top of page

Trapping sands: Bed load trap  



Trapping and storing only the solid elements transported with the effluents in order to avoid the inconveniences caused by the accumulation of organic matter and grease in a traditional grit chamber.

Piège à sable, piège à cailloux, dessableur, chambre à sable
Piège à sable, piège à cailloux, dessableur, chambre à sable

Typical inconveniences of a grit chamber: grease retention, H2S generation, resuspension of trapped particles


A more compact and better-performing solution compared to traditional grit chambers.

The 3D EAU solution

Trapping of mineral matter using a calibrated opening to minimise resuspension while avoiding the accumulation of grease and floating debris in the trap.

Prevents the accumulation of organic matter, grease and floating debris.


Optimises the size and cost of the storage facility with better flow management.


Prevents the re-suspension of stored solids.

Piéger les matières minérale

More information in the following video:

3DEAU, autosurveillance, modélisation 3D

General methodology

Step 1 - Feasibility study

Taking into account the actual hydraulic environment of the upstream network.


Characterisation of the hydrodynamics and solid transport in the network, good integration of the equipment in the existing environment.


Possible optimisation of an existing grit chamber by fitting a transit channel to it.


Step 2 - Design and implementation

Design, manufacture and assembly in the workshop

Step 3 - Delivery

On-site delivery

Assistance with commissioning


Strong points

Charte graphique 3D EAU.bmp
  • Prevent the floatation of grease and the accumulation of floating debris

  • Guarantees the trapping and storage of solid particles without resuspension

  • Limits operational constraints

  • Optimises the cost​

These topics may also be of interest to you 

bottom of page