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:Strong ammonium-containing synthetic wastewater
Anammox system:nan
Anammox reactor:Expanded granular sludge bed (EGSB) reactor
Medium:Granular sludge
Culture taken from:Anammox granular sludge was collected from a lab-scale Anammox reactor
Microorganism cultured:Candidatus Kuenenia stuttgartiensis
Respiration:Anaerobic
Electron donor:Ammonium chloride NH4Cl
Electron acceptor:Sodium Nitrite (NaNO2)
PH:6.8–7.0
Maximum sludge concentration:31.31
HRT:1.5 h
NH4–N Influent conc(mg/L):661.9
NO2–N Influent conc(mg/L):767.2
SO4–S Influent conc(mg/L):nan
NH4–N Removal efficiency (%):71.7
NO2–N Removal efficiency (%):94.1
SO4-S Removal efficiency (%):nan
NLR kg-N/m3/d:22.87
NRR kg-N/m3/d:18.65
Major findings:Anammox-EGSB reactor is suitable to treat strong ammonium-containing wastewaters. Anammox granular sludge displayed excellent Anammox activity. ) Anammox granular sludge possessed great substrate affinity and excellent substrate tolerance.
Authors:Chen et al., 2011
Title:Kinetic characteristics and microbial community of Anammox-EGSB reactor
Pubmed link:Link
Full research link:Link
Abstract:The present study reports kinetic characteristics of Anammox (anaerobic ammonium oxidation) EGSB (Expanded Granular Sludge Bed) reactor after feeding with strong ammonium-containing synthetic wastewater. The microbial communities were analysed based on their 16S rRNA gene sequences. The results showed that the volumetric nitrogen loading rate (NLR) and volumetric nitrogen removal rate (NRR) reached up to 22.87 kg N/(m(3)d) and 18.65 kg N/(m(3)d), respectively, when the influent nitrogen concentrations were 1429.1mg N/L. Monod and Haldane models both proved to be suitable in characterizing the kinetic behavior of the reactor. Based on Haldane model, the relationships among the ammonium, nitrite, nitrogen conversion rates and substrate concentrations were established with corresponding correlation coefficients of 0.992, 0.993 and 0.993, respectively. The maximum ammonium, nitrite and nitrogen conversion rates (q(max)) by the granular sludge were 381.2, 304.7 and 731.7 mg N/(gVSSd), half saturation constants (K(s)) were 36.75, 0.657 and 29.26 mg N/L and inhibition constants (K(i)) were 887.1, 13,942.1 and 1779.6 mg N/L, respectively. Anammox-EGSB reactor was found tolerant to substrate and capable of treating strong ammonium-containing wastewater. The dominant microbial population of the granular sludge in the reactor was Candidatus Kuenenia stuttgartiensis.