Algebraic equations for estimating pH and alkalinity are implemented in the model. The model uses a set of 48 state variables (21 soluble + 27 particulate) and 56 biological, chemical and physical reactions. PH estimation in both the liquid and solid streams andĮlemental mass balance for COD, C, N and P and other inorganic components like Ca, Mg, and K. Precipitation of common precipitates of Al, Fe, Ca, Mg and PO4 in the liquid and sludge streams Methylotrophic denitrification on external substrate like MethanolĪNAMMOX (Anaerobic ammonium oxidation) process Two step nitrification and denitrification processes Some major features of the model includes:Ī single set of state variables for both the liquid (Activated sludge) and solid (Anaerobic digestion) processes The Mantis2 model in GPS-X is a comprehensive bio-chemical whole plant model that allows user to analyze different wastewater treatment plant configurations for biological BOD, nitrogen and phosphorous removal, resource recovery (biogas, struvite) and side stream treatment using the deammonification process.
