Denitrifying PAOS for low- Carbon and low-energy nutrient removal in cold weather conditions, the Ejby Mølle case study

N. Uri Carreño, P. Nielsen, T. Constantine, K. Chandran, C. Hoar, C. De Barbadillo, G. Wells

Research output: Contribution to conferencePaperpeer-review

Abstract

The Ejby Mølle WRRF (EMWRRF) in Odense, Denmark, is an example of utility challenging itself in trying to utilize the latest BNR technologies to enhance its overall efficiency. Some of the efforts towards achieving low energy and low carbon nutrient removal at the EMWRRF include: low dissolved oxygen (DO) and alternating aeration, anammox seeding from a sidestream anammox reactor, mainstream hydrocylones and chemically enhanced primary treatment, among others. This paper presents some of the results from a WERF study on low carbon and low energy nutrient removal technologies for nitrogen and phosphorus removal. During this study different experiments were made at EMWRRF during the transition winter-summer-winter operation in 2018 to investigate the seasonal differences in nitrogen and phosphorus removal. It was found that during the summer months, nitrite accumulates in the reactors and simultaneous nitrification-denitrification can be observed. Ex-situ activity tests confirmed the presence denitrifying PAOs capable to use both nitrite and nitrate. 16S amplicon sequencing results from that period show relatively high abundance of both putative DPAOs and anammox.

Original languageEnglish (US)
Pages862-870
Number of pages9
StatePublished - Jan 1 2019
Event92nd Annual Water Environment Federation's Technical Exhibition and Conference, WEFTEC 2019 - Chicago, United States
Duration: Sep 21 2019Sep 25 2019

Conference

Conference92nd Annual Water Environment Federation's Technical Exhibition and Conference, WEFTEC 2019
CountryUnited States
CityChicago
Period9/21/199/25/19

Keywords

  • Anammox
  • Low energy
  • Nitrogen removal
  • Phosphorus removal

ASJC Scopus subject areas

  • Ecological Modeling
  • Environmental Chemistry
  • Water Science and Technology
  • Pollution
  • Waste Management and Disposal

Fingerprint Dive into the research topics of 'Denitrifying PAOS for low- Carbon and low-energy nutrient removal in cold weather conditions, the Ejby Mølle case study'. Together they form a unique fingerprint.

Cite this