Deicing Fluid Treatment in Batch-Loaded Aerobic Fluidized Bed Reactor
Publication: Journal of Environmental Engineering
Volume 124, Issue 1
Abstract
This study demonstrates the feasibility of treating storm water contaminated with airport deicing fluid (ethylene glycol) in a batch-loaded aerobic fluidized bed reactor. In addition, the removal rates were measured for batch-loaded and continuously loaded fluidized bed reactors. These values were compared with each other and with more conventional wastewater treatment processes. Treating the contaminated storm water in batches eliminated the operational problems common to a continuously loaded aerobic fluidized bed reactor. Most significantly, excess biofilm growth and the accompanying maintenance and operational problems were controlled through endogenous respiration. Ethylene glycol and chemical oxygen demand removal rates of 710 and 2,200 g/m3/day, respectively, were achieved in the batch-loaded reactor. The resulting batch-loaded full-scale installation is expected to be two to three times larger than a continuously operated fluidized bed reactor; however, it is expected to be equal to or much smaller than more conventional activated sludge and fixed film process installations. An additional benefit of the batch-loaded process is the low quantity of sloughed biofilm, which results in a low level of effluent solids (16 mg/L total suspended solids). As a result, secondary clarification and associated sludge treatment might not be required.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 124 • Issue 1 • January 1998
Pages: 11 - 15
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Jan 1, 1998
Published in print: Jan 1998
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