Stationary sand separator ESN

metal

CATEGORY / TYPOLOGY
Category: Potable water
Typology: Grit removal unit (screw grit classifier)

WHEN TO USE IT
The screw grit classifier is installed on medium and large wastewater and potable water treatment plants, typically downstream of primary grit removal units. It performs grit washing and water reduction to prepare grit for disposal or recovery.

HOW IT IS MADE

• Purpose-designed metal tank
• Shaftless screw conveyor to minimise blockages and wear
• Canal lined with wear-resistant, replaceable material suitable for grit collection
• Gear-motor drive unit mounted directly on the screw axis
• Integrated grit washing system
• Grit discharge hopper for controlled evacuation

HOW IT WORKS
Settled grit on the tank bottom is collected and lifted by the shaftless screw conveyor to the washing zone, then discharged into the grit hopper. Screw diameter and classifier model are selected according to inlet flow rate and expected grit load. The drive is a gear-motor directly coupled to the screw axis. The unit is supplied with supports and anchor bolts for stable mounting. Electronic load limiting devices provide overload protection. The design ensures effective grit-water separation with straightforward operation.

STRENGTHS

• Efficient grit-water separation for improved downstream processing
• Closed, compact unit reducing odour and spillage
• Low energy consumption due to optimized screw and drive selection

CHARACTERISTICS / TECHNICAL SPECIFICATIONS

• Category: Potable water
• Typology: Grit removal unit (screw grit classifier)
• Construction: Purpose-designed metal tank
• Conveying: Shaftless screw conveyor
• Canal lining: Wear-resistant replaceable material
• Drive: Gear-motor mounted on screw axis
• Grit handling: Washing system and grit discharge hopper
• Protection: Electronic load limiting devices
• Mounting: Supports and anchor bolts for stability
• Model selection: Screw diameter and model sized to inlet flow rate and grit load