Verification modeling study for the influential factors of secondary clarifier

A numerical Quasi 3-D model of secondary clarifier is applied to verify the data obtained through the literature and analyze the influential factors for secondary clarifiers. The data from the papers provide the input parameters for the model. During this study, several influential factors (density waterfall; surface overflow rate; solids loading rate; solids-settling characteristics; mixed liquor suspended solid; clarifier geometry) are tested. The results show that there are some differences and consistence between the simulation data obtained from the Quasi 3-D model and the simulation outcomes revealed in the papers.