The process would be easier if the water came in the exact same amount.
It’s not.
Wastewater entering a residential system could vary over the course of the day. Commercial and industrial buildings may have operating peak times. Stormwater conditions can dramatically change according to the weather. Demand for clean-water also fluctuates according to the type of application.
It is not enough to choose equipment that will meet a certain flow rate when designing a pumping station. Engineers must understand what kind of environment the system will meet.
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Think in Operating Conditions and not just the maximum capacity
The maximum flow is important however, it is just one element of the station’s operation. Imagine a wastewater system has been designed to accommodate a high volume of flow. The majority of the time the flow that enters it could be much lower. During these normal periods however, the station has to perform as it should.
This raises questions about wet-well dimensions pumps, their operation and controls the head, conditions of the pump, as well as how the equipment will handle the changing demands.
When designing a pumping system for package use It is crucial to consider the site requirements and not only the pump’s capacity.
The cycle of water that runs throughout the day
A wastewater lift station serving homes, businesses, or municipal infrastructure may experience changing influent conditions throughout its operating cycle.
The station’s control strategy determines how the system takes in wastewater and runs its pumps. Dimensions of the structure, pumping equipment, valves, pipes, electrical components and controls all have roles in that process.
Other site-specific considerations may also affect the design. Romtec Utilities can incorporate auxiliary equipment such as grinder vaults and odor control equipment when required by the application. It’s more economical to design stations around a specific project rather than implementing an identical configuration to every wastewater facility.
Stormwater Changes Much More Fast
Stormwater offers a different type of operating situation. A stormwater facility can be relatively quiet during dry conditions, and then encounter a significant inflow of water during a severe weather occasion. Stations can be a part of larger flood control techniques, such as detention or treatment thus the stormwater strategy is an essential part of system design.
Romtec Utilities evaluates factors including flow rates that are required, head conditions, size of the system the site’s requirements, as well as environmental aspects when developing the systems.
A station for a commercial property could therefore appear completely different from one that is designed for a municipal stormwater application.
Both head conditions and flow are important
Moving 1,000 gallons of water is only part of the engineering task. Engineers must be aware of the direction of the water and how much resistance they will face.
Pumps operate with different head sizes based on the configuration of the system including the piping as well as discharge conditions.
This connection between head and flow is another reason to select the right pump solely on its rating is not enough. The design and technology of the station have to suit the hydraulic requirements of the entire application.
The design should reflect the conditions that the station will actually experience
Romtec Utilities designs and develops custom pumping systems that meet the requirements of wastewater treatment stormwater management, clean water, industrial applications, boosters, and more. The design process begins with preliminary designs plans, budgeting, set-ups, system supplies, documentation, startup and testing.
The underlying engineering principle is straightforward: real pumping systems don’t spend their entire lives working under one convenient set of conditions.
They are subject to fluctuating flows, shifting demands, and project-specific hydraulic needs. It is important to design a station that can deal with this situation.
