settlement tank

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Syn: settling chamber. A container in which liquids containing suspended solids are maintained at rest for a sufficient period for the suspended solids to settle in a layer of sediment at the bottom, or if lighter, a layer of supernatant (“scum”) on the surface of the liquid. Settlement tanks are an essential feature of sewage treatment plants and are widely used in industrial processes, e.g., to allow settlement of solid particulate matter in furnace emissions.

Subjects: Public Health and Epidemiology.

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