Dynamic experiments with high bisphenol-A concentrations modelled with an ASM model extended to include a separate XOC degrading microorganism

Erik Ulfson Lindblom, Kåre Press-Kristensen, P.A. Vanrolleghem, Peter Steen Mikkelsen, Mogens Henze

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The perspective of this work is to develop a model, which can be used to better understand and optimize wastewater treatment plants that are able to remove xenobiotic organic compounds (XOCs) in combination with removal of traditional pollutants. Results from dynamic experiments conducted with the endocrine disrupting XOC bisphenol-A (BPA) in an activated sludge process with real wastewater were used to hypothesize an ASM-based process model including aerobic growth of a specific BPA-degrading microorganism and sorption of BPA to sludge. A parameter estimation method was developed, which simultaneously utilizes steady-state background concentrations and dynamic step response data, as well as conceptual simplifications of the plant configuration. Validation results show that biodegradation of BPA is sensitive to operational conditions before and during the experiment and that the proposed model structure is capable of capturing important characteristics of the observed BPA removal, thus increasing the potential for generalizing knowledge obtained from plant specific experiments.
Original languageEnglish
JournalWater Research
Volume43
Issue number13
Pages (from-to)3169-3176
ISSN0043-1354
DOIs
Publication statusPublished - 2009

Keywords

  • Bisphenol-A
  • Activated sludge
  • Model
  • Xenobiotic organic compound
  • Parameter estimation
  • Wastewater

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