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Hydroflux HUBER Q-PRESS - Model RoS3Q -Inclined Sludge Presses
The HUBER Q-PRESS® RoS3Q Inclined Sludge Press is a unique sludge dewatering machine developed by HUBER over 20 years ago and now over 1200 machines have been installed globally in many applications.
The screw press provides a simple, high performance system that offers an attractive life cycle value compared to centrifuges or belt presses.
One of the key features of the screw press is its slow operational speed. The basket and screw rotates at
Several RoS3Q models are available with capacities ranging from 20 to 540Kg DS per hour to suit most industrial applications for dewatering of primary or secondary sludge.
All machines are fully enclosed and manufactured in stainless steel
Sludge is firstly flocculated in-line with a polyelectrolyte and enters the machine.
The machine consists of a main case, internal screw (rotating at <1.5rpm), spray bar and cylindrical wedgewire/mesh drum. As the sludge enters the unit the sludge is conveyed by the screw through the drum length whilst the filtrate is drained through the mesh. The drum consists of variable apertures and profiles, and together with a reducing screw pitch and increased shaft diameter, pressure is gradually applied to the sludge mass.
The ultimate high pressure zone is at the outlet section where an adjustable pneumatic cone is configured to achieve maximum sludge dryness. The cake is discharged through the cone into a bin or conveyor system and the filtrate collects within the main case and is discharged via gravity to the filtrate outlet flange.
The Screw Press offers superior performance in terms of sludge dryness and power consumption over other conventional dewatering systems:
- Reduced sludge disposal costs
- High performance & efficiency
- Very slow speed screw, < 1.5 rpm
- Very low energy requirement
- Low maintenance requirements
- All stainless steel construction and fully enclosed
- Intermittent and low washwater requirements

There are numerous applications for the RoS3Q Screw Presses:
- Meat and Poultry Industry WWTP sludge
- Dairy WWTP sludge
- Fruit and Vegetable WWTP & Processing sludge & wastes
- Potato and Potato Chips WWTP & Processing sludge & wastes
- General Food Industry WWTP & Processing sludge & wastes
- Paper, Cardboard and Printing WWTP & Processing sludge & wastes
- Waste Activated Sludge Dewatering
- Potable Water Treatment Sludge Dewatering
