Engineering would be much easier if water came at the same time.
It’s not.
Wastewater entering a residential system could vary over the course of the day. Commercial and industrial facilities could be operating at peak times. The conditions for stormwater can drastically change depending on the weather. Demand for clean-water also fluctuates dependent on the use.
As a result, designing pumps isn’t just the matter of identifying a flow number and selecting equipment to meet it. Engineers must understand the range of conditions the system is likely to be exposed to.
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Consider the Operating Conditions and not just the Maximum Capacity
The flow rate is of course crucial, but it represents only one element of station operation. Imagine a system for wastewater designed to provide a high peak flow. For the most part, the incoming flow is less. When this happens when the station is not operating, it must operate properly.
It also raises issues related to wet-well sizing and the size of the pump controls conditions for head, how to modify equipment when demand changes.
A properly engineered package pumping system brings these considerations together around the actual requirements of the site instead of treating maximum pump capacity as the entire design objective.
The Wastewater Industry has its own daily Rhythm
The conditions for the water that flows through the wastewater liftstations that serve households, businesses or municipal infrastructure could change in the course of its operation.
The station’s management strategy determines how the system manages the collection of wastewater and its pumps. The structural dimensions, pumping equipment, valves pipes, electrical components and controls all have roles in the process.
The design might also include aspects specific to the particular site. Romtec Utilities is able to include additional equipment, such as grinder vaults, or odor control equipment, based on the specific application. It is cheaper to create the station around a specific project rather than implementing an identical configuration to every wastewater disposal site.
Stormwater may change faster than you think.
Stormwater is a totally different type of operation. A stormwater facility can be quite quiet during dry conditions, and then see a massive inflow of water following a severe weather storm. The station could be a part of a comprehensive flood-control plan or a detention, treatment or drainage plan.
When constructing these systems Romtec Utilities considers a variety of aspects, such as the flow rate required and head condition, the dimensions of the system, site requirements and environmental concerns.
The design of a station that is designed for commercial use could differ significantly from the design of a station built to manage stormwater in a municipality.
Both head conditions and flow are important
Moving 1,000 gallons is only part of the engineering task. Engineers also have to understand the direction of the water and what resistance the pumping system has to overcome.
The head of the pump is influenced by several factors, including elevation changes as well as piping configurations and discharge conditions, and other system features.
This connection between flow and head is another reason to select a pump solely based on its ratings isn’t enough. The pump technology and the station configuration must be matched to the conditions of hydraulics for the entire application.
The station should be designed to match the actual conditions it will experience
Romtec Utilities creates customized pumping system for stormwater, wastewater and clean water applications. They also design systems for boosters, industrial and other purposes. The design process begins with preliminary designs and budgeting, as well as plan sets along with system components, documentation, starting and testing.
The principle behind the design is quite simple: pumping systems do not need to be able to operate for their entire life under the same set of conditions.
They face changing flows, changing demand and particular hydro requirements of the project. This is a fact that must be taken into account when designing a successful station.