Screenings washing unit with integrated wash press
The RWK effectively removes organic residues from screenings while ensuring reliable dewatering. This reduces volume and weight, simplifies disposal, and enhances the operational reliability of downstream wastewater treatment units.
At a Glance
At a Glance
High-Efficiency Washing System
- Highly efficient washing system for the continuous removal of organic material from screenings
- Subsequent compaction and dewatering of the inorganic fraction
- Optional water supply if insufficient water is fed in with the screenings
Available Models
- RWK 20
- RWK 30
- RWK 40
- RWK 50
Accessories
Attached to the Screenings Wash Press
- Wash Water Supply: Including brass solenoid valve R 3/4" – 220 V/50 Hz and dirt strainer (mesh size 0.8 mm)
- Flushing System: Wash and press water collection tray with solenoid valve R 3/4" – 220 V/50 Hz and dirt strainer (mesh size 0.8 mm)
- Manual Shut-off Valve: Brass R 3/4"
- Rinse Water Connection: For hose nozzle R 3/4"
- Support Frame: Adjustable for leveling construction tolerances (adapted to the system)
- Press Pipe: With flange connection via a pre-pressing cone, bolted to the base unit for discharge into a container or subsequent conveying systems
- Infeed Hopper: Adapted to the upstream screen or conveyor to ensure a hygienic transition
Materials
Materials
| Conveyor trough, support frame, cover: | see quotation |
| Mixing and conveying shafts: | Hardox + St 52-3 |
| Trough lining (conveying/pressing section): | Hardox (wear rails) |
| Trough lining (washing/infeed section): | PE 1000 (wear plates) |
| Shear pins: | Tempered steel |
| Drive shaft: | Steel |
| Water pipes: | Stainless steel 1.4571 |
| Connecting elements and moving parts (screws, nuts, pins, etc.): |
Stainless steel A4 |
Technical Data
Technical Data
Description
Screenings Washing Plant with Integrated Screenings Press
Purpose of the System
Screenings washing plant for the continuous washing of organic material from screenings, followed by compaction and dewatering of the inorganic fraction, with discharge to further conveying systems or collection containers.
Washing Process
The washing takes place in a trough-shaped wash tank into which the pre-dewatered screenings are fed. In the inlet area, two mixing shafts with paddles rotate to break up and thoroughly mix the screenings. Each shaft is driven by a separate motor.
A water supply system is installed in the hopper. If the screenings are not sufficiently supplied with water, it adds wash water to ensure that loosened organic substances go into solution.
The mixing shafts transition continuously into conveying shafts beyond the inlet area, transporting the washed screenings out of the washing zone.
The wash water containing the dissolved organic matter flows through drainage screens located in the conveying section into a collection trough and is returned to the inflow.
Pressing Zone and Dewatering
The undissolved inorganic material is conveyed by the screw shafts into the downstream pressing zone and friction pipe. Here, as in a conventional screw press, compaction and dewatering of the remaining screenings occur due to the back pressure within the press pipe.
The resulting press water, which still contains organic substances, flows through the drainage screens into the collection trough and is also returned to the inflow.
Gallery
Gallery
Downloads
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Downloads