APPLICATION STUDY OF A DRAFT-TUBE-TYPE REACTOR TO NITRIFICATION-DENITRIFICATION PROCESS

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 ...

Simultaneous nitrification-denitrification in a sequencing batch reactor equipped with fixed Kaldnes carriers

The main aim of this study was to evaluate the performance of a modified sequencing batch reactor (MSBR) using fixed Kaldnes carriers fed with acclimated sludge for ammonium removal via simultaneous nitrification-denitrification (SND) in synthetic wastewater. The results exhibited a SND of 82.3% within a 450-minute cycle time which was higher than that of a SBR without carrier (69.83%). Nitrite...

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...

A New Developed Airlift Reactor Integrated Settling Process and Its Application for Simultaneous Nitrification and Denitrification Nitrogen Removal

This study presented the performance of simultaneous nitrification and denitrification (SND) process using a new developed hybrid airlift reactor which integrated the activated sludge reaction process in the airlift reactor and the sludge settling separation process in the clarifier. The proposed reactor was started up successfully after 76 days within which the COD and total nitrogen removal r...

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