Optimization of nitrogen removal for alternating intermittent aeration-type activated sludge system: A new process modification

Guclu Insel*, Seval Sözen, Serden Başak, Derin Orhon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A new activated sludge process modification was proposed for intermittent aeration process to achieve more stable nitrogen removal performance. A single completely mixed reactor was divided into two compartments in series and operated in intermittent aeration mode by using activated sludge simulation model. The new configuration provided competetive advantage on nitrification as well as denitrification capacity, compared to the intermittently aerated system with a single reactor. In addition, the dissolved oxygen set-point control during air-on periods was found to be an important parameter in terms of nitrogen removal.

Original languageEnglish
Pages (from-to)1819-1829
Number of pages11
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume41
Issue number9
DOIs
Publication statusPublished - 1 Sept 2006

Keywords

  • Activated sludge modeling
  • Aerated fraction
  • Aeration control
  • Cycle time ratio
  • Denitrification
  • Intermittent aeration
  • Nitrification

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