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PISTA - Model 360° or 270° -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.
- Capacities: up to 100 MGD (378,500 cmd)
- Arrangement: 360° or 270° 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)