RCEES OpenIR  > 中国科学院饮用水科学与技术重点实验室
Long-term direct ultrafiltration without chemical cleaning for purification of micro-polluted water in rural regions: Feasibility and application prospects
Wu, Siqi; Lu, Chaojie; Ma, Baiwen; Liu, Ruiping; Hu, Chengzhi; Ulbricht, Mathias; Qu, Jiuhui
2022-09-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume443Issue:0Pages:136531
AbstractWater treatment technologies that feature a simple operation, affordable cost, and low chemical addition are necessary to achieve the goal of supplying clean water to rural regions. In this study, an automated-control direct ultrafiltration (UF) process without chemical cleaning was operated and investigated using the micro-polluted surface water at a mountain village in China as feed. During the approximately 2.5-year operation, the UF process operated steady without pretreatment and chemical cleaning, and clean drinking water that met the Chinese drinking water standard (GB 5749-2006) was continuously available. Despite occasional shock loading (84.7 NTU), the turbidity (the major contaminant of feed water) was low (0.3 +/- 0.1 NTU) in the effluent, and the filtration resistance remained at (14.7 +/- 0.7) x 1012 m(-1) except for the initial increase. Compared with organic substances, inorganic substances were dominant constituents of cake layer. Alumina or silica particles were easily removed by frequent backwashing and were distributed on the outer surface (newly formed) of cake layer. In contrast, the bulk cake layer was predominantly composed of CaCO(3 )scales, indicating its major role in membrane fouling. Regarding organic fouling, low-molecular-weight hydrophilic carbohydrate-like compounds, which were related to bacterial activities, were dominant compositions (91.5%). Proteobacteria made a major contribution to bacterial communities (52.2%). Because of the simple process (almost unattended) and no chemical cleaning, the operation and maintenance cost was only 5.3 cents.m(-3) during the entire operation. These findings demonstrate that direct UF without chemical cleaning has significant application potential in rural regions with micro-polluted water.
Department中国科学院饮用水科学与技术重点实验室 ; 中国科学院饮用水科学与技术重点实验室
KeywordLOW-PRESSURE MEMBRANES FOULING MECHANISMS ORGANIC-MATTER FOULANTS BACKWASH REMOVAL CALCIUM SPECTRA OXIDE ACIDS
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47871
Collection中国科学院饮用水科学与技术重点实验室
Corresponding AuthorMa, Baiwen
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Duisburg Essen, Lehrstuhl Tech Chem 2, D-45117 Essen, Germany
4.Tsinghua Univ, Ctr Water & Ecol, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Wu, Siqi,Lu, Chaojie,Ma, Baiwen,et al. Long-term direct ultrafiltration without chemical cleaning for purification of micro-polluted water in rural regions: Feasibility and application prospects[J]. CHEMICAL ENGINEERING JOURNAL,2022,443(0):136531.
APA Wu, Siqi.,Lu, Chaojie.,Ma, Baiwen.,Liu, Ruiping.,Hu, Chengzhi.,...&Qu, Jiuhui.(2022).Long-term direct ultrafiltration without chemical cleaning for purification of micro-polluted water in rural regions: Feasibility and application prospects.CHEMICAL ENGINEERING JOURNAL,443(0),136531.
MLA Wu, Siqi,et al."Long-term direct ultrafiltration without chemical cleaning for purification of micro-polluted water in rural regions: Feasibility and application prospects".CHEMICAL ENGINEERING JOURNAL 443.0(2022):136531.
Files in This Item: Download All
File Name/Size DocType Version Access License
Long-term direct ult(5674KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Siqi]'s Articles
[Lu, Chaojie]'s Articles
[Ma, Baiwen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Siqi]'s Articles
[Lu, Chaojie]'s Articles
[Ma, Baiwen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Siqi]'s Articles
[Lu, Chaojie]'s Articles
[Ma, Baiwen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Long-term direct ultrafiltration without chemical cleaning for purification of micro-polluted water in rural regions_ Feasibility and application prospects.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.