Steady-state modeling and evaluation of partial nitrification-anammox (PNA)for moving bed biofilm reactor and integrated fixed-film activated sludge processes treating municipal wastewater

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The partial nitrification-anammox (PN/A)process can remove nitrogen from wastewater by converting approximately half of the ammonium to nitrite by ammonium oxidizing bacteria (AOB), followed by converting the remaining ammonium and nitrite to N 2 by anammox bacteria. Both the MBBR and IFAS processes can achieve the PN/A process in a single-stage reactor under appropriate operation. In this study, steady state simulation using SUMO was conducted to investigate the effects of key parameters (DO and COD/N ratio)on the PN/A process in both MBBR and IFAS. Results showed that MBBR and IFAS achieved about 90% total nitrogen removal by PN/A process with energy-efficient aeration and low COD/N ratios when treating domestic wastewater. IFAS achieved optimal nitrogen removal with lower DO concentration whereas MBBR showed better nitrogen removal at low COD/N ratio. Biomass concentration and process rates indicated that partial nitrification occurred throughout the biofilm of MBBR but mainly in the activated sludge of the IFAS.

Original languageEnglish
Article number100854
JournalJournal of Water Process Engineering
Volume31
DOIs
Publication statusPublished - Oct 2019

Keywords

  • Integrated fixed-film activated sludge (IFAS)
  • Kinetics
  • Moving bed biofilm reactor (MBBR)
  • Partial nitritation/anammox (PN/A)
  • Simulation

ASJC Scopus subject areas

  • Biotechnology
  • Safety, Risk, Reliability and Quality
  • Waste Management and Disposal
  • Process Chemistry and Technology

Fingerprint

Dive into the research topics of 'Steady-state modeling and evaluation of partial nitrification-anammox (PNA)for moving bed biofilm reactor and integrated fixed-film activated sludge processes treating municipal wastewater'. Together they form a unique fingerprint.

Cite this