SIMULATION OF SINGLE-STAGE NITRIFICATION/DENITRIFICATION. Academic Article uri icon

abstract

  • A computer simulation model of the single-stage activated sludge process has been developed to improve understanding of the interactions involved in these systems. The model is based on the structured biomass model developed by Andrews and co-workers. It separates biomass into fractions representing stored substrate, active biomass, and inactive biomass. This enables the model to better describe microbial growth and substrate uptake under non-steady-state conditions expected in intermittently aerated activated sludge basins. The model has been adapted to describe the more complicated kinetics found in single-stage nitrification/denitrification systems. Results of psuedo-steady-state simulations show the importance of the influent organic matter concentration and the solids retention time to process performance. Hydraulic retention time is shown to have little effect on effluent nitrogen concentrations when dissolved oxygen concentrations are controlled.

published proceedings

  • SAE Preprints

author list (cited authors)

  • Batchelor, B.

complete list of authors

  • Batchelor, B

publication date

  • January 1979