Screw Press Troubleshooting
Diagnose and correct common dewatering problems
Most screw press performance issues trace back to a handful of causes — polymer conditioning, feed consistency, screw speed, or back-pressure. Each guide describes a symptom, its likely causes, and the corrective actions to restore stable cake dryness and clean filtrate.
Common Problems
Wet Sludge Cake
Cake is too wet and low in dry solids
Low Cake Solids
Dry-solids percentage below expectation
High Filtrate Solids (TSS)
Cloudy filtrate carrying too many suspended solids
Poor Solids Capture
Too little of the incoming solids ends up in the cake
Polymer Problems
Polymer make-up, ageing or dosing faults
Poor Flocculation
Flocs are weak, small or fail to form
Screen Clogging / Blinding
Drainage gaps blocked, filtrate falling
Ring Pack Fouling
Solids building up between the moving and fixed rings
High Wash-Water Consumption
Using more wash water than expected
High Energy Consumption
Drive drawing more power than normal
Screw Press Overload / High Torque
Drive torque high or overload trips
Sludge Bridging
Sludge arching and starving the press
Unstable Sludge Feed
Feed flow or concentration keeps changing
Poor Overall Dewatering Performance
A structured way to diagnose disappointing results
Cake Not Discharging
Cake sticking or failing to leave the press
Two-Screw Unit with Control Panel
Ready-to-connect dewatering unit with touch panel control, flocculation tank and cake discharge chute.
Explore the RF seriesReady 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.