The Veolia Water Solutions & Technologies' Dri-Belt consolidates sludges into a considerably reduced volume, to minimise sludge quantities to give minimal handling and transportation.

The Dri-Belt employs two, finely-woven porous belts, through which liquid drains from the flocculated feed sludge. This thickened sludge then passes between the two belts and is compressed between rollers of decreasing diameter to give greater dewatering pressure and a dry handleable cake.

As standard, the system is configured with two belts, however for more dilute sludges, Veolia Water Solutions & Technologies offer a pre-thickening drum which increases the volumetric capability of the Dri-Belt Press. The drum increases efficiency, minimises polymer consumption and provides more operational stability with variable feed sludges, and can also be used in its own right to produce a thickened sludge.

Additionally, the unit is compact and is contained for odour management.

• Capacity from 0.5 m3/hr to 40 m3/hr
• Automatic belt tensioning
• Automatic tracking
• Automatic feeder unit: distributes sludge evenly across the belt, ensuring efficient filtration and long belt life
• Pre-thickening drum offered for more dilute sludges

• Combination System offering Thickening and Dewatering in one unit
• Fully automatic, continuous operation
• Economic operation with low polymer and sludge consumption
• Minimal civil engineering requirements due to low weight
• Fits into a standard single storey building
• Low power consumption and low chemical dosage requirements
• Reduced transport costs
• Odour containment

• The principal being to consolidate sludges into a considerably reduced volume
• The overall effect is to minimise sludge quantities to give minimal handling and transportation
• The Dri-Belt employs two, finely woven porous belts, through which liquid drains from the flocculated feed sludge. This thickened sludge then passes between the two belts and is compressed between rollers of decreasing diameter to give greater dewatering pressure and a dry handleable cake
• The unit is compact and is contained for odour management
• The Dri-Belt, is as standard, configured with two belts. For more dilute sludges, we offer a pre-thickening drum which increases the volumetric capability of the Dri-Belt Press. This can have the effect of increasing efficiency, minimising polymer consumption and provides more operational stability with variable feed sludges
• The pre-thickening drum can also be used in its own right to produce a thickened sludge

VWS can provide various scope options from machine only through to a complete turnkey package.

Options

• Permanent / Skid / Containerised systems
• Filtrate recovery
• Polymer Dosing Control System
• Stainless steel frame

Services

• Lab / On-site pilot trials
• Maintenance and Process Optimisation Contracts
• Hire / Temporary mobile systems
• Finance facilities

The Dri-Belt Sludge dewatering system utilises a simple and robust design for the Belt steering and tracking. This approach simplifies both the operation and maintenance associated with this unit.

• Mixed Municipal Sludges
• Activated Sludges
• Primary Sludges
• Industrial Sludges
• Dairy
• Paper
• Food and Beverage
• Fish Process
• Mineral
• Chemical

The table shows generic performance levels for the Dri-Belt System given on a per metre belt width basis.