The Engineering Behind Moving Water Uphill and Against System Pressure

On paper, a project for pumping might seem straightforward: water must be pumped from one place to another. However there are numerous factors that affect the distance between two points, including elevation as well as flow rate, solids, pressure, storage capacity and maintenance access.

Image credit: romtecutilities.com

For Romtec Utilities, designing a pump station begins by defining those operating conditions rather than selecting equipment from a standard catalog. Preliminary designs and budgetary information can be created based on what the project will actually require.

The first step is to ask: What Are We Moving?

The technology changes instantly.

Domestic sewage is often contaminated with solids and experience significant variations in flow. A wastewater lift station has to be able to move the wastewater safely when gravity conveyance is inaccessible or not sufficient. Engineers therefore need to consider the expected inflow, peak conditions and pumping capacities, wet well behavior, discharge requirements, as well as how the facility will operate and maintained.

The water challenges faced by industrial facilities are different. Fluids that are oily, caustic or possess high temperatures or pressures might be required by a manufacturing or processing facility. Romtec Utilities designs industrial systems to support a variety of applications, from power generation and food processing to data centers pharmaceutical waste, oil and gas plants.

Rainfall may create a completely different operating pattern

Stormwater systems are often inactive for long stretches of time but then suddenly they face a large volume during the course of a storm.

A stormwater pumping station that is part of an egress basin needs to, for instance, work in conjunction with the bigger drainage plan for the site. The runoff enters the detention basin. The temporary storage manages the immediate volume and the pumping system transports the water collected to an approved discharge point.

Romtec Utilities provided this solution for the creation of the Norco business park in California. A pumping system was needed to empty the detention basin and then discharge it into the stormwater network. This station had to be constructed as part of the drainage infrastructure instead of being viewed as isolated equipment.

The term “package” does not have to mean off-the-shelf

It’s a common belief that a pumping system used for packages is just a collection of predetermined elements.

In the case of engineered infrastructure packaging could mean that all major components are incorporated into a single system. Controls, pumps and meters as well as the structural elements and other equipment, are able to be picked depending on the needs of the.

It is particularly useful for connecting a new system to the existing infrastructure. In municipal and industrial structures, there’s not enough space or a complete clean environment for the installation. The equipment may have to be adapted around existing structures, piping systems or electrical systems as well as operating schedules.

Capacity Planning has real consequences

The cost of undersizing increases as the facility expands.

Romtec Utilities, a Portland International Airport utility company, created and supplied the sewer interceptor station for the PDX Next project. The new station needed to be designed to have double the capacity of peak flow as the airport expanded.

This is a key element of engineering: specifications for the design should not just be a reflection of what the installation can handle during an average afternoon. Engineers should be aware of what happens at peak demand.

The job isn’t done until the Equipment is delivered

Drawings and calculations may eventually become an operating system. Installation coordination with startup and testing, documentation and operator understanding are all vital to ensure long-term success.

A well-engineered pumping system is largely determined by what happens years after construction. If the flow increases when a major storm hits, or equipment requires maintenance, the decisions made during the initial design phase become apparent.

For Romtec Utilities, integrating those decisions into a complete project-specific pumping solution helps turn the equipment pieces into an infrastructure designed to handle the conditions it will actually face.

Subscribe

Recent Post