Sludge Blanket Height and Flow Pattern in UASB Reactors: Temperature Effects
Publication: Journal of Environmental Engineering
Volume 132, Issue 8
Abstract
Two upflow anaerobic sludge blanket (UASB) reactors were operated for approximately to examine the feasibility of treating municipal wastewater under low temperature conditions. In this paper, a modified solid distribution model has been formulated by incorporating the variation of biogas production rate with a change in temperature. It was found that the model simulated the solid distribution well as confirmed by experimental observations of solid profile along the height of the reactor. Mathematical analysis of tracer curves indicated the presence of a mixed type of flow pattern in the sludge-bed zone of the reactor. It was found that the dead-zone and bypass flow fraction were impacted by the change in operating temperatures.
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Acknowledgment
The study was partly supported by the Natural Sciences and Engineering Research Council of Canada.NRC
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 132 • Issue 8 • August 2006
Pages: 895 - 900
Copyright
© 2006 ASCE.
History
Received: Jul 20, 2004
Accepted: Nov 17, 2005
Published online: Aug 1, 2006
Published in print: Aug 2006
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