Efficient grit removal and washing with SpiroGrit and SpiroGrit W for cleaner wastewater treatment

The SpiroGrit (grit classifier) and SpiroGrit W (grit washer) deliver powerful performance in removing sand and grit from wastewater—while simultaneously washing away organic matter.

Designed for maximum efficiency, these systems ensure cleaner outputs and smoother downstream operations. Separation is achieved through a combination of flow diversion and reduced flow velocity, which allows solids—such as grit and organic materials—to settle out effectively.

These systems are highly efficient in removing a significant portion of the organic content present in grit. Grit washers, in particular, produce a high-quality grit output with moisture content below 10% and volatile solids under 3%.

Equally noteworthy is their performance in fine particle capture: grit washers can retain particles as small as 0.2mm with an efficiency of approximately 95%.

Grit classifier with conveyor to separate sandy materials from wastewater

Benefits

High grit particles capture rate (95% minimum)
With SpiroGrit W, less than 3% organic contents obtained in grits

Application: Environment

Municipal wastewater, industrial wastewater

Combo unit, a complete pre-treatment line

The grit classifier and washer can be supplied into a Combo unit, a complete pre-treatment line designed to replace screening equipment installed into a concrete channel, a grit removal / clarifier system and a degreasing system, all included now in a compact unit for space savings.

This combo unit is the ideal solution for a compact unit for smaller footprint, no civil engineer is needed and thus, allowing an easy installation, and is fully closed (no odour).