Simulation of Lamella Clarifiers

What are the benefits of hydrograv-Simulationen?

Lamella clarifiers are used for the separation of particles from liquids. They consist of a series of inclined parallel plates or tubes. The feed stream flows upward between them. The solids settle downwards onto the surface area provided by the plates or tubes and then sliding down towards the bottom of the tank. Uniform flow is essential for optimum function. This is not always the case. With hydrograv simulations the inflow and outflow can be verified and optimised in a targeted manner.

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Lamella separators in a storm water overflow basin

In addition to the hydraulic distribution within the lamellae the separation rate of various particle with different settling characteristics is also investigated.

Figure: Concentration and particle transit at different locations in a storm water overflow basin.

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Simulation of lamella separators in a drinking water treatment plant

Figure: Concentration and upward velocities at the bottom of lamella separators in a drinking water treatment facility.

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Simulation of lamella separators in a secondary clarifier

Figure: Active sludge concentration (sludge bed) below the lamella separators at the end of rectangular secondary clarifier.