Water and Wastewater Terms Beginning S

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

solids retention time (SRT)

A process control parameter that represents the average time suspended solids reside in the activated sludge system. SRT is based on the mass of solids in the system and the mass rate of solids leaving the system via the effluent and waste activated sludge.