Parameter calibration and simulation application of one-dimensional layered and hydraulic settler model

A one-dimensional (1D) layered and hydraulic settler model with Takács settling velocity model was constructed by the incorporation of dispersion item and density current. Evaluation indices for parameter calibration were put forward based on sludge blanket height (SBH) algorithm and the operational characteristics of settlers. A general parameter calibration protocol was advanced by empirical formula estimation together with sensitivity analysis for the settler model with multiple parameters. With parameter calibration, the settler model fits well for SS profile, overflow and underflow SS concentrations, and SBHs measured in three pilot-scale settler tests.