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How Does a Sewage Pump Work

How Does a Sewage Pump Work?

A sewage pump moves waste solids and liquids from one place to another. Residential sewage is typically made of soft solids with a diameter of up to 2 inches. The sewage goes from the sewage basin to a septic tank or sewer.

Since the sewage pump is often located at the lowest point of your sewage basin, it is submerged and is also known as the submersible sewage pump.

The pump can be manual, automatic, or dual-mode.

How does the pump work?

Sewage pumps have centrifugal pumps that allow the passage of solids through them without clogging up the pump.

The motor of the pump rotates the impeller which pushes the water due to the pressure created which then flows to the discharge pipe.

Sewage pumps are of three types:

  1. Solid handling pumps- Also known as sewage ejector pumps, they are used to move raw sewage. Raw sewage has a lot of solids, which cannot be handled by all pumps. These pumps are ideal for handling solids and should be used for raw sewage.
  2. Effluent pumps- These are small pumps that are placed using an on-site system. They are used for pumping the effluent that comes from septic tanks. Since the solids are left in the septic tank, the effluent is generally a clear liquid. Effluent pumps can pump out easily and efficiently since they don’t have to handle solids.
  3. Grinder pumps- This pump is similar to the solids handling pump. The difference is, the motor in this pump has rotating blades. These can be thought of as garbage grinders. They take the solid waste and cut and grind them into smaller chunks before pumping them out.


Sewage pumps are helpful to remove water build-up from basements or spaces that are prone to flooding.

Here are their benefits:

  1. They help prevent damage from flooding- In case heavy rains cause a flood in your basement, water can damage the floor and other furniture inside. With a sewage pump, this can be managed.
  2. Prevent mildew and mold development- Mold can develop due to continuous dampness in an area. This can cause damage to property and pose serious health problems too.
  3. Fire prevention- In case water floods the area where you keep your appliances like a washing machine or heating systems, there is a risk of short-circuiting. This can also cause a fire risk. A pump keeps the area dry and free from this danger.


Different kinds of facilities have varying needs and thus require pumps specific to those needs. Get in touch with us at Udyog Engineering, and we will guide you to the best suited pump for your business.


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