The process would be simpler if the water travelled at exactly the same speed.
It’s not.
The amount of wastewater that flows into a household water system may fluctuate throughout the day. Commercial and industrial facilities might encounter peak operating times. Stormwater flow can be affected by weather conditions. The demand for clean water can also increase and decreases depending on the usage.
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In order to design a pump station, it’s not just about selecting the best equipment to be able to handle a particular flow. Engineers must be aware of what kind of environment the system will face.
Don’t only think about maximum capacity, but also operational conditions
The greatest flow is vital, but this is only one aspect of the station’s operations. Imagine a system for wastewater that was designed for a high peak-flow. Typically the flows coming in can be considerably lower. The station is still required to be operational during normal timeframes.
This introduces questions about wet-well sizes, pump operation head conditions, controls, and how equipment reacts to demand fluctuations.
The design of a well engineered package pumps system considers the needs of the location, instead of focusing on the maximum pump capacity.
Wastewater Has Its Own Daily rhythm
The influent conditions at the wastewater liftstation that serves households, businesses or municipal infrastructure could change in the course of the operation.
The station’s control plan will determine how the system collects wastewater and operates its pumps. The dimensions of the structural components, pumping equipment, piping and pumps as well as electrical parts and controls all play a a role in this process.
Design may also take into account other considerations for the specific site. Romtec Utilities is able to include additional equipment, such as grinder vaults or odor-control equipment, depending on the application. The result is a station that is designed to meet the requirements of the project rather than a generic configuration that is applied to all wastewater sites.
Stormwater Changes Much More Rapidly
A stormwater lift station may see relatively little activity during dry conditions and then face substantially greater inflow during a weather event. Stations may be part of bigger flood control and treatment, detention or control strategies which is why the stormwater plan is a crucial element in the design of the system.
Romtec Utilities evaluates factors including needed flow rates along with head conditions, system size, site requirements, and environmental factors when designing the systems.
A station for a commercial property could therefore appear completely different from one that is designed for municipal stormwater applications.
Both head conditions as well as flow are critical.
Engineers should also be aware of what direction the water is going and what obstacles they be able to overcome. Engineers need to be aware of where the water will go, and the resistance that must be overcome by the pumping system.
The head condition of the pump is affected by a number of factors which include elevation variations, piping configurations, discharge conditions and other system features.
That relationship between flow and head is one reason that choosing a pump based on a capacity rating isn’t enough. The design and technology of the pump must match the hydraulic requirements of the particular application.
Create a design for the conditions the Station is likely to experience
Romtec Utilities designs and develops customized pumping systems to address the needs of wastewater stormwater management as well as industrial applications, boosters and more. The procedure may involve the preliminary design and budgeting process, complete plan sets systems, supply documentation as well as startup, testing and commissioning.
The fundamental engineering principle is straightforward: real pumps don’t have to spend their entire lives operating under one ideal set of conditions.
They have to contend with changing flows, changing demand and project-specific hydro requirements. This fact must be taken into account when designing a successful station.