Gravity Settling
Thickening Gravity Belt
Air Floatation
Gravity Settling Breaks up sludge to release excess water.
Gravity Belt Sludge travels on porous fabric.
Air Floatation Air injection.
Aerobic Digestion
Stabilization
Anaerobic Digestion
Aerobic Digestion Difficult to dewater after.
Anaerobic Digestion Convert odorous sludge to nonodorous sludge.
Chemical Conditioning
Conditioning
Heat Treatment
Chemical Conditioning Addition of coagulants or polymers to bind solids.
Heat Treatment Release of water through evaporation.
Belt Filter Press
Dewatering
Drying Sand Beds