When an Aging Lift Station Needs More Than a New Pump

It’s not necessary for an entire pump station to stop working for it to become troublesome. Although it could transport stormwater and wastewater on a daily basis however, the pump station could be unable to meet peak demand. It could also require more frequent maintenance. While the equipment remains operational however, the design it was originally designed for may not be suited to the present conditions.

Image credit: romtecutilities.com

The need to plan infrastructure improvements is vital for city officials, developers, and managers of facilities.

The equipment that fails isn’t the only problem

A wastewater lift station retrofit should begin with an assessment of the complete system, not simply the pump experiencing problems. Engineers must evaluate the wetwell as well as mechanical and electrical components. They should also think about the discharge pipe and the current needs for pumping.

The state of the well is particularly important. It is possible, in the event that the structure is sturdy, to keep it and then replace the outdated equipment. It’s less expensive to build an entirely new station than if you decided to preserve the existing one. However, maintaining existing infrastructure only makes sense in the context of planned improvements.

Did the area of service change?

A former wastewater plant could be serving houses, industrial buildings, or commercial buildings.

These modifications could affect the flow rate and operational demands. In order for lift stations to be effectively rehabilitated, it’s not enough to revert back to original specifications. Engineers should evaluate current and anticipated flows, total dynamic head capacity of the equipment, and the operational reliability.

A larger pump isn’t automatically the solution. New equipment needs to work with the existing piping system Wet wells, wet wells and electric supply, controls and so on. Otherwise, improving one component can cause issues elsewhere.

Stormwater retrofits may have different priorities

Retrofitting a stormwater pump station brings additional concerns because runoff patterns can alter dramatically as rainfall increases and the surrounding development. A station that serves an detention pond may have distinct inflow patterns compared to one receiving water directly through storm drains. The addition of new pavement, larger parking spaces, or a change in drainage infrastructure could alter the quantity and frequency of runoff reaching the station.

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

These results help determine if equipment modernization will be sufficient or if the station requires greater reconstruction.

Design for the Construction Before Interrupting Service

How the station will function in the event of rehabilitation is a concern that is frequently left unanswered. The general rule is that wastewater systems cannot be shut down without a plan to manage flow.

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

Stormwater projects also require careful scheduling since the system might require maintenance during rain events that are unexpected. The engineering plan must contain the installation process, temporary operations and equipment integration.

Make the Finished System Easier to Operate

Romtec Utilities offers site-specific engineering solutions and equipment for wastewater and stormwater pumps.

The retrofit approach determines which structural, electrical mechanical and communications components should be kept and which need to be replaced. The company also provides initial plans and estimates for budgets for owners to evaluate their project alternatives.

After installation, testing the startup the commissioning process, as well as training for operators are essential to ensure the newly renovated station operates as designed. The successful rehabilitation projects will ensure that operators have a simple to maintain system.

Upgrade Your System and Not Just it’s Age

An older pumping station isn’t a guarantee for replacement. Even if electrical and mechanical equipment is outdated, some structures can still be beneficial for years to come. It is essential to identify the things that can be maintained safely and cost-effectively, while making sure that the final product is in line with current and future requirements.

By looking at the overall working conditions and structural integrity as well as the hydraulic requirements and construction restrictions, owners are able to make more informed choices.

It’s not just about making an old station operational again. The aim is to make sure that the upgraded system can handle the upcoming work.

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