Operation & Maintenance
Sludge Feed Control
Steady feed is the foundation of steady dewatering
A screw press performs best on a constant, well-mixed feed at a stable solids concentration. Surging or fluctuating feed upsets flocculation, destabilises cake formation and forces constant re-tuning of polymer and speed.
Elements of good feed control
- A progressive-cavity or other low-pulsation feed pump for smooth flow.
- A well-mixed feed tank so solids concentration stays constant.
- Flow measurement so polymer can be paced to actual sludge flow.
- Level control linking feed, screw speed and polymer together.
Pacing polymer to feed
The most stable systems measure sludge flow and solids and pace polymer proportionally, so dose per tonne of dry solids stays constant even as flow varies. Where sludge comes from a fluctuating source, a buffer or blend tank smooths out swings before the press, protecting cake quality and avoiding continual manual correction.
RF Series Screw Press
Self-Cleaning Ring Disc Filter Elements
Fixed and moving stainless steel rings form the filtration gaps and keep them clear continuously — no filter cloth, no clogging.
Explore the RF seriesEngineering Assessment
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Our engineering team provides application-specific screw press sizing and selection — based on your sludge type, flow rate, and dewatering targets.