ALL meanings of activated sludge

ac·ti·vate sludge
A a
  • noun activated sludge a mass of aerated precipitated sewage added to untreated sewage to bring about purification by hastening decomposition by microorganisms 3
  • noun activated sludge Activated sludge is a thick soft substance used for removing pollutants from waste water by a biological reaction that involves oxygen. 3
  • noun activated sludge sludge (def 8). 1
  • noun activated sludge Sewage that has been aerated and agitated in order to promote the growth of beneficial microorganisms that break down organic matter. 0
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