Pump Station Retrofits and the Challenge of Limited Space

A deteriorating pump station isn’t required to shut down before it’s a problem. The pump station may be able to handle the flow of wastewater or stormwater every day but struggle when the demand is high. It may require more frequent maintenance or rely on control systems that are hard to maintain. The equipment works, but its original design might no longer reflect the conditions around it.

For municipal governments, developers and facility operators, acknowledging the distinction is an important part of planning infrastructure improvements.

Image credit: romtecutilities.com

You should look past the equipment inoperable

The retrofit of a water lift station should start by evaluating the entire system and not just the pump. Engineers must assess the wetwell, mechanical equipment and electrical components. They should also consider discharge piping and current pumping needs.

It is essential to be aware of the state of the wet well. It is possible, if the structure is sound, to keep it and replace outdated equipment. This can reduce construction requirements compared with building an entirely new station. It is important to keep existing infrastructure if the upgrades can be made.

Is the service area changing?

A wastewater plant that was built years ago may now serve additional homes, commercial buildings or industrial facilities.

These changes may affect the rate of flow and operational needs. Successful lift station rehabilitation therefore requires more than restoring the original equipment specifications. Engineers should assess future and planned flow rates as well as the equipment’s capacity and performance.

It’s not enough to simply purchase a larger pump. New equipment should work with the existing piping system as well as wet wells, electrical supply, controls and so on. When one part is upgraded, this can lead to problems with other parts.

Stormwater Retrofits Have Different Priorities

Retrofitting a station to pump stormwater brings additional considerations, as the runoff patterns are affected by rainfall and nearby development. The inflow pattern of an area that has a detention area may be different from if it is receiving water directly through the storm drain. Any changes to drainage infrastructures like new pavements or expanded parking areas, could affect the frequency and quantity of water that can be capable of reaching the station.

Before recommending a new stormwater system, engineers need to examine the drainage areas that contribute to the project as well as the expected peak flows and the storage capacity available, discharge conditions and the performance of the pump.

These results can be used to determine whether modernization of equipment is enough or if the station needs more substantial reconstruction.

Plan the Construction Before Interrupting Service

The most often overlooked concern is how the current station will operate during rehabilitation. It is impossible to close down the wastewater systems without arranging for flow control.

Construction could involve temporary bypass pumps as well as the installation of replacement infrastructure along with an operating station, in accordance with the space available and the requirements of the project.

It is equally important to plan ahead for stormwater projects, as the system could be needed in the event of a sudden rainstorm. A comprehensive engineering plan must include installation sequencing the temporary operation, installation integration, and commissioning, not just the replacement of components.

Create the Final System simpler to use

Romtec Utilities is a provider of engineering services for sites supply and solutions for Stormwater and wastewater Pumping Applications.

The retrofit process decides which electrical, structural mechanical and communications components should be kept and which components require replacement. The company gives owners preliminaries plans and estimates for budgets to help them evaluate possible options for the project.

After installation, startup testing and commissioning is conducted, followed by operator training and documentation. A successful rehabilitation project should provide operators with an easy-to-maintain system.

Upgrade Your System and Not Limit Its Upgrades to its Age

A pump station that is older might not require to be completely replaced. It’s possible that structures will continue to be functional for many years, even if the mechanical and electrical systems need modernization. It is crucial to know the things that can be maintained safely and cost-effectively, while ensuring that the station’s finished product is in line with current and future requirements.

By looking at operating conditions, the structural strength, hydraulic requirements as well as construction constraints, owners can make more informed investment decision.

The aim isn’t just to make an old system work again. The goal is to ensure that the newly upgraded system can take on the new work.

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