Four-Substrate Design Model for Single Sludge Predenitrification System
Publication: Journal of Environmental Engineering
Volume 129, Issue 5
Abstract
In this paper a new mathematical steady-state model specifically aimed at the design of biological phases in single sludge predenitrification systems is proposed. The model is based on the mass balance equations of four substrates (dissolved and suspended biodegradable organic matter, ammonia nitrogen, and nitrate nitrogen) and two biomasses (heterotrophic and autotrophic microorganisms). For each specific design problem, if both the influent flow composition and the kinetic parameter values are known and the effluent nitrogen compound concentrations are fixed, the model makes possible an a priori assessment of system applicability and gives the explicit expressions of the biological phase volumes. A sensitivity analysis is also presented in order to evaluate the effect of variations in the influent and effluent characteristics on the biological phase volumes.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 129 • Issue 5 • May 2003
Pages: 394 - 401
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 15, 2001
Accepted: Jun 14, 2002
Published online: Apr 15, 2003
Published in print: May 2003
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