SP
Three-screw stainless steel screw press for sludge dewatering in an industrial hall
Sizing

Screw Press Sizing

Step-by-step guide to screw press equipment selection

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Sizing Methodology

Screw press sizing starts with the dry solids load — the mass of dry solids that must be processed per hour. This is the product of sludge flow rate (m³/h) and feed dry solids concentration (% DS). DS Load (kg DS/h) = Flow (m³/h) × Feed DS (%) × 10 Once the DS load is established, the appropriate RF model can be selected from the performance table. Additional factors including operating hours, redundancy requirements, and sludge characteristics refine the final selection.

Sizing Steps

  1. 1
    Determine sludge flow rate (m³/h or m³/d)
  2. 2
    Measure or estimate feed dry solids concentration (% DS)
  3. 3
    Calculate dry solids load: DS Load = Flow × DS% × 10
  4. 4
    Define operating hours per day and redundancy requirements
  5. 5
    Select RF model from the performance table
  6. 6
    Validate selection with sludge characterization data
  7. 7
    Request engineering assessment for final configuration
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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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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