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Processes

Sludge Thickener

  The main purpose of the sludge thickener is to further concentrate sludge.  Sludge that is collected in the primary and secondary clarifiers is pumped up the sludge-thickening tank, where it is mixed together in a mixing box.  The mixed sludge is then distributed evenly throughout the tank and stirred by rotating vertical pickets, which allow water to be channeled away from the sludge and aid in sludge settling.  The sludge that settles to the bottom is scraped by the collection mechanism to a sludge hopper located at the center of the tank, where it is pumped by the thickened sludge pumps to the primary digester for further treatment.

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Copyright 2002 Western Westmoreland Municipal Authority
Last modified: May 3, 2018