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Table 1

Biokinetic and reactor parameters used in the modelling biofilm reactor

ParameterSymbolUnitValue
Feed concentration Sb0 kg/m3 60 
Yield coefficient kg VSS/kg COD 0.0234 
Monod maximum utilization rate kg COD/kg VSS.d 5.8 
Monod half velocity coefficient Ks kg COD/m3 0.83 
Decay coefficient d−1 0.0157 
Shear loss coefficient bs d−1 0.095 
Diffusion coefficient Df m2/d 0.000082 
Film transfer coefficient Kf m/d 0.25 
Biofilm density Xf kg VSS/m3 0.00147 
Initial concentration of suspend biomass Xb0 kg VSS/m3 0.3 
Initial biofilm thickness Lf0 0.00005 
Reactor porosity ɛ  0.7 
Effective reactor volume m3 0.0015 
Influent flow rate m3/d 0.0001 
Total surface area support m2 0.00236 
ParameterSymbolUnitValue
Feed concentration Sb0 kg/m3 60 
Yield coefficient kg VSS/kg COD 0.0234 
Monod maximum utilization rate kg COD/kg VSS.d 5.8 
Monod half velocity coefficient Ks kg COD/m3 0.83 
Decay coefficient d−1 0.0157 
Shear loss coefficient bs d−1 0.095 
Diffusion coefficient Df m2/d 0.000082 
Film transfer coefficient Kf m/d 0.25 
Biofilm density Xf kg VSS/m3 0.00147 
Initial concentration of suspend biomass Xb0 kg VSS/m3 0.3 
Initial biofilm thickness Lf0 0.00005 
Reactor porosity ɛ  0.7 
Effective reactor volume m3 0.0015 
Influent flow rate m3/d 0.0001 
Total surface area support m2 0.00236 
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