Kinetic

Centrifugal

Raw water and wastewater secondary sludge return and wasting settled primary and thickened sludge, effluent

Peripheral

Scum
grit
sludge
raw water and wastewater

Rotary

Lubricating oils
gas engines
chemical solutions
small flows of water and wastewater

Positive Displacement

Screw

Grit
settled primary and secondary sludges
thickened sludge
raw wastewater

Diaphragm

Chemical solution

Plunger

Scum and primary, secondary, and settled sludges; chemical solutions

Airlift

Secondary sludge circulation and wasting
grit

Pneumatic ejector

Raw wastewater at small installation (100 to 600 L/min)