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Low-Energy Nitrification of Wastewaters Using Membrane Aerated Biofilm Reactors

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dc.contributor.advisor Zhou, Hongde Duvall, Craig 2018-01-04T16:39:28Z 2018-01-04T16:39:28Z 2017-12 2017-12-13 2018-01-04
dc.description.abstract The membrane aerated biofilm reactor is a new energy-efficient technology that utilizes bubbles-less aeration to supply oxygen for biological nitrification and degradation of wastewater. GE Water & Process Technologies recently released a new oxygen-permeable hollow-fiber membrane specifically designed for use in membrane aerated biofilm reactors (MABRs). These fibers are organized into bundles which are wrapped around a reinforcing yarn core for strength. The design, marketed by GE as the Zeelung™ cord, not only provides a vast surface area for oxygen transfer, but includes the strength and durability needed for industrial uses. The purpose of this study was to evaluate the performance of MABRs using ZeeLung™ cords. Synthetic influents with a range of COD/N ratios from 1.3 to 4.6 were prepared and tested at multiple loading rates to determine the impact on nitrification, oxygen transfer, and biofilm composition. Experimental results demonstrated nitrification and oxygen transfer abilities of up to 6.5 g/m2/d and 20.0 g/m2/d, respectively for the experimental test conditions. Results also showed that increasing the COD/N ratio up to 4.6 by increasing the glucose concentration in the feed resulted in substantial heterotrophic growth, which inhibited nitrification but increased denitrification of any nitrified effluent. en_US
dc.description.sponsorship GE Water & Process Technologies en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial-NoDerivs 2.5 Canada *
dc.rights.uri *
dc.subject Wastewater treatment en_US
dc.subject Nitrification en_US
dc.subject Nutrient removal en_US
dc.subject Membrane aerated biofilm reactor en_US
dc.subject MABR en_US
dc.subject Biofilm en_US
dc.title Low-Energy Nitrification of Wastewaters Using Membrane Aerated Biofilm Reactors en_US
dc.type Thesis en_US Engineering en_US Master of Applied Science en_US School of Engineering en_US
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Attribution-NonCommercial-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada