Introduction
The document discusses the HUBER Coanda Grit Classifier RoSF3, a solution for grit separation and dewatering in wastewater treatment. It highlights the use of the Coanda effect to achieve high grit removal efficiency and reduced organic content in the grit, along with maximum corrosion resistance and wear protection.

The Situation
Traditional grit classifiers often face challenges such as grit carryover due to insufficient retention time or high organic content due to oversizing. These issues lead to operational inefficiencies, including deposits in digesters, high wear rates of pumps, and increased disposal costs.

The Solution
The HUBER Coanda Grit Classifier RoSF3, developed in collaboration with the University of Munich, addresses these challenges by utilizing the Coanda effect. This allows for precise flow definition and mathematical simulation, achieving up to 95% grit separation efficiency for grain sizes of 0.2 mm. The design considers the density difference between grit and organic components, reducing organic contamination and enabling static dewatering.

Design and Function
The system operates by introducing the grit/water mixture into a vortex chamber, inducing a rotary motion. The Coanda Tulip, a key component, diverts the flow to assist in separation. The classifier screw then transports the clean grit up an inclined plane for dewatering before discharge. The system achieves over 90% mineral residue under optimal conditions.

Benefits

• High grit separation efficiency of 95% for grain sizes 0.20 - 0.25 mm.
• Minimized wear due to screw support on both ends.
• High corrosion resistance and encapsulated, odour-free design.
• Optional frost-proof design.

Contact Information
HUBER SE, Industriepark Erasbach A1, D-92334 Berching, Phone: +49 -84 62 -201 -0, Fax: +49 -84 62 -201 -810, Email: [email protected], Website: www.huber.de

Note
Subject to technical modification.