Competitiveness Evaluation for Individual Growth in Hybrid Processes
Publication: Journal of Environmental Engineering
Volume 125, Issue 2
Abstract
This paper presents a complete list of three sets of indicators, involving biomass partitions, substrate removed partitions, and specific substrate-utilization rates for each growth (qsus and qatt) in hybrid processes. These indicators incorporate concepts of mass conservative principles, suspended-growth Monod kinetics, and steady-state biofilm growth kinetics, which includes mechanisms of substrate flux, biofilm detachment, and bacterial decay. These indicators are more appropriate than conventional ones in terms of evaluating the competitive capabilities of suspended and attached biomass, respectively, in any completely mixing steady-state biological process. Based on these indicators, experiments are performed to investigate various competitions in a rotating biological contactor, where individual competitiveness is quantified using experimental measurements and model predictions. Experimental results indicate that the measured competitiveness agrees with model predication, demonstrating the applicability of these indicators. These indicators can be applied extensively in engineering practice, such as in rapidly determining bs using indicators of substrate partitions and in controlling optimum operation of a hybrid biological process, smallest effluent substrate concentration, and least substrate resistance in biofilms, by referring to qsus and qatt.
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Published In
Journal of Environmental Engineering
Volume 125 • Issue 2 • February 1999
Pages: 146 - 152
History
Received: Aug 15, 1997
Published online: Feb 1, 1999
Published in print: Feb 1999
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