Secondary Clarifiers

Secondary clarifiers help to separate the solids from the liquid phase of the mixed liquor, and remove settled solids from the floor. The three secondary clarifiers at the Glens Falls plant are of the circular, center-column, siphon feed type. Each of these clarifiers are 90 feet in diameter with a water depth of 12 feet. The clarifiers have a detention time of 4.5 hours and an overflow rate of 479 gallons per day per square foot.

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