A Stormwater Retrofit Should Consider the Entire Drainage System

A pump station that is aging doesn’t have to stop working before it’s a problem. Even though it may transport stormwater and wastewater on a daily basis The pump station may struggle to meet demands that are high. It could also require more regular maintenance. The equipment functions, however the design it was originally designed for may no longer reflect the conditions surrounding it.

Developers, municipalities, and facility operators, acknowledging the difference is an essential part of planning infrastructure improvements.

Image credit: romtecutilities.com

It is important to look beyond the equipment that is inoperable

Retrofitting a wastewater lift station needs to start with an evaluation of the whole system, not just the pump which is operating improperly. Engineers should evaluate the water well, mechanical components, electrical components, controls, discharge piping, as well as the current needs for pumping.

It is crucial to keep an eye on the state of your wet well. If its structure remains sound it might be possible to retain it when replacing equipment that is no longer in use. It is less costly to build an entirely new station than if you kept the existing one. Retaining existing infrastructure is only worthwhile for if it can support the proposed improvements.

The service area has changed.

The wastewater station that was constructed a few years ago is now able to be used to serve more homes, businesses, as well as industrial processes.

The changes could impact flow rates and operating demands. Rehabilitation of a lift station requires more than just restoring the original equipment specifications. Engineers must assess the their current and future flows, the total dynamic head capacity of equipment, as well as the operational reliability.

It’s more than enough to buy a bigger pump. New equipment needs to work with the existing system of piping Wet wells, wet wells and control systems, electrical supply etc. If you improve one component there is a chance that it will cause issues with other parts of the system.

Priorities for stormwater retrofits are different

A stormwater pump station retrofit introduces additional considerations because runoff can change dramatically with rainfall and surrounding development. The flow pattern of stations that serve an area for detention could differ from one that receives water directly from the storm drain. Any changes to drainage infrastructures like new pavements or expanded parking spaces, could alter the timing and amount of water that’s allowed to flow into the station.

Before recommending a station for stormwater upgrade, engineers must review the drainage area of the station and the expected peak flows storage capacity, discharge conditions and current pump performance.

These findings can help determine whether equipment modernization will be sufficient or if the station requires more substantial reconstruction.

Plan Construction Before Interrupting Service

One frequently overlooked issue is how the current station will function during the rehabilitation. The general rule is that wastewater systems can’t be shut down without a plan to control flow.

Construction may include temporary bypass pumps, or the installation of a replacement infrastructure with an operating station, dependent on the available space and the specific requirements of the project.

Stormwater projects also require careful scheduling because the system may be needed in the event of an unexpected rainstorm. A complete engineering plan should address installation sequencing in addition to temporary operations, integration of equipment and commissioning, not just the replacement of the components.

Making the system more user-friendly to use

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

The retrofit approach decides which electrical, structural, mechanical and communication components are to be retained and which require replacement. The company offers owners preliminary designs and budget estimates to assist them in evaluating possible options for the project.

After installation, testing the startup the commissioning process, as well as training for operators are important to ensure that the newly upgraded station is functioning in accordance with its specifications. A successful rehabilitation program will provide the operator with a station they can maintain and understand.

Upgrade your system, not only its age

It’s not required to replace an old pump station. There is a chance that certain structures will continue to be functional for years, regardless of whether the mechanical or electrical systems require modernization. It is crucial to determine what is safe and effectively preserved while ensuring the station is able to meet current and future requirements.

Owners are able to make better investment choices by studying the conditions of operation as well as structural integrity and hydraulic requirements together.

It’s not just about trying to make an aging station perform again. The objective is to ensure that the newly upgraded system can take on the new work.

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