What is the most common type of pump used in a lift station?

In wastewater lift stations, the most common type of pump used is the centrifugal pump, particularly in its submersible configuration. Centrifugal pumps are favored for their efficiency in moving large volumes of wastewater over varying distances and heights. They work by converting rotational energy from the motor into kinetic energy in the fluid, which helps to increase the flow rate effectively.

Submersible centrifugal pumps are designed to operate while submerged in the wastewater, making them particularly well-suited for lift stations where space may be limited, and they do not require additional equipment such as a separate pump housing above ground. This type of pump can handle solids and debris typically found in wastewater, which is important for maintaining proper flow in lift stations where sewage and other materials are pumped from lower to higher elevations.

The other types of pumps listed, while useful in specific applications, do not match the performance and versatility of centrifugal pumps in lift stations. Positive displacement pumps, for example, are good for applications requiring precise flow rates but are generally not as efficient in handling large volumes of wastewater with varying flow conditions. Vertical turbine pumps are typically used in applications like deep well installations rather than lift stations, and diaphragm pumps are more suitable for low-flow high-pressure applications, which are less common in wastewater