PISTA® Grit Removal System

Learn more about the leading grit removal system in the water industry.


The Leading Grit Removal System
Hydraulic vortex design with internal baffle design and flat-floor is what makes the PISTA® 360™ completely unique from all other systems, which rely on less efficient settling properties and larger tank sizes. The key to removing grit in wastewater streams — efficiently and cost-effectively — is properly managing flow velocity entering and inside the chamber.

With the lowest life cycle costs in the industry, the PISTA® 360™ delivers tremendous value for plant investment. The PISTA® 360™ with V-FORCE Baffle™ rises above all other grit removal systems in these critical areas:

Utilizes Hydraulic Removal vs. Settling Methods
Inside the grit chamber, the PISTA® design causes grit to be hydraulically swept across the flat (not sloped) chamber floor toward the center opening. The chamber geometry with internal baffling — not the center propeller — is what induces the vortex action and maintains ideal velocity. The low-energy propeller’s primary function is to assist in drawing the grit into the grit hopper and lift and separate the lighter organics.

Superior Grit Removal Efficiency
95% of grit particles down to 105 microns (140 mesh) is the industry’s best against the true grit that causes headaches for any plant operation.

Lower Total Installed & Energy / Utility Costs
Typically smaller tankage – resulting in significantly less concrete for installation – and considerably less power and utility water requirements.

Unequaled Innovation, Experience and R&D
No company has dedicated more to successful grit removal than S&L. Decades of R&D, continual new product innovations backed by 2,600+ installations, the most of any grit removal system supplier.


PISTA® 360™ with V-FORCE BAFFLE™ Benefits

Design & Installation Advantages with V-FORCE Baffle™ Technology

The V-FORCE Baffle™ eliminates the downstream channel required in conventional vortex systems – This contributes to lowering the overall footprint and installation costs.

The V-FORCE Baffle™ eliminates need for downstream flow control device – Reduces overall design and installation costs.

As stated above, the inclusion of the V-FORCE Baffle™ can reduce the number of total units required based on design and peak flow data – Reduces overall design and installation costs

Depending on project flows and regional sediment data, the inclusion of the V-FORCE Baffle™ can significantly increase the amount of incoming grit (between 100 – 300 microns / 50 – 140 mesh) removed per million gallons per day of flow, ranging estimated amount of 20 lbs. to 200 lbs. per MGD (2.4 – 24 kg per 1,000 m3/d) of flow.

At right, grit removal differential examples with S&L baffle technology. Consult with S&L for estimates based on your project’s design flow and region.

Range of expected additional 150 micron grit removed with S&L Baffle technology compared to conventional settling and vortex systems, by continental region, per 1 MGD.

For example, in the South Central U.S., on average, end-users can expect to remove an additional 4.5 tons per year of 150 micron grit and larger with S&L PISTA® Baffle Technology.