Screw Pumps

Varisco (Italy / Atlas Copco Group) screw pumps are the preferred choice for transferring sludge, thick wastewater, and high-viscosity liquids in treatment plants. The Archimedes screw principle delivers consistent flow independent of pressure, with no mechanical shearing action — ideal for raw sludge, activated sludge, and dewatered sludge.

Key specifications:

• Archimedes screw principle: Gentle, non-destructive sludge transport
• Clog-free operation: Handles sludge with dry solids (DS) content to 8%
• High efficiency: Best-in-class flow-to-power ratio for sludge applications
• Flow: 10–600 m³/h; Head: to 10 m; Power: 1.5–45 kW