The sludge treatment process to increase the solid content of sludge is ___________
(a) Dewatering
(b) Thickening
(c) Conditioning
(d) Drying
I have been asked this question in examination.
I would like to ask this question from Mechanical Aeration System, Treatment of Sludge in chapter Sewage Filtration and Activated Sludge Process of Environmental Engineering