Anaerobic Treatment of Low-Strength Domestic Wastewater Using an Anaerobic Expanded Bed Reactor
Publication: Journal of Environmental Engineering
Volume 124, Issue 7
Abstract
A significant potential exists to lower energy consumption and reduce sludge production by incorporating anaerobic processes into wastewater treatment trains. The specific treatment arrangement studied in this case is the anaerobic treatment of primary clarifier effluent of wastewater treatment plants. Anaerobic batch assays showed that the primary clarifier effluent used in this study was ultimately 90% or more anaerobically biodegradable, thus suitable for anaerobic treatment. The anaerobic expanded bed reactor (AEBR) performed well over a wide range of influent CODs and temperatures, especially under severe conditions (5°C and 50 mg/L influent COD). The most efficient treatment was obtained with HRTs of three to six hours and influent COD of approximately 150 mg/L. Start-up of the reactor took about 60 days at 30°C and 80 days at 20°C.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 124 • Issue 7 • July 1998
Pages: 652 - 659
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Jul 1, 1998
Published in print: Jul 1998
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