Everything You Need To Know About Pumps That Pump Sewage


Most common types of sewage pumpin Australia include reciprocating pumps, centrifugal pumps and air pressure or pneumatic ejectors pumps. We are going to look at these types and give you more information about them.

Centrifugal pumps

These types of pumps are mostly used for lifting sewage. Centrifugal pumps work on the centrifugal force principle. The sewage that enters inside the centrifugal pump is revolved at a very high speed utilizing the impeller and is then thrown to the periphery by a centrifugal force. The velocity head is then converted to pressure head. The head forces the sewage through the delivery centrifugal pipe. There are different types of centrifugal pumps including turbine, volute, disintegrating, and horizontal axis flow pump.

Advantages of centrifugal pumps

Centrifugal pumps require minimum installation space. They can be easily installed and once installed; they easily transport suspended matter in the sewage without getting clogged. Centrifugal pumps are cheap and they can’t be damaged due to high pressure and this makes them ideal for applications that involve high pressure.

Disadvantages of centrifugal pumps

The pumps have a flow rate that cannot be regulated. Centrifugal pumps cannot be operated without priming and they have a restricted suction.

Reciprocating pumps

Nowadays, these pumps are not commonly used but they can be used to pump a large quantity of sewage. There are two types of reciprocating pumps used to pump sewage: propeller and ram type. The ram-type consists of a closed cylinder where a piston moves to and fro by the aid of a connecting rod. During the suction stroke, the sewage being pumped enters the cylinder and the sewage is forced through via the delivery pipe.

The propeller type of reciprocating sewage pump in Australia has a propeller that moves vertically inside the casing of the pump. This causes the sewage to lift. The reciprocating pumps have several benefits.

Advantages of reciprocating pumps

These pumps give constant discharge under variable heads. They are flexible and durable and are suitable for pumping large quantities of sewage.


Centrifugal pumps have a high initial cost and they require more installation space. It is difficult to maintain them and they have a more wear and tear of the valves. Centrifugal pumps are not suitable for pumping sewage with a large quantity of silt and sand.

Air pressure or pneumatic ejectors pumps

These pumps are suitable for pumping small quantities of wastewater. They consist of a tight tank that water flows into by gravity. Whenever sufficient wastewater has accumulated, it raises a float.

Advantages of pneumatic ejectors

Pneumatic ejectors require the least supervision. They are not likely to be clogged anywhere and they are economical where small quantities of wastewater are required to be pumped. However, these pumps have very low efficiency.

Choose the right pump

When choosing a sewage pump in Australia, you have to consider several things such as the quantity of the sewage you want to pump, the nature of the sewage and the pumping pressure required. It is best to consult a professional when choosing the right pump.

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