Modeling partial nitrification and denitrification in a hybrid biofilm reactor: calibration by retention time distribution and respirometric tests

Study on Nitrification and Denitrification of High Nitrogen and COD Load Wastewater in Moving Bed Biofilm Reactor

Modeling of Simultaneous Partial Nitrification, Anammox and Denitrification Process In a Single Reactor

Nomenclature: SO2 dissolved oxygen, SS readily biodegradable substrate, SNH4 ammonium nitrogen, NH4+-N, SNO2 nitrite nitrogen, NO2−-N, SNO3 nitrate, NO3−-N, SN2 dinitrogen, N2, XNH aerobic ammonium oxidizers, XNO aerobic nitrite oxidizers, XAN Anammox bacteria, XH hetertrophic organisms, X inert particulate organic material, YNH yield coefficient of XNH, YNO yield coefficient of XNO, YAN yield ...

Total Nitrogen Removal in a Completely Mixed Membrane Biofilm Reactor for Nitrification and Denitrification

A Hollow-fiber Membrane Biofilm Reactor (MBfR) was used to nitrify and denitrify synthetic wastewater to remove nitrogenous pollutants such as ammonium, nitrate, and nitrite. Aerobic and anoxic MBfRs were combined to oxidize and reduce these nitrogenous pollutions using biofilms as the catalyst for these chemical reactions. The MBfR is capable of converting ammonium (NH4) to nitrogen gas (N2), ...

Nitrogen Removal from Milking Center Wastewater via Simultaneous Nitrification and Denitrification Using a Biofilm Filtration Reactor

Milking center wastewater (MCW) has a relatively low ratio of carbon to nitrogen (C/N ratio), which should be separately managed from livestock manure due to the negative impacts of manure nutrients and harmful effects on down-stream in the livestock manure process with respect to the microbial growth. Simultaneous nitrification and denitrification (SND) is linked to inhibition of the second ni...

Development of simultaneous partial nitrification, anammox and denitrification (SNAD) process in a sequential batch reactor.

Simultaneous partial nitrification, anammox and denitrification (SNAD) process was developed in a sequential batch reactor (SBR) and the influence of hydraulic retention time (HRT) on the SNAD process was investigated. Around 96% NH(4)(+)-N removal and 87% COD removal were observed at 9 d HRT. Marginal decreases in the removal efficiencies were observed when the HRT was reduced to 3d or the loa...