Secondary settler (clarifier) design optimisation with CFD

Secondary clarifiers (or settlers) can be optimised using computational fluid dynamics (CFD). Inlet structure (energy dissipation well) and sludge removal mechanism can be designed using sludge solids and liquid modelling using density currents.

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Optimal effluent quality and settler reliability

We use computational fluid dynamics (CFD) simulation for optimisation, design and retrofit of secondary settlers (secondary clarifiers). Different inlet structures, baffles and scrapers can be tested with simulation, and settlers can be stress-tested with different MLSS concentrations and flow rates.

Major variables we assess

Sludge blanket height and velocity profiles in supernatant
Solids profile as function of depth
Optimal removal of settled sludge at the bottom of the settler

We can easily vary:

Design factors such as shapes, baffles, inlet structures, ...
Operational variables such as MLSS concentration and flow rates

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