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:Effluent from a secondary clarifier, from Gaobeidian wastewater treatment plant (WWTP)
Anammox system:nan
Anammox reactor:Up Flow - Anaerobic Sludge Blanket Reactor (UASB) reactor
Medium:Wood based powder activated carbon (PAC)
Culture taken from:Activated sludge obtained from Jiuxianqiao wastewater treatment plant (WWTP, located in Beijing, China)
Microorganism cultured:nan
Respiration:Anaerobic
Electron donor:Ammonium chloride NH4Cl
Electron acceptor:Sodium Nitrite (NaNO2)
PH:nan
Maximum sludge concentration:4.89
HRT:0.28 h
NH4–N Influent conc(mg/L):16.87 ± 2.09
NO2–N Influent conc(mg/L):20.57 ± 2.31
SO4–S Influent conc(mg/L):nan
NH4–N Removal efficiency (%):78.45
NO2–N Removal efficiency (%):92.31
SO4-S Removal efficiency (%):nan
NLR kg-N/m3/d:nan
NRR kg-N/m3/d:2.28
Major findings:High nitrogen removal performance was obtained from the anammox UASB reactor treating low strength wastewater under moderate and low temperatures. Emission of the greenhouse gas N2O was very low from the anammox UASB reactor treating low strength wastewater.
Authors:Ma et al., 2013
Title:Performance of anammox UASB reactor treating low strength wastewater under moderate and low temperatures
Pubmed link:Link
Full research link:Link
Abstract:An integrated approach to enhance and maintain high anammox activity and abundance in an upflow anaerobic sludge blanket (UASB) treating low strength wastewater under moderate and low temperatures was developed. A quantitative PCR assay showed the abandance of anammox bacteria to be 1.68±0.08×10(9) copies/ml in mixed liquor when the temperature was 30 °C and was maintained at the level of 1.93±0.41×10(9) copies/ml in mixed liquor at 16 °C. A nitrogen removal rate (NRR) of up to 5.72 kg N/m3/d was achieved with a hydraulic retention time (HRT) of 0.12 h at 30 °C, while nitrite and ammonium removal efficiencies were 94.35% and 92.81%, respectively. NRR decreased with a decrease in temperature and was maintained at 2.28 kg N/m3/d with an HRT of 0.28 h when at 16 °C, while nitrite and ammonium removal efficiencies were 92.31% and 78.45%, respectively. The emission rate of the greenhouse gas N2O was below 0.006% of the NRR in the anammox UASB reactor treating low strength wastewater.