HUBER Rotary Screw Thickener S-DRUM Rotary screw thickener for efficient thickening high amounts of sludge at big wastewater treatment plants
Thickening of municipal and industrial sludges
- Compact, enclosed design
- Efficient, reliable and easy to operate
- Low operation and maintenance costs
More than 700 installations worldwide prove the reliability of theHUBER Rotary Screw Thickener S-DRUM.
Thickening results > 7 % DR are achieved in typical municipal applications with a polymer consumption of 3 - 5 g/kg. Power consumption is only 35 W/m³, spray water demand only approx. 25 l/m³.
Different system sizes are available for throughputs from 20 to 100 m³/h per unit.
Design and Function
A preceding flocculation reactor with stirrer ensures efficient sludge treatment in the HUBER Screw Thickener S-DRUM. The screw thickener consists of a cylindrical wedge section basket which retains the solids contained within the fed sludge.
A screw, slowly rotating with variable speed, conveys the solids gently upward through the inclined basket.
Water drains through the basket. The degree of thickening is adjustable by means of a height adjustable weir plate in the sludge discharge and the variable screw speed.
A rotating spray bar cleans the wedge wire periodically from the outside during screw operation.
The benefits of the HUBER Rotary Screw Thickener S-DRUM
- Sludge volume reduction by up to 80 %
- Sturdy design for high solids loads and coarse material containing sludge
- Maximum system availability due to the virtually wear-resistant and clog-free stainless steel wedge section basket
- High operational reliability due to the slow screw speed
- Low power and spray water consumption
- No need for lubrication
- Completely encapsulated, odour-free plant
- No vibration
- Low noise < 68 dB(A)
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