| Flow pattern analysis of a full-scale expanded granular sludge bed-type reactor under different organic loading rates. | |
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MedLine Citation:
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PMID: 22248799 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The hydraulic characteristics of a lab-scale and a full-scale (275m(3)) expanded granular sludge bed (EGSB)-type reactor under different organic loading rates varying from 10kgCODm(-3)d(-1) to 45kgCODm(-3)d(-1) were investigated. A modified combined model composed of two completely mixing regions and a plug flow region was sufficient for simulating the flow pattern of a full-scale EGSB-type reactor. Moreover, the outputs fitted the measured tracer distribution results well. The simplified model structure was in very good agreement with the physical structure of a full-scale EGSB-type reactor. The upflow (liquid+gas) velocity, high concentration of granular sludge, and gas hold-up effect may contribute to the generation of dead spaces (maximum of 19.5%). The bed expansion characteristics indicated that the sludge bed of the EGSB-type reactor performed as a suspended bed, in which the bed expansion was controlled between 20% and 30%, rather than the usually considered expanded bed. |
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Authors:
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M X Zheng; K J Wang; J E Zuo; Z Yan; H Fang; J W Yu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-3 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-1-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China. |
Export Citation:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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