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Item Description Hu, Jing en_US 2011-07-21T23:05:06Z 2011-07-21T23:05:06Z 2006 en_US
dc.description Thesis (M.S.)--University of Hawaii at Manoa, 2006. en_US
dc.description Includes bibliographical references (leaves 96-99). en_US
dc.description xiii, 99 leaves, bound ill. (some col.) 29 cm en_US
dc.description.abstract Design of fine-bubble aeration systems for membrane bioreactors (MBRs) is challenging due to high mixed liquor suspended solids (MLSS) concentrations that cause changes in alpha value, which is the ratio of mass transfer rate under process conditions to that under clean water conditions. This study describes the results of pilot-scale fine-pore aeration testing to determine a-values and influencing factors for MBRs. Clean water and process water aeration tests were performed at the Honouliuli WWTP during the period of December 2005 and October 2006. Three different 9-inch diameter fine-pore diffusers were tested. Comprehensive analyses of the sludge properties were conducted. Through this study, correlations were found to exist between a-value and oxygen uptake rate (OUR), particle size distribution (PSD), MLSS and viscosity of activated sludge, thereby providing better understanding and design guidance for MBR aeration systems. en_US
dc.language.iso en-US en_US
dc.relation Theses for the degree of Master of Science (University of Hawaii at Manoa). Civil and Environmental Engineering; no. 4125 en_US
dc.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner. en_US
dc.subject Bioreactors -- Design and construction en_US
dc.subject Aeration tanks -- Design and construction en_US
dc.title Evaluation of parameters influencing oxygen transfer efficiency in a membrane bioreactor en_US
dc.type Thesis en_US
dc.type.dcmi Text en_US

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