Belt Press

A belt press is a continuous dewatering machine that compresses a conditioned slurry between two moving, permeable belts. After polymer conditioning, the feed enters a gravity or wedge zone for drainage and pre‑consolidation, then passes through a series of press rolls where increasing mechanical pressure expresses liquid through the belts. The outcome is a compact cake with reduced moisture and a clarified filtrate. Performance depends on polymer program and conditioning energy, belt speed and tension, roll diameters and wrap angles, drainage and support layers, and the surface finish of the belts. Optimised presses achieve high throughput and dryness at modest energy; poor alignment or tracking causes edge wear, re‑entrainment and frequent belt changes. Cleaning systems (showers, scrapers) keep permeability stable; materials (PET, PA, PPS, PEEK or stainless mesh) are selected for chemistry and temperature. Typical KPIs are cake solids, filtrate clarity, specific energy and polymer consumption. Well‑engineered belt presses provide reliable, continuous service for municipal sludges and a wide range of industrial slurries where footprint and uptime matter.