Modeling and computational simulation of dilution and biochemical materials balance equations for partially emptied batch reactors

Sequencing batch reactors (SBRs) including aerobic SBRs and anaerobic SBRs (ASBRs) are partially emptied batch reactors that are widely used as bioprocesses in pollution control. We present dilution and biochemical materials balance modeling equations and simulation results for the partially emptied...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 2007, Vol.136 (1), p.97-118
Main Authors: NDON, Udeme J, ZHAO, Jin C, LARROYA SIGUAN, Marta
Format: Article
Language:English
Subjects:
Aerobiosis
Anaerobiosis
Bacteria - metabolism
Batch processing
Batch reactors
Biochemistry
Biodegradation, Environmental
Biological and medical sciences
Bioreactors
Biotechnology
Computer Simulation
Fundamental and applied biological sciences. Psychology
Kinetics
Models, Biological
Pollution control
Reactors
Studies
Waste Disposal, Fluid
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Summary:Sequencing batch reactors (SBRs) including aerobic SBRs and anaerobic SBRs (ASBRs) are partially emptied batch reactors that are widely used as bioprocesses in pollution control. We present dilution and biochemical materials balance modeling equations and simulation results for the partially emptied batch reactors, especially for ASBR treatment of low-strength wastewater. The simulated substrate and microbial concentrations for both dilution and materials balance equations follow the same pattern during both feeding and reaction times. However, the results of the materials balance equations show microbial activities during feeding as well as during reaction times and were found to be more appropriate for the biologic system in which substrate removal is associated with microbial growth. Furthermore, the simulation results point to the need to foster high microbial accumulation in the system during startup to optimize the process performance and the need to operate the system at a short reaction time, especially for low substrate concentrations. The results were found to be in agreement with the results of prior laboratory studies.
ISSN:0273-2289
1559-0291
DOI:10.1007/BF02685941