Effect of carbon to nitrogen ratio on nitrogen removal in a single-stage microaerobic system: A model-based evaluation

We proposed a mechanistic model modified from the classic ASMs by incorporating inhibition coefficients of C/N ratio into process rate equations. This modified model was established based on experimental data obtained from a single-stage microaerobic reactor encompassing simultaneous nitrification-denitrification and anammox processes. Compared to the classic models, the modified one achieved superior predictions for nitrite and nitrate nitrogen concentrations.The proposed modified model served as a valuable tool for designing and optimizing similar biological wastewater treatment systems.