It’s not necessary for a pump station’s stoppage in working to cause an issue. It can still transfer wastewater or stormwater every day and yet be unable to cope with peak demand, require increasingly frequent maintenance or rely on control systems that are becoming difficult to sustain. It may still work, but the original model of the equipment may not be a reflection of the current situation.

Image credit: romtecutilities.com

Understanding this distinction is crucial for municipalities, developers and facility managers when planning improvements to infrastructure.

The Equipment that is failing isn’t the only issue

A wastewater lift station retrofit should begin with an assessment of the complete system, not simply the pump experiencing problems. Engineers must assess the water well, mechanical components and electrical components, as well as controls, discharge piping, as well as the current needs for pumping.

It is essential to be aware of the state of the wet well. It could be possible, if the structure is sound, to keep it and also replace old equipment. It may be cheaper to build a new station than if you kept the existing one. Retaining the existing infrastructure is only beneficial as long as it helps the proposed improvements.

The area of service has been changed.

A wastewater plant that was built decades ago could now be serving more homes, commercial buildings, or industrial operations.

The changes could have an impact on the flow rate and demands on operations. Lift station rehabilitation requires more than just restoring original specifications of the equipment. Engineers must evaluate the their current and future flows, the total dynamic head capacity of the equipment, and the reliability of operation.

The answer isn’t always to get a larger pump. The new equipment must be compatible with existing piping along with electrical and mechanical supply as well as controls. If you upgrade one component the problem could be in other areas.

Stormwater retrofits have different priorities

Retrofitting an existing stormwater pumping station could bring additional concerns due to the fact that the runoff can be affected by nearby development and rain. A station serving an detention pond may have different flow patterns than one that receives water through storm drains. Modifications to drainage infrastructure, such as new pavement or larger parking lots, may affect the frequency and quantity of water that is allowed to flow into the station.

Before recommending an upgrade to an existing stormwater pump station engineers should review the drainage area in which they are contributing. They should also consider peak flows expected, storage capacity and discharge conditions.

These results help determine if modernization of equipment is enough or whether the station requires more substantial reconstruction.

You should plan your construction in advance of when you cut off service

What the station’s capabilities will be during rehabilitation is a question which is frequently ignored. It is not possible to remove wastewater systems from operation without making arrangements for the flow control.

Depending on the available space and project needs The construction process may include temporary bypass pumping or installing an alternative infrastructure along the existing station.

The system could be required to be used in an emergency downpour. An engineering plan that is complete should contain the sequencing of installation, temporary operation, equipment integration and commissioning as well as replacement components.

Making the completed system simpler to operate

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

Its retrofit approach evaluates which mechanical, structural electrical and communication components are able to remain in place and which need replacement. The company also provides initial plans and estimates for budgets to help owners analyze project options.

After installation, initial testing and commissioning is conducted in conjunction with operator training and documentation. The successful rehabilitation projects will ensure that operators have a simple to maintain system.

Improve the System, Not Only Its Age

A pump station that is older isn’t a guarantee to be completely replaced. It’s possible that structures will remain functional for a long time even if the mechanical and electrical systems require updating. The key is to determine what can be retained safely and economically while ensuring the constructed station meets current as well as future needs.

When examining operating conditions the structural integrity, hydraulic requirements, as well as construction constraints, owners can make more informed investment decision.

It’s more than just getting an old station work again. To make sure the station is ready for any future projects it’s essential to improve the station.