The performance of the Lakeside Spiraflo Clarifier has been extensively proven since 1934. Lakeside has installed more than 2,000 clarifiers in sizes ranging from 8 feet to 130 feet in diameter for primary, secondary and tertiary clarification.

Wastewater enters the Spiraflo Clarifier at the periphery of the tank and is directed along the narrow raceway formed by the skirt and the outer wall. This flow pattern dissipates the wastewater’s hydraulic energy as it flows around the raceway and eventually spirals down under the skirt. Wastewater enters the main settling area from the full circumference of the skirt and slowly rises to pass over the centrally located effluent weirs. The inflow is prevented from flowing directly to the effluent weir by the specially designed race skirt, which extends down to approximately two feet above the tank floor. The spiraling flow pattern makes use of total tank volume for more effective solids settling.

The Spiraflo’s hydraulic flow pattern minimizes problems usually associated with centerfeed hydraulics, such as: waterwall effect, sludge wall creep and short-circuiting.

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