the solids which settle after primary treatment of sewage are called (a) primary sludge (b) activated sludge c) flocs(d) total solids
Dear student.
The correct answer is a. Activated sludge.
Solids that settle down form the sludge (after filtration and sedimentation) is known as primary sludge while the supernatant forms the effluent.
Regards.
The correct answer is a. Activated sludge.
Solids that settle down form the sludge (after filtration and sedimentation) is known as primary sludge while the supernatant forms the effluent.
Regards.