Would a two-stage N-removal be a suitable technology to implement at full scale the use of anammox for sewage treatment?

J. Pérez, E. Isanta, J. Carrera

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

© 2015 IWA Publishing. Sewage treatment with anammox could be implemented through a two-step reactor system, where the first reactor would be devoted to partial nitritation. A process design was sketched including control loops. The control strategy regulates the flow-rate of the rich ammonium sidestream produced after dewatering the digested sludge, to keep the ammonium concentration at a set point in the partial nitritation reactor by DOsing the SIde Stream (DOSIS). A second control loop manages the ammonium concentration set point based on the measurement of the total nitrogen in the partial nitritation reactor. A mathematical model was developed to assess the amount of sidestream required. Even in the case of a strong diurnal variability, simulations show how the control strategy is correctly performing, demonstrating the potential of the proposed technology.
Original languageEnglish
Pages (from-to)858-864
JournalWater Science and Technology
Volume72
Issue number6
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Diurnal variability
  • Dosing sidestream
  • Mainstream
  • Nitrite-oxidizing bacteria (NOB) repression
  • Partial nitritation
  • Reject water

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