Pump stations and sewer wet wells are critical components of wastewater treatment systems. They act as wastewater entry points, directing it to sewage treatment plants where it can be properly treated. But how exactly do they function? Let’s go over the fundamental components of a sewer wet well and pump station, as well as the various types of pumps used in them.
Sewer Wet Well Basics
A sewer wet well is essentially a large concrete tank that collects wastewater from an inlet structure or manhole and transports it to a treatment facility. The primary function of the wet well is to act as a buffer for any sudden influxes in water flow, preventing the downstream system from becoming overloaded. Furthermore, these tanks have a shallow sloped bottom that aids in the separation of solids from liquids, making them easier to remove when necessary.
Pump Station Basics
The pump station is in charge of transporting wastewater from one location to another, typically from lower-lying areas (such as drainage basins) to higher-lying areas (like wastewater treatment plants). This is accomplished with electric pumps that, depending on their type, use timers or pressure sensors. These pumps typically range in size depending on their application and can include submersible pumps, non-clog centrifugal pumps, reciprocating plunger pumps and other types of solids-handling centrifugal pumps.
Types of pumps used in pump stations
- Submersible Pumps: Submersible pumps are submerged entirely underwater during operation, allowing them to be used in deep wells with larger amounts of liquid than standard pumps can handle. They are also relatively quiet compared to other models thanks to their enclosed design.
- Non-Clog Centrifugal Pumps: Non-clog centrifugal pumps feature impellers with large open passages that help prevent clogging when handling debris-filled water sources like sewers or floodwaters. Additionally, these models tend to use less power than other types due to their efficient design.
- Reciprocating Plunger Pumps: Reciprocating plunger pumps feature pistons within cylinders that move up and down at regular intervals to create suction and pressure points which enable them to push water through pipes over long distances with ease. As such, they are often used in applications where high head pressures are needed like sewage lift stations or irrigation systems.
Why are they important?
Sewer wet wells and pump stations are critical components of any water and sewage system. Without them, the environment would be subjected to harmful pollutants and flooding due to insufficient drainage infrastructure. Furthermore, by periodically maintaining water levels in wet wells, these pumps help to ensure that drinking water remains safe from contamination. Their ability to transport large volumes of wastewater over long distances is also important for wastewater management that is both safe and efficient.
AWD Civil is an Australian civil construction company that works with a variety of clients, including local governments and private developers. Our team has the knowledge and experience to design and build a wide range of water infrastructure solutions. We are dedicated to assisting our clients in creating a better future for our communities and the environment. Call us at (07) 3200 5766 to learn more about our products and services.