| Comparison of fouling characteristics of two different poly-vinylidene fluoride microfiltration membranes in a pilot-scale drinking water treatment system using pre-coagulation/sedimentation, sand filtration, and chlorination. | |
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MedLine Citation:
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PMID: 18242659 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two pilot-scale hybrid water treatment systems using two different poly-vinylidene fluoride (PVDF) microfiltration (MF) membranes (i.e. symmetric and composite) were operated at a constant permeate flux of 104.2l m(-2)h(-1) (=2.5 md(-1)) with a pre-coagulation/sedimentation, sand filtration (SF), and chlorination to produce potable water from surface water. Turbidity was removed completely. And humic substances, Al, and Fe were removed very well by the pilot-scale membrane system. To control microbial growth and mitigate membrane fouling, a NaOCl solution was injected into the effluent from SF before reaching the two membranes (pre-chlorination). However, it adversely affected membrane fouling due to the oxidization and adsorption of inorganic substances such as Al, Fe, and Mn. In the next run, the NaOCl was introduced during backwash (post-chlorination). As compared with the result of pre-chlorination, this change increased the operating period of the symmetric and the composite membranes from about 10 and 50 days to about 60 and 200 days, respectively. |
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Authors:
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So-Ryong Chae; Hiroshi Yamamura; Keiichi Ikeda; Yoshimasa Watanabe |
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Publication Detail:
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Type: Comparative Study; Journal Article Date: 2007-12-23 |
Journal Detail:
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Title: Water research Volume: 42 ISSN: 0043-1354 ISO Abbreviation: Water Res. Publication Date: 2008 Apr |
Date Detail:
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Created Date: 2008-04-18 Completed Date: 2008-08-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 2029-42 Citation Subset: IM |
Affiliation:
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Department of Civil and Environmental Engineering, School of Engineering, Duke University, Durham, NC 27708, USA. srchae75@yahoo.co.kr |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Chlorine
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chemistry* Filtration / instrumentation, methods* Membranes, Artificial* Pilot Projects Polyvinyls / chemistry* Water Supply / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Membranes, Artificial; 0/Polyvinyls; 24937-79-9/polyvinylidene fluoride; 7782-50-5/Chlorine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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