Water and Wastewater Terms Beginning A

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activated sludge process

A biological wastewater treatment process that speeds up the decomposition of wastes in the wastewater being treated. Activated sludge is mixed with wastewater, and the mixture (mixed liquor) is aerated and agitated. After some time in the aeration tank, the activated sludge is allowed to settle out by sedimentation and is seperated from treated wastewater. Also called conventional activated sludge.