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:Up Flow - Anaerobic Sludge Blanket Reactor (UASB) reactor
Medium:Granular sludge
Culture taken from:Anammox up-flow anaerobic sludge blanket (UASB) reactor
Microorganism cultured:Candidatus Kuenenia
Respiration:Anaerobic
Electron donor:Ammonium chloride NH4Cl
Electron acceptor:Sodium Nitrite (NaNO2)
PH:7.5–7.9
Maximum sludge concentration:17.6
HRT:2–3 h
NH4–N Influent conc(mg/L):454
NO2–N Influent conc(mg/L):454
SO4–S Influent conc(mg/L):nan
NH4–N Removal efficiency (%):87.6
NO2–N Removal efficiency (%):87.6
SO4-S Removal efficiency (%):nan
NLR kg-N/m3/d:12.7
NRR kg-N/m3/d:5.72
Major findings:Results from the study provide new insights that reinforce the potential of cold anammox applications for nitrogen removal at low temperatures. After long-term operation at gradually decreasing temperature, high-performance removal of nitrogen was achieved at low temperatures.
Authors:He et al., 2018
Title:Effects of temperature on anammox performance and community structure
Pubmed link:Link
Full research link:Link
Abstract:A lab-scale anammox up-flow anaerobic sludge blanket (UASB) reactor was run to investigate the influence of temperature on anammox performance and community structure. The anammox system had a higher substrate tolerance at 13 °C than at 18 °C. The adverse effects caused by the use of a lower temperature (8 °C) could be restored. The nitrogen removal rate (NRR) decreased with decreasing in situ specific anammox activity (SAA). Interestingly, the ex situ SAA acclimated at 23 °C, when exposed to ex situ temperatures of 33 and 28 °C, was higher than for those acclimated at 33 and 28 °C. No shift was observed in the optimum temperature for ex situ SAA in the whole lowering process of anammox UASB. More extracellular polymeric substances were produced in response to cooler conditions (18 °C and 13 °C). Ca. Kuenenia became much more abundant (55.18% of the microbial community) and had a competitive advantage over other anammox bacteria (AnAOB) at 13 °C.