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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.

HUBER Rotary Screw Thickener S-DRUM
HUBER Rotary Screw Thickener S-DRUM for raw sewage sludge thickening
Two HUBER Rotary Screw Thickener S-DRUM units for 40 m³/h each
Two HUBER Rotary Screw Thickener S-DRUM units for 40 m³/h each
Eight screw thickeners handling 600 m³/h
Eight screw thickeners handling 600 m³/h
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Design sketch: Sectional view of a S-DRUM size 4L
Design sketch: Sectional view of a S-DRUM size 4L

Design and Function

Design sketch: Sectional view of a S-DRUM size 4L
Design sketch: Sectional view of a S-DRUM size 4L

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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Case Studies

HUBER Solutions in Operation

img-casestudy-20-08-sludge-thickening-uu-uk-01
2020-08-06 United Utilities, Warrington, England

A HUBER Technology Sludge Thickening case study at United Utilities

In 2017, United Utilities started work on a four-year improvement project at Blackburn and Darwen WwTW.

The Main...

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img-casestudy-13-11-spress-bulgaria-01
2013-11-07 Varna, Bulgaria

HUBER sludge treatment plant on the Black Sea Coast

HUBER won the public tender for the mechanical sludge thickening system in the Bulgarian city of Varna for 450,000 PE in...

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