HUBER Screenings Wash Press WAP® SL HP Washout of organics and controlled high-pressure dewatering
Reduced disposal costs with high pressure for maximum washing and dewatering results
- Dewatering performance up to 60 % DR due to hydraulic high-pressure unit
- High washout factor
- Increase of the thermal value of screenings
Especially wear resistant and solid materials in the conical high-pressure unit ensure reliable long-term operation of the plant.
The ROTAMAT® Screenings Wash Press SL HP operates in a batch mode. Screenings either drop into the launder tank directly from a screen or conveyor, or they are flushed into the tank through a launder channel.
After a batch of screenings has been fed, the tank is filled up with wash water and agitated for an adjustable period by means of an impeller.
Design and Function
High washout factor due to intensive washing
The feacal matter is loosened and removed from the screenings by high turbulence and shear. The washing intensity is selectable and can be adjusted to suit the specific screenings quality. After the washing cycle has been finished, an automatic valve opens and the wash water drains through perforations in the trough. It returns, together with the faecal matter, to the wastewater flow.
The washed screenings are further conveyed into the press zone where they are dewatered by means of a sturdy compacting screw. In the following automatically controlled second press zone the screenings are constantly compacted and dewatered under high pressure to a DS content of up to 60 %.
The press water from the screenings compaction is collected under the high-pressure unit and discharged along with the wash water which is rich in carbon. Automatic cleaning with water of the press and wash water collecting tank under the machine and the complete highpressure unit is possible. The washed and compacted screenings are finally transported through the conical discharge pipe into a skip.
The HUBER Launder Channel HLC Feed System for Screenings Wash Presses
The HUBER Launder Channel operates discontinuously in a batch mode or continuously. The screenings to be treated drop into the launder channel from one or several screens. Wastewater or service water is used to flush the screenings into the wash press. The flushing water serves also as wash water for screenings washing. Free transport water is returned to the system through a perforated plate.
HUBER Launder Channel HLC systems can be adjusted to suit customer-specific requirements. To ensure maximum operating reliability the launder channel control system can be designed to use redundant wash press systems and operate the individual units as needed via according valve control.
Benefits of the HUBER Launder Channel Feed System
- Cost-effective, low maintenance solution
- High operational reliability
- Up to 40 m channel length
- Individually adaptable discharge situations due to flexible launder channel arrangement
- Wastewater or service water as flushing water
- Stainless steel design for corrosion resistance
The Benefits of HUBER Screenings Wash Press WAP® SL HP
- High-intensity washing in launder tank
- Dewatering performance of up to 80 % DR
- Volume, weight and disposal cost reduction of up to 85 %
- Hydraulically controlled high-pressure zone
- Return of carbon-rich filtrate to the wastewater
- Screened wastewater or process water can be used as wash water
- Insensitive to coarse material
- Completely made of stainless steel (including the compacting screw)
- Compacting screw with reinforced flights for wear protection
- High economic efficiency due to reduced transport and disposal cost
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