The activated sludge process produces about 70 100 kg / ML of waste activated sludge ( that is kg of dry solids produced per ML of wastewater treated; one mega litre ( ML ) is 10 3 m 3 ).
22.
:"'Low energy requirements : "'the aerobic granular sludge process has a higher aeration efficiency due to operation at increased height, while there are neither return sludge or nitrate recycle streams nor mixing and propulsion requirements
