Presentation
The BioPress BIOTRADE screw press is a piece of equipment designed to dewater municipal and industrial sludge through pressing.
It consists of a conical Archimedes’ screw and a drum formed by alternating fixed and moving discs. This design allows for the gradual compression of flocculated sludge to separate the water from the solid matter.
Unlike perforated drums, the disc-based drum is less prone to clogging. The movement of the discs as the screw rotates limits material buildup, while a nozzle-based washing system ensures thorough cleaning of the entire assembly.
Functioning
The flocculated sludge is fed into the press chamber. A conical Archimedes screw gradually conveys the material through the disc drum.
As the material advances, the available space decreases, increasing the pressure exerted on the sludge. A back-pressure cone performs the final pressing before the dewatered sludge is discharged.
The extracted water is drained off as filtrate, while the dewatered sludge is directed toward the discharge hopper.
Model
BIOTRADE markets various models of BioPress screw presses, sized according to the dry matter load to be processed and installation constraints.
The equipment can be manufactured from 304L or 316L stainless steel, featuring one or two pressing lines depending on the environment and site requirements.
Technical Specifications
- Sludge dewatering via mechanical pressing.
- Conical Archimedes’ screw.
- Drum with fixed and moving discs to minimize clogging risks.
- Integrated nozzle-based washing system.
- Stainless steel structure.
- Hinged, liftable cover for easy access and maintenance.
- One or more low-speed gear motors, depending on the model.
- Discharge hopper for dewatered sludge.
- Connections for flocculated sludge inlet and filtrate outlet.
Spectrum
The BioPress range enables the dewatering of sewage sludge with capacities ranging from 10 to 150 kg DS/h, depending on the model and configuration.
| Critère | Détail |
|---|---|
| Equipment type | Screw press for sludge dewatering |
| Applications | Municipal and industrial sludge |
| Principle | Pressing using a conical Archimedes screw and a disc drum |
| Stated capacity | 5 to 250 kg MS/h |
| Materials | 304L or 316L stainless steel, depending on configuration |
| Cleaning | Nozzle washing system |
| Maintenance | Hinged lift-up hood |