Wastewater treatment plants use sludge pumps to move wastewater and sludge. However, choosing the wrong pump can cause a lot of problems. Read on to know the best pumps to use for sludge applications.
Centrifugal
pumps
These pumps are good for transferring sludge with very
little immersed solids and low viscosity. They generate lesser pulsation than
other positive displacement pumps. Unfortunately, these pumps come with a high
shear rate.
Air-operated
diaphragm pumps
These pumps are one of the most popular pump options
for pumping sludge. The main reason behind this is that the operation of these
pumps is simple. An air-operated diaphragm pump has a single diaphragm that is
operated with compressed air. Controlling the speed of the pump is very simple
and the displacement of the fluid is easily predictable.
Progressive
cavity pumps
If you are looking for a sludge pump on rent, this
is another good option. These pumps handle sludge efficiently. Progressive
cavity pumps generate pulsation rates. They also create zero shears on the
sludge. Whilst progressive cavity pumps are highly efficient, maintenance and
repair can be difficult.
Rotary
lobe pumps
If you want to pump fluids with high viscosity then
you should consider rotary lobe pumps. Rotary lobe pumps have low shear and low
pulsation. They come with small operational footprints and accessing their
interior parts is very easy. Whilst rotary lobe pumps feel expensive initially,
they are worth it.
This is mainly because the amount of money and time
you spend on maintenance, replacement parts and repair for rotary lobe pumps is
lesser than progressive cavity pumps.
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