Simulation of a novel strategy for improving a biological phosphorus removal system start-up

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This work analyses (by means of simulation) the effect of reducing the length of the aerobic phase in the start-up of an Enhanced Biological Phosphorus Removal (EBPR) process conducted in a sequencing batch reactor system. This new control strategy is based on finishing the aerobic phase when phosphorus is depleted from the medium. Two scenarios were simulated: one with fixed aerobic phase (usual EBPR operation) and the other with a variable aerobic phase length linked to phosphorus presence (novel strategy presented in this work). After thirty days of start-up simulation, the results revealed that the ratio of polyphosphate accumulating organisms to ordinary heterotrophic organisms was 90% higher than in the variable aerobic phase length scenario. According to the simulations performed in this work, this control strategy allowed achieving higher net phosphorus removal capacity. © 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)475-480
JournalComputer Aided Chemical Engineering
Issue numberC
Publication statusPublished - 1 Dec 2005


  • Aerobic phase length
  • Enhanced Biological Phosphorus Removal
  • Polyphosphate Accumulating Organisms
  • Sequencing Batch Reactor


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