Record number :
18133
Title of article :
ACTIVATED SLUDGE SYSTEM MODELLING AND SIMULATIONS FOR IMPROVING THE EFFLUENT WATER QUALITY
Author/Authors :
Cheng، Chia-Yau نويسنده , , Ribarova، Irina نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 1999
Pages :
-92
From page :
93
To page :
0
Abstract :
A dynamic model that describes the biodegradation of secondary substrates through oxygenase reactions in biofilms has been developed. The model incorporates intracellular reducing power, in the form of NADH, as a link between the rate of utilization of primary substrates and the biodegradation of secondary substrates. The reaction kinetics were integrated into a diffusive biofilm model with internal and external mass transfer limitations and then combined into a continuous flow reactor model. Preliminary evaluation of the model has demonstrated that mass transfer limitations substantively reduced the removal of the secondary substrate as compared to a suspended growth reactor with an equivalent mass of biomass. A sensitivity analysis revealed that model predictions of the removal of secondary substrate were highly sensitive to the parameters describing the availability of reducing power and to the compound-specific biodegradation kinetic parameters.
Keywords :
Activated sludge system , Modelling , nitrogen removal , simulation , Verification , calibration
Journal title :
Water Science and Technology
Journal title :
Water Science and Technology
Serial Year :
1999
Link To Document :
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