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:Artificial wastewater
Anammox system:nan
Anammox reactor:Anaerobic Attached-Growth Bioreactor (AAGB)
Medium:Granular sludge
Culture taken from:Sequencing Batch Reactor (SRB)
Microorganism cultured:nan
Respiration:Anaerobic
Electron donor:Ammonium chloride NH4Cl
Electron acceptor:Sodium sulfate (Na2SO4)
PH:7.8–8.5
Maximum sludge concentration:nan
HRT:nan
NH4–N Influent conc(mg/L):50
NO2–N Influent conc(mg/L):nan
SO4–S Influent conc(mg/L):57
NH4–N Removal efficiency (%):43.35
NO2–N Removal efficiency (%):nan
SO4-S Removal efficiency (%):58.74
NLR kg-N/m3/d:2.08
NRR kg-N/m3/d:73^
Major findings:Anaerobic attached-growth bioreactor applying SRB as inoculums was used to examine simultaneous removal of ammonium-nitrogen and sulphate using artificial wastewater as substrate.
Authors:Zhao et al., 2006
Title:Simultaneous removal of ammonium-nitrogen and sulphate from wastewaters with an anaerobic attached-growth bioreactor
Pubmed link:Link
Full research link:Link
Abstract:Some industrial wastewaters may contain ammonium-nitrogen and/or sulphate, which need to be removed before their discharge into natural water bodies to eliminate their severe pollution. In this paper, simultaneous removal of ammonium-nitrogen and sulphate with an anaerobic attached-growth bioreactor of 3.8 L incubated with sulphate reducing bacteria (SRB) was investigated. Artificial wastewater containing sodium sulphate as electron acceptor, ammonium chlorine as electron donor and glucose as carbon source for bacteria growth was used as the feed for the bioreactor. The loading rates of ammonium-nitrogen, sulphate and COD were 2.08 gN/m3 x d, 2.38 gS/m3 x d, 104.17 gCOD/m3 x d, respectively, with a N/S ratio of 1:1.14. The results demonstrated that removal rates of ammonium-nitrogen, sulphate and COD could reach 43.35%, 58.74% and 91.34%, respectively. Meanwhile, sulphur production was observed in effluent as well as molecular nitrogen in biogas, whose amounts increased with time substantially, suggesting the occurrence of simultaneous removal of ammonium-nitrogen and sulphate. This novel reaction provided the possibility to eliminate ammonium-nitrogen and sulphate simultaneously with accomplishment of COD removal from wastewater, making wastewater treatment more economical and sustainable.