Performance and Kinetics of Aerated Fluidized Bed Biofilm Reactor
Publication: Journal of Environmental Engineering
Volume 115, Issue 1
Abstract
The aerated fluidized bed biofilm reactor (FBBR) was evaluated for treatment of a corn starch wastewater at food‐to‐microorganism (F/M) ratios ranging from 0.42 to 1.61 g 5‐day biochemical oxygen demand total volatile solids (TVS)‐day. Laboratory results indicated that good combined carbon oxidation‐nitrification, with removal efficiencies greater than 90%, could be achieved providing that F/M ratio and mean cell residence time (MCRT) were maintained at less than TVS‐day and longer than five days, respectively. More than 95% of reactor biomass in an aerated FBBR was immobilized on the fluidized media. Depending on the loadings applied, between 25 to 75 mg TVS could be immobilized per gram of sand. Good oxygenation performance, with bulk‐liquid DO concentrations consistently greater than was achievable because the fluidization requirements of media controlled the air injection rate. Both removal and nitrification kinetics exhibited a pattern suggesting that mass transfer resistances of substrates could be significant within the region of low bulk‐liquid concentrations.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 115 • Issue 1 • February 1989
Pages: 65 - 79
Copyright
Copyright © 1989 ASCE.
History
Published online: Feb 1, 1989
Published in print: Feb 1989
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