Biological Nitrogen Removal Database
A manually curated data resource for microbial nitrogen removal
Biological Nitrogen Removal Database
A manually curated data resource for microbial nitrogen removal
Influent:Synthetic wastewater
Anammox system:nan
Anammox reactor:Sequencing batch reactor (SBR)
Medium:Granular sludge
Culture taken from:nan
Microorganism cultured:Candidatus Brocadia, C. Scalindua
Respiration:Anaerobic
Electron donor:Ammonium sulfate ((NH4)2SO4)
Electron acceptor:Sodium Nitrite (NaNO2)
PH:7.8
Maximum sludge concentration:7.9
HRT:0.9–1.3 d
NH4–N Influent conc(mg/L):nan
NO2–N Influent conc(mg/L):nan
SO4–S Influent conc(mg/L):nan
NH4–N Removal efficiency (%):87
NO2–N Removal efficiency (%):nan
SO4-S Removal efficiency (%):nan
NLR kg-N/m3/d:nan
NRR kg-N/m3/d:0.2
Major findings:The study of the PN-AMX process with industrial saline wastewater indicated that after a short salt shock (4 days at 16 g NaCl/L) the anammox bacteria can quick restore their activity in few days.
Authors:Val del Rio et al., 2018
Title:Performance and microbial features of the partial nitritation-anammox process treating fish canning wastewater with variable salt concentrations
Pubmed link:Link
Full research link:Link
Abstract:The partial nitritation-anammox (PN-AMX) process applied to wastewaters with high NaCl concentration was studied until now using simulated media, without considering the effect of organic matter concentration and the shift in microbial populations. This research work presents results on the application of this process to the treatment of saline industrial wastewater. Obtained results indicated that the PN-AMX process has the capability to recover its initial activity after a sudden/acute salt inhibition event (up to 16 g NaCl/L). With a progressive salt concentration increase for 150 days, the PN-AMX process was able to remove the 80% of the nitrogen at 7-9 g NaCl/L. The microbiological data indicated that NaCl and ammonia concentrations and temperature are important factors shaping PN-AMX communities. Thus, the NOB abundance (Nitrospira) decreases with the increase of the salt concentration, while heterotrophic denitrifiers are able to outcompete anammox after a peak of organic matter in the feeding.