Clarifier
Settling tanks for continuous removal of solids being deposited by sedimentation / From Wikipedia, the free encyclopedia
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This article is about concrete and metal sedimentation tanks including continuous mechanized removal of solids. For a description of simpler settling ponds without solids removal machinery, see Settling basin.
Clarifiers are settling tanks built with mechanical means for continuous removal of solids being deposited by sedimentation.[1] A clarifier is generally used to remove solid particulates or suspended solids from liquid for clarification and/or thickening. Inside the clarifier, solid contaminants will settle down to the bottom of the tank where it is collected by a scraper mechanism.[2] Concentrated impurities, discharged from the bottom of the tank, are known as sludge, while the particles that float to the surface of the liquid are called scum.[3]