SP
High-capacity four-screw screw press for sludge dewatering in an industrial hall
Applications

DAF Sludge Dewatering

Effective dewatering of dissolved air flotation sludge

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DAF Sludge Treatment

Dissolved air flotation (DAF) produces a float sludge that is typically concentrated at 3–8% dry solids and rich in fats, oils, and grease. This sludge type is particularly challenging for belt filter presses and plate-and-frame filter presses, as the greasy material quickly blinds filter cloth. The self-cleaning ring disc design of multi-disc screw presses makes them the preferred technology for DAF sludge dewatering. The moving rings continuously clear the filtration gaps, preventing grease-related blockages.

RF Series for DAF Sludge

  • Feed concentration typically 3–8% DS — directly processable without pre-thickening
  • Self-cleaning design prevents grease-related clogging
  • RF-131 to RF-404: throughput from 20 to 1,280 kg DS/h at 5% feed
  • 316/316L stainless steel for food-grade and corrosive environments
Two-screw screw press with dewatered sludge cake discharge trough
RF Series Screw Press

Sludge Cake Discharge

The dewatered cake drops into a discharge trough — ready for a conveyor, container or skip.

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Explore the DAF Sludge Cluster

Dewatering DAF Sludge

Dewatering DAF sludge with a screw press: turn light, floating DAF float into a transportable cake with the right conditioning and continuous operation.

Screw Press for DAF Sludge

Screw press for DAF sludge: an enclosed, self-cleaning, low-speed press that outperforms belt presses and centrifuges on greasy, aerated DAF float.

Food Industry DAF Sludge

Food industry DAF sludge dewatering: handle high-FOG float from dairies, meat, beverage and food plants in an enclosed, hygienic screw press.

Industrial DAF Sludge

Industrial DAF sludge dewatering: screw press handling of chemical, oily and mixed DAF float from a wide range of industrial effluent plants.

Polymer Conditioning for DAF Sludge

Polymer conditioning for DAF sludge: how flocculant type, charge, dose and mixing energy determine cake dryness and solids capture on a screw press.

DAF Sludge Thickening

DAF sludge thickening with a screw thickener: raise thin DAF float from under 1% to 5–8% DS to cut volume, boost dewatering and reduce polymer use.

Engineering Assessment

Ready to Find the Right Screw Press?

Our engineering team provides application-specific screw press sizing and selection — based on your sludge type, flow rate, and dewatering targets.

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