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:Pilot-scale Granular sludge reactor
Medium:Nitrifying granular sludges
Culture taken from:Nitrifying granular sludges taken from Rotterdam-Dokhaven wastewater treatment plant
Microorganism cultured:Brocadia anammoxidans
Respiration:Anaerobic
Electron donor:Ammonium chloride NH4Cl
Electron acceptor:Sodium Nitrite (NaNO2)
PH:8
Maximum sludge concentration:nan
HRT:0.7 d
NH4–N Influent conc(mg/L):120
NO2–N Influent conc(mg/L):600
SO4–S Influent conc(mg/L):nan
NH4–N Removal efficiency (%):nan
NO2–N Removal efficiency (%):nan
SO4-S Removal efficiency (%):nan
NLR kg-N/m3/d:7.1
NRR kg-N/m3/d:7.1
Major findings:For the first time, the startup could be successfully monitored with Q-PCR during the periods when conversion did not give a clear proof of anammox activity yet.
Authors:van der Star et al., 2007
Title:Startup of reactors for anoxic ammonium oxidation: experiences from the first full-scale anammox reactor in Rotterdam
Pubmed link:Link
Full research link:Link
Abstract:The first full-scale anammox reactor in the world was started in Rotterdam (NL). The reactor was scaled-up directly from laboratory-scale to full-scale and treats up to 750 kg-N/d. In the initial phase of the startup, anammox conversions could not be identified by traditional methods, but quantitative PCR proved to be a reliable indicator for growth of the anammox population, indicating an anammox doubling time of 10-12 days. The experience gained during this first startup in combination with the availability of seed sludge from this reactor, will lead to a faster startup of anammox reactors in the future. The anammox reactor type employed in Rotterdam was compared to other reactor types for the anammox process. Reactors with a high specific surface area like the granular sludge reactor employed in Rotterdam provide the highest volumetric loading rates. Mass transfer of nitrite into the biofilm is limiting the conversion of those reactor types that have a lower specific surface area. Now the first full-scale commercial anammox reactor is in operation, a consistent and descriptive nomenclature is suggested for reactors in which the anammox process is employed.