Screws for screenings
The transport and compacting screws ensure the continuous removal of extracted waste, while limiting nuisances, the volumes to be disposed of and operating interventions.
FB PROCÉDÉS designs and manufactures screws specifically adapted for the transport and compacting of de-grillage debris, taking into account the hydraulic, mechanical and environmental constraints inherent in wastewater treatment facilities.
The role of screws in the handling of refuse from the de-grating process
Transport of refusals upon exit bar screen
After the de-grating, the rejects must be evacuated reliably and continuously from the outlet chute of the bar screen.
The screw ensures controlled mechanical transport, even with heterogeneous waste composed of fibrous or organic materials.
Drainage, conveying and volume reduction
Depending on the configuration, the screw can provide:
- the convoying of rejects to a storage area or a compacting machine
- a first drainage of the waste
- or a volume reduction through compaction, which allows to limit the costs of treatment and disposal.
Issues of exploitation in the wastewater treatment plant
Equipment dedicated to refuse handling must meet strict requirements:
- continuous operation
- Resistance to moisture and corrosion
- limitation of blockages
- Simple and secure maintenance.
Bolts are a proven solution to meet these challenges.
Our solutions for wastewater
Transport visa for refusal to de-grate
The transport screws ensure the transport of rejects from the bar screen first step of the process to the next step.
They are designed to:
- transporting wet and heavy waste
- adapt to the constraints of the installation (horizontal or inclined)
- to ensure reliable operation with a minimum of intervention.
Compaction visit for refusal to unblock
The compaction screws combine transport, drainage and the reduction of the volume of the debris that is removed.
They allow:
- to significantly reduce the volume of waste
- to limit the runoff of residual water
- to optimize the management of the tanks and the drains
- This type of screw is particularly suitable for stations seeking a compact, economical, and automated solution.
Criteria for choosing a screw to avoid grating
Nature and behavior of refusals
The dimensioning of a screw depends heavily on:
- the quantity of waste to be transported and/or compacted
- of their water content
- of their fibrous or heterogeneous nature.
These parameters influence the diameter of the screw, the motor power, and the type of compaction.
Flow rate and configuration of the installation
The flow rate of refuse, the angle of inclination and the placement within the existing structure are determining factors for choosing the most suitable solution.
Design and manufacture FB PROCÉDÉS
Solutions adapted to wastewater treatment plants
The FB PROCÉDÉS screws are designed to be integrated into wastewater pretreatment systems, whether new or renovated.
Each equipment is designed according to:
- from the existing process,
- exploitation constraints,
- performance goals.
Robustness, reliability and integration
Our solutions prioritize:
- a robust mechanical design,
- materials suitable for humid and aggressive environments,
- a smooth integration with upstream bar screens and downstream equipment.
Operating and maintenance constraints
Accessibility, ease of cleaning, operator safety, and service continuity are integrated from the design phase.