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Benchmarking nitrogen removal suspended-carrier biofilm systems using dynamic simulation.

H Vanhooren1, Z Yuan, P A Vanrolleghem

  • 1BIOMATH, Ghent University, Gent, Belgium. h.vanhooren@epas.be

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|September 10, 2002
PubMed
Summary

Attached growth processes (AGP) using biomass-supporting media offer optimized biological nitrogen removal in wastewater treatment. Dynamic simulations quantitatively validate AGP advantages over activated sludge, assessing economic feasibility and effluent quality.

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Area of Science:

  • Environmental Engineering
  • Microbiology
  • Wastewater Treatment Technologies

Background:

  • Biological nitrogen removal from wastewater is increasingly critical.
  • Traditional activated sludge systems face challenges beyond carbon removal.
  • Biomass-supporting media offer potential for optimized attached growth processes (AGP).

Purpose of the Study:

  • To quantitatively evaluate attached growth processes (AGP) for biological nitrogen removal.
  • To validate the advantages of AGP using dynamic simulations and a biofilm model.
  • To assess the economic feasibility of AGP compared to activated sludge systems.

Main Methods:

  • Dynamic simulations were employed to model attached growth processes (AGP).
  • A biofilm model was integrated into a simulation benchmark for activated sludge systems.

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  • Economic feasibility was assessed by comparing capital savings (volume, sludge) with operational costs (aeration), including effluent quality.

    • Main Results:

    • Dynamic simulations quantitatively validated the advantages of AGP for biological nitrogen removal.
    • The integrated biofilm model allowed for fast and accurate substrate conversion simulations.
    • Economic analysis indicated potential capital savings balanced against increased aeration costs.

    Conclusions:

    • Attached growth processes (AGP) present a viable and quantitatively validated approach for enhanced biological nitrogen removal.
    • Dynamic simulations with advanced biofilm modeling provide robust tools for process design and economic evaluation.
    • AGP systems offer a promising alternative for wastewater treatment, with careful consideration of aeration costs and effluent quality.