while RO has a significant removal effect on low-molecular-weight DOM, which mainly causes UF and RO membrane fouling. The UF + RO process has a significant removal rate on fulvic acid, humic acid, tyrosine, and tryptophan, and the order is humic acid > fulvic acid > tyrosine > tryptophan. Fulvic acid contributed the most to the UF membrane fouling, while fulvic acid and protein-like proteins contributed mainly to the RO membrane fouling.
引用
收藏
页码：689 / 700
页数：12
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