HUBER Rotary Screw Thickener S-DRUM
Thickening of municipal and industrial sludges
– compact, enclosed design
– efficient, reliable and easy to operate
– low operation and maintenance costs
ROTAMAT® Screw Thickener for big wastewater treatment plants
A preceding flocculation reactor with stirrer ensures efficient sludge treatment in the screw thickener. 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.
➤ 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)
Thickening results > 7 % DR are achieved in typical muni -cipal 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.
More than 700 installations worldwide prove the reliability of the ROTAMAT® Screw Thickener RoS 2.