High-Rate Thickeners


Diemme® Filtration high-rate sludge thickeners are the result of many years of experience in solid-liquid separation in a wide range of industries such as mining, chemical, metallurgical, water treatment and many others. Our commitment to Research & Development has allowed us to propose innovative solutions to optimise performance and reduce plant and operating costs.


  • Quarrying & Recycling
  • Power Industry
  • Mining & Metals
  • Wastewater Treatment Plants
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Strengths of Diemme® Filtration thickeners

  • Comprehensive laboratory tests on customer samples (selection and dosage of coagulants and flocculants, static and dynamic tests, rheology, mineralogy, etc.);
  • Design of mechanical parts under the most severe conditions to ensure performance and reliability over time;
  • Optimisation of the tank’s structural design (static and dynamic analysis, seismic, FEM modelling, weight optimisation, etc.);
  • Integration of measurement and control instruments to optimise the process and reduce operating costs;
  • IIoT connectivity;
  • Extensive and customisable first-class components;
  • Global service support.
Technical sheet

Diemme® Filtration high-rate sludge thickeners achieve very high productivity and are designed to complement Diemme® Filtration filter presses.

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.

Give us a call today at 604-878-8092. Let’s discuss your unique application needs.

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