Performance and microbial community structure of a full-scale ANITATMMox bioreactor for treating reject water located in Finland

Alejandro Gonzalez Martinez, Babara Munoz-Palazon*, Antonina Kruglova, Maija Vilpanen, Anna Kuokkanen, Anna Mikola, Mari Heinonen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The aim of this work was to study the operational performance and the microbial community dynamics during the start-up of ANITATMMox technology implemented at full-scale wastewater treatment plant in Finland to treat reject water from anaerobic digesters. The average ammonium removal in the studied setup reached around 90%, withstanding ammonium loads up to 0.13 g N m-2h-1. The nitrite concentration in the effluent did not exceed 10 mg L-1, and there was a slight accumulation of NO3--N during the operation which was controlled. Thus, the result showed a robust success to high ammonium loading in presence of organic matter. The sequencing showed a heterogeneous microbial population where Methanosaeta, WCHA1-57 genus, Sphingobacteriia, Chlorobia and diverse unknown fungi were found as dominant phylotypes. Moreover, members of the Brocadiaceae family were dominant in the adhered biomass, mostly represented by Candidatus Scalindua, rarely reported in WWTPs. Overall, the results demonstrated a drastic effect of region-specific operational conditions on carrier biofilm microbial communities as it was demonstrated by the microbial studies.
Original languageEnglish
Article number129526
JournalChemosphere
Volume271
Early online date2 Jan 2021
DOIs
Publication statusE-pub ahead of print - 2 Jan 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Anammox bacteria
  • autotrophic nitrogen removal
  • microbial ecology
  • AnitaTMMox technology
  • full scale reactor
  • reject water treatment

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