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.

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.

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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.

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

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Prevents the re-suspension of stored solids.

More information in the following video:

General methodology

Step 1 - Feasibility study

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

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

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

Step 2 - Design and implementation

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Design, manufacture and assembly in the workshop

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Step 3 - Delivery

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On-site delivery

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Assistance with commissioning

Strong points

• 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​