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:Upflow biofilter (UBF) reactor
Medium:nan
Culture taken from:Full-scale wastewater treatment plant treating monosodium glutamate wastewater
Microorganism cultured:Brocadi anammoxidans
Respiration:Anaerobic
Electron donor:Ammonium sulfate ((NH4)2SO4)
Electron acceptor:Sodium Nitrite (NaNO2)
PH:7.0–8.0
Maximum sludge concentration:1.8
HRT:1.54 h
NH4–N Influent conc(mg/L):976
NO2–N Influent conc(mg/L):1280
SO4–S Influent conc(mg/L):nan
NH4–N Removal efficiency (%):88.84
NO2–N Removal efficiency (%):98.1
SO4-S Removal efficiency (%):nan
NLR kg-N/m3/d:34.5
NRR kg-N/m3/d:nan
Major findings:Key factors for bacterial growth and high performance Anammox process were determined through effective granulation, biofilm development and promotion of sludge activity by means of appropriate recirculation at relative high temperature (35 °C)
Authors:Chen et al., 2010
Title:Promoting sludge quantity and activity results in high loading rates in Anammox UBF
Pubmed link:None
Full research link:Link
Abstract:The anaerobic ammonium oxidation (Anammox) was successfully started up in an upflow biofilm (UBF) reactor and operated for 435 days at 35 °C. The process development could be divided into four phases, i.e. endogenous denitrification without Anammox reaction (P1), functional biomass enrichment under relatively low nitrogen loading rate (NLR) (P2), specific Anammox activity (SAA) enhancement with high NLR (P3) and the final stable stage (P4). The maximal NLR was as high as 34.5 kg N/m3d. Nitrogen mass balance showed that 88.84% of input nitrogen converted to dinitrogen gas, 1.74% was used for cellular synthesis and the rest was converted to nitrate. The final produced biomass was fast-growing with SAA of 1.8 g N/gVSS d and doubling time of 4.3–7.4 d. Granulation and biofilm formation contributed to the biomass enrichment, while appropriate recirculation as well as relatively high temperature (35 °C) helped to promote SAA. Effective retention time and promoted sludge activity were considered as the key factors for bacterial growth and efficient Anammox process.