Water and Wastewater Terms Beginning A

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

activated sludge

Sludge produced by the growth of organisms in aeration tanks in the presence of dissolved oxygen (DO). The most important component of the sludge is the living organisms that feed on the incoming wastewater, but the sludge also contains inorganic matter and dead microorganisms.