Grit Washer

The Raptor^® Grit Washer is the best solution for processing captured grit to the high quality required. Combining a circular and conical design with natural vortex and gravity forces, the Grit Washer provides the highest washing efficiency over a wide range of flowrates.

Influent flow enters the all stainless steel unit tangentially, creating centrifugal forces that allow water and lightweight organics to discharge over an upper weir plate. Grit and heavier materials settle to the lower conical-shaped grit zone where they are gently agitated by mixer arms and washed. The unique two-stage organic separation system includes an organic capture cone and organic blowdown valve. Organics released during agitation and washing are captured in the cone and removed periodically from the Grit Washer through the blowdown valve. The inclined grit screw provides optimal dewatering.

Typical discharge from the Grit Washer is 90 percent dry weight or greater, with less than 5 percent organic material.

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