https://doi.org/10.25678/00053F

Data for: Successful mainstream nitritation through NOB inactivation

The development of new wastewater treatment processes can assist in reducing the impact of wastewater treatment on the environment. The recently developed partial nitritation anammox (PNA) process, for example, consumes less energy for aeration and reduces nitrate in the effluent without requiring additional organic carbon. However, achieving stable nitritation (ammonium oxidation; NH4+ -> NO2-) at mainstream conditions (T = 10–25°C, C:N > 10, influent ammonium < 50 mgNH4-N/L and effluent NO3-) occurred occasionally until an anaerobic phase was integrated into the operating cycle. The introduction of the anaerobic phase effectively suppressed the regrowth of NOB and nitritation was stable over 300 days, down to 8 °C and at ammonium influent concentrations < 25 mgNH4-N/L. Batch experiments and process data revealed that parameters typically affecting NOB growth (e.g., dissolved oxygen, alkalinity, trace elements, lag-phase after anoxia, free nitrous acid (FNA), free ammonia (FA), pH, sulfide, or solids retention time (SRT)) could not fully explain the suppression of nitratation. Experiments in which fresh nitrifying microbial biomass was added to the nitritation system indicated that NOB inactivation explained NOB suppression better than NOB washout at high SRT. This study concludes that bottom-fed SBRs with anaerobic phases allow for stable nitritation over a broad range of operational parameters. Coupling this type of SBR to an anammox reactor can enable efficient mainstream anammox-based wastewater treatment.

Dataset extent

Data and Resources

Citation

This Data Package

Hausherr, D., Niederdorfer, R., Bürgmann, H., Lehmann, M., Magyar, P., Mohn, J., et al. (2021). Data for: Successful mainstream nitritation through NOB inactivation (Version 1.0) [Data set]. Eawag: Swiss Federal Institute of Aquatic Science and Technology. https://doi.org/10.25678/00053F

The associated article

Hausherr, D., Niederdorfer, R., Bürgmann, H., Lehmann, M. F., Magyar, P., Mohn, J., et al. (2022). Successful mainstream nitritation through NOB inactivation. Science of The Total Environment, 822, 153546. https://doi.org/10.1016/j.scitotenv.2022.153546

Metadata

Open Data Open Data
Long-term data Long-term data
Author(s)
  • Hausherr, Damian
  • Niederdorfer, Rober
  • Bürgmann, Helmut
  • Lehmann, Moritz
  • Magyar, Paul
  • Mohn, Joachim
  • Morgenroth, Eberhard
  • Joss, Adriano
Keywords Municipal wastewater,Nitritation,Anaerobic,Plug-flow,NOB inactivation
Variables
  • ammonium-nitrogen
  • bacteria_abundance
  • dissolved_oygen
  • grain_size
  • growth_rate
  • oxidation_kinetcis
Substances (scientific names)
  • Allylthiourea (InChI=1S/C4H8N2S/c1-2-3-6-4(5)7/h2H,1,3H2,(H3,5,6,7))
Substances (generic terms)
  • inhibitors
  • nutrients
  • wastewater
Organisms (generic terms)
  • Bacteria
  • Sludge
Systems
  • Reactor
  • Wastewater
Timerange
  • 2019-06 TO 2020-06
Geographic Name(s)
  • Eawag
Review Level none
Curator Hausherr, Damian
Contact Joss, Adriano <Adriano.Joss@eawag.ch>
DOI 10.25678/00053F