It doesn’t take the pump station to stop working for it to become a problem. It might still be able to move the water and wastewater daily however, it struggles during peak demand, require increasingly frequent maintenance or rely on control systems that are becoming difficult to manage. The equipment works, but its original design might not be able to reflect the changing conditions surrounding it.
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Understanding this distinction is crucial for the municipalities, developers and facility owners when preparing upgrades to infrastructure.
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 should evaluate the water well, the mechanical equipment and electrical components, as well as controls, discharge piping, and current pumping requirements.
It is important to be aware of the state of your wet well. If the structure of the wet well is still sound then you might be able to upgrade it with new equipment while keeping the existing structure. It’s less expensive to build the new station than you decided to preserve the current one. It is important to keep existing infrastructure in case improvements are possible.
Has the Service Area been changed?
A wastewater facility that was constructed years ago may now serve more homes, commercial buildings or industrial activities.
The changes could impact the flow rate and operating needs. Lift station rehabilitation requires more than just restoring the original specifications for the equipment. Engineers must evaluate the current and expected flows in the system, the dynamic head of equipment the operational reliability, as well the capacity.
The answer may not be one that is bigger. The new equipment has to work with existing piping, wet well, electrical supply, and controls. When one part is improved, this can lead to problems with other components.
Stormwater retrofits may have different priorities
Retrofitting an existing stormwater pumping station may bring additional issues due to the fact that runoff is influenced by the surrounding development and rainfall. Stations serving detention basins may have different inflow patterns than those receiving water through storm drains. Modifications to drainage infrastructure like new pavement or expanded parking spaces, could alter the timing and amount of water that is available to the station.
Before recommending a station for stormwater upgrade, engineers must review the drainage area that is contributing to the project the anticipated peak flows, storage capacity, discharge conditions, as well as the performance of the existing pump.
The information will help determine if the station requires to be reconstructed or if modernizing equipment is sufficient.
Design for the Construction Before Interrupting Service
One frequently overlooked issue is how the station will be operating during rehabilitation. It is impossible to shut down wastewater systems without having arrangements in place for flow control.
Based on the space available and project needs, construction may involve temporary bypass pumps or the installation of replacement infrastructure alongside the operating station.
The stormwater project also requires careful scheduling because the system may be required during unplanned rain. A comprehensive engineering plan comprehensive must include the sequencing of installation, temporary operation installation, equipment integration and commissioning as well as replacement components.
The finished System is much easier to use
Romtec Utilities is a provider of site-specific engineering supplies and solutions for Stormwater and Wastewater Pumping Applications.
The retrofit method evaluates which structural, mechanical, electronic, and communications components are able to remain in place and which need replacement. The company gives owners initial designs and budget estimates to help them evaluate possible options for the project.
Following installation, tests for startup and commissioning are conducted, followed by operator training and documentation. The successful rehabilitation process should provide operators with a system that they can maintain and understand.
Upgrade Your System and Not Limit Its Upgrades to its Age
A pump station that’s older might not need to be completely replaced. Certain structures could have years of use left even if their mechanical and electrical equipment requires modernization. The crucial thing is to decide what can be retained safely and economically while ensuring the finished station meets present as well as future needs.
By looking at the overall structure and operating conditions and the construction requirements and hydraulic constraints, owners are able to make more informed decisions.
The aim isn’t just to make a stale station perform again. The aim is to make sure that the newly upgraded system can take on the new work.