PISTA® 360° Non-Baffled Grit Chambers

High removal efficiencies originate from the PISTA® Grit Chamber’s unparalleled hydraulic design, including its flat chamber floor, patented  and low-energy axial-flow propeller. The combination creates a true vortex that effectively separates grit from organics and the waste stream. Forced vortex action distinguishes the PISTA® Grit Chamber from all other so-called “vortex” grit chambers because it does not rely on less efficient particle settling or gravity.

PISTA® offers flexible application whether from domestic sewage in a municipal headworks or industrial process streams in a commercial production facility. The PISTA® grit chamber can be installed above-grade or below ground with concrete, carbon steel, or stainless steel tankage. Individual units can handle waste streams less than 0.5 MGD (1900 m3/d) all the way to 100 MGD (378,500 m3/d). In large treatment works, multiple units arrange to efficiently remove grit from hundreds of millions of gallons of flow a day.

Capacitiesup to 100 MGD (378,500 cmd)
Arrangement360° without baffle
Removal %95% down to 50 mesh (300 micron)
85% of 50-70 mesh (297 - 210 micron)
65% of 70-100 mesh (210 - 149 micron)
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PISTA® Grit Flow Path
PISTA® Headworks

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