Sludge Thickeners

The sludge thickeners can be produced in sizes up to and exceeding 40 m in diameter and “Bridge” or “Column” versions are available . Depending on project specifications, they can be made entirely of carbon steel, stainless steel (with or without a rubber lining) or with a concrete tank.

From a process point of view, the performance of the sludge thickener is dependent on the ability of the system to bind the solid particles to the flocculant. This occurs in the heart of the sludge thickener, represented by its feedwell. Inside the feedwell, the incoming current provides the necessary mixing energy for the solids to agglomerate to form flocs which then settle to the bottom of the tank. It is a complex design that requires the application of CFD modelling, which is included in the skillset of Diemme® Filtration technical staff.

The result is optimised flocculant consumption, high supernatant clarity and a constant density of thickened sludge.