| Enhanced membrane bioreactor process without chemical cleaning. | |
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MedLine Citation:
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PMID: 20453330 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In membrane bioreactors (MBR) for wastewater treatment, the separation of activated sludge and treated water takes place by membrane filtration. Due to the small footprint and superior effluent quality, the number of membrane bioreactors used in wastewater treatment is rapidly increasing. A major challenge in this process is the fouling of the membranes which results in permeability decrease and the demand of chemical cleaning procedures. With the objective of a chemical-free process, the removal of the fouling layer by continuous physical abrasion was investigated. Therefore, particles (granules) were added to the activated sludge in order to realise a continuous abrasion of the fouling layer. During operation for more than 8 months, the membranes showed no decrease in permeability. Fluxes up to 40 L/(m(2) h) were achieved. An online turbidity measurement was installed for the effluent control and showed no change during this test period. For comparison, a reference (standard MBR process without granules) was operated which demonstrated permeability loss at lower fluxes and required chemical cleaning. Altogether with this process an operation at higher fluxes and no use of cleaning chemicals will increase the cost efficiency of the MBR-process. |
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Authors:
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S Krause; B Zimmermann; U Meyer-Blumenroth; W Lamparter; B Siembida; P Cornel |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Water science and technology : a journal of the International Association on Water Pollution Research Volume: 61 ISSN: 0273-1223 ISO Abbreviation: Water Sci. Technol. Publication Date: 2010 |
Date Detail:
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Created Date: 2010-05-10 Completed Date: 2010-08-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9879497 Medline TA: Water Sci Technol Country: England |
Other Details:
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Languages: eng Pagination: 2575-80 Citation Subset: IM |
Affiliation:
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Microdyn-Nadir GmbH, Wiesbaden, Germany. s.krause@microdyn-nadir.de |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Aerobiosis Aluminum Silicates Anaerobiosis Bioreactors* Filtration / methods Industrial Waste Membranes, Artificial Permeability Pilot Projects Plastics Polymethyl Methacrylate Waste Disposal, Fluid / methods* Water Pollutants, Chemical / isolation & purification* Water Purification / methods* |
| Chemical | |
Reg. No./Substance:
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0/Aluminum Silicates; 0/Industrial Waste; 0/Membranes, Artificial; 0/Plastics; 0/Water Pollutants, Chemical; 1302-87-0/clay; 9011-14-7/Polymethyl Methacrylate |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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