Sentences with activated sludge
ac·ti·vate sludge
A a - The activated sludge is then separated from the treated wastewater and disposed of or returned to the process as needed.Activated sludge has been aerated and subjected to bacterial action, and is used to remove organic matter from sewage.Activated sludge is a thick soft substance used for removing pollutants from waste water by a biological reaction that involves oxygen.