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:Real wastewater
Comammox System:MBfR coupling anammox and n-DAMO
reactor:MBfR (biofilm)
Medium:Biofilm-suspended-growth
Culture taken from:Enriched n-DAMO culture
Microorganism cultured:n-DAMO archaea and n-DAMO bacteria
Respiration:Anaerobic
Electron donor:Methane
Electron acceptor:Nitrite
PH:7.3–7.8
Temperature:35°C
HRT:nan
NH4–N Influent conc(mg/L):nan
NO2–N Influent conc(mg/L):nan
NO3–N Influent conc(mg/L):nan
NH4–N Effluent (mg N/L):nan
NO2–N Effluent (mg N/L):nan
NO3-N Effluent (mg N/L):nan
NH4–N removal rate mg/L/d:40
NO2–N removal rate mg/L/d:nan
NO3-N removal rate mg/L/d:90
TN Removal rate (mg N/L/d):nan
Authors:Yang et al., 2007
Title:Nitrogen Removal via Nitrite from Municipal Wastewater at Low Temperatures using Real-Time Control to Optimize Nitrifying Communities
Pubmed link:None
Full research link:Link
Abstract:Although many studies regarding nitrogen removal via nitrite have been carried out, very limited research has been undertaken on nitrogen removal via nitrite at low temperatures. In this study, to improve the nitrogen removal efficiency from municipal wastewater, a pilot-plant of sequencing batch reactor with a working volume of 54 m3 was used to investigate nitrogen removal via nitrite from municipal wastewater at normal and low water temperature. The obtained results showed that high nitrogen removal efficiency with effluent total nitrogen below 3 mg/L could be achieved. Using real-time control with temperature ranging from 11.9 to 26.5 °C under normal dissolved oxygen condition (?2.5 mg/L), nitrogen removal via nitrite was successfully and stably achieved for a long period (180 days) with average nitrite accumulation rate above 95%. Fluorescence in situ hybridization was carried out to investigate the quantitative changes of nitrifying microbial community in the activated sludge. Fluorescence in situ hybridization results approved that the nitrifying microbial communities were optimized; ammonia oxidizing bacteria became the dominant nitrifying bacteria and nitrite oxidizing bacteria had been washed out of the activated sludge.