We have recently started work to replace Tube Modules for a Lamella Clarifier originally built in 1991. The clarifier handles wastewater produced by a Combined Heat & Power plant.

Tube Modules installed in a clarifier

Advantages of Tube Modules

Tube modules improve the efficiency of solids removal by:

  • Ensuring laminar flow across the whole surface area of the tank. Local areas of high upward velocity prevent efficient settlement.
  • Increase the effective area for solids settlement, typically by 8:1
  • Allow small solids that do not settle easily to flocculate with each other, after which they then settle.
  • Minimising the floor area that you need to allocate for settlement

The efficiency of H+E’s Tube Modules has been proven over more than 40 years. They are used in many hundreds of plants across Europe.

Strong and Long-lasting

Each tube within the modular pack is inclined at 60°. Each row or tube is inclined in the opposite direction to its neighbour rows. This ensures that flow distribution across the tank is good and also makes the Tube Modules strong.

They are fabricated in ABS, so they are light, and are easily lifted by two people. This also means that they have a log service life.

The tubes themselves have a square cross-section. This means that, since there are no “tight” angles, solids do not easily get trapped within the tubes, which would decrease efficiency.

Tube modules are often retro-fitted into existing clarifiers to increase their operational efficiency.


They can be used in more or less every application where high efficiency settlement of solids is required. This covers more or less every industrial application.

Please contact us and we will be happy to discuss your specific requirements.