Analyzing a Malfunctioning Clarifier with COMSOL’s Mixture Model

A. de Niet, A. van Nieuwenhuijzen, and A. Geilvoet
Witteveen+Bos, Deventer, The Netherlands
Publié en 2008

Clarifiers are used to separate sludge and water in waste water treatment plants. In this paper we analyze a malfunctioning clarifier using the mixture model.

We are able to receive model results that are reasonably close to measurements from the real clarifier. With the model we can explain the bad separation of water and sludge in the clarifier.

Engineers have proposed several actions in order to improve the performance of the clarifier, which were all applied to the model. It appears that a slight increase in flock diameter of the sludge is the most effective action.

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