Screws for Bar Screen screenings
In wastewater treatment plants, the management of bar screen screenings is an essential step in the preliminary treatment of wastewater.
Conveying and compaction screws ensure the continuous removal of extracted waste, while limiting nuisances, the volumes to be disposed of, and operational interventions.
FB PROCÉDÉS designs and manufactures screws specifically adapted to the conveying and compaction of bar screen screenings, taking into account the hydraulic, mechanical, and environmental constraints specific to wastewater treatment facilities.
The role of screws in the treatment of bar screen screenings
Transport des refus en sortie de dégrilleur
After screening, the screenings must be reliably and continuously removed from the bar screen discharge chute.
The screw provides controlled mechanical conveying, even with heterogeneous waste composed of fibrous or organic materials.
Dewatering, conveying, and volume reduction
Depending on the configuration, the screw can provide:
- conveying of screenings to a storage area or a compactor,
- initial dewatering of the waste,
- or volume reduction by compaction, helping to reduce treatment and disposal costs.
Operational challenges in wastewater treatment plants
Equipment dedicated to bar screen screenings must meet stringent requirements:
- continuous operation,
- resistance to moisture and corrosion,
- limitation of clogging,
- simple and safe maintenance.
Screws are a proven solution to meet these challenges.
Our screw solutions for wastewater
Screw conveyor for bar screen screenings
Conveying screws ensure the transport of screenings from the bar screen to the next stage of the process.
They are designed to:
- convey wet and heavily loaded waste,
- adapt to installation constraints (horizontal or inclined),
- guarantee reliable operation with minimal interventions.
Screw Compactor for bar screen screenings
Screw Compactors combine conveying, dewatering, and volume reduction of bar screen screenings.
They make it possible to:
- significantly reduce waste volume,
- limit residual water runoff,
- optimize the management of containers and waste removal.
This type of screw is particularly suited to treatment plants seeking a compact, cost-effective, and automated solution.
Selection criteria for a screw for bar screen screenings
Nature and behavior of screenings
The sizing of a screw depends largely on:
- the quantity of waste to be conveyed and/or compacted,
- its water content,
- its fibrous or heterogeneous nature.
These parameters influence the screw diameter, motor power, and the type of compaction.
Flow rate and installation configuration
The screenings flow rate, the inclination angle, and integration within the existing structure are determining factors in selecting the most suitable solution.
Operational and maintenance constraints
Accessibility, ease of cleaning, operator safety, and service continuity are taken into account from the design phase.
FB PROCÉDÉS design and manufacturing
Solutions tailored to wastewater treatment plants
FB PROCÉDÉS screws are designed to be integrated into wastewater pretreatment lines, both for new installations and refurbishments.
Each piece of equipment is engineered based on:
- the existing process,
- operational constraints,
- performance objectives.
Robustness, reliability, and integration
Our solutions prioritize:
- robust mechanical design,
- materials suited to humid and aggressive environments,
- seamless integration with bar screens and upstream and downstream equipment.
Operational and maintenance constraints
Accessibility, ease of cleaning, operator safety, and service continuity are taken into account from the design phase.