It could make engineering easier if all water came at the same speed.
It doesn’t.
Wastewater entering a residential system is likely to fluctuate throughout the day. Industrial and commercial buildings could have operating peaks. Stormwater conditions can dramatically change in response to weather conditions. The need for clean water can also change according to the application.
It’s not enough to select equipment that can provide a certain flow when designing an equipment pumping station. Engineers should be aware of possible conditions in which the system can be utilized.
Image credit: romtecutilities.com
Think in Operating Conditions Consider Operating Conditions, not just maximum capacity
It’s obvious that maximizing flow is a crucial factor however, it’s just one aspect of the operations of the station. Imagine that a wastewater treatment system was designed to handle an enormous maximum flow. For the most part the incoming flow is lower. However, the station has to perform as it should during normal timeframes.
It also raises issues related to the sizing and size of the pump, control conditions for head, how to modify equipment when demand changes.
A properly designed package pumping system brings these elements together around the actual requirements of the location, instead of using the highest capacity of the pump as the primary design goal.
Everyday, the Wastewater System has its own Theme
A wastewater lift station serving homes, businesses, or municipal infrastructure may experience changing influent conditions throughout its operating cycle.
The station needs an appropriate control system that permits the system to turn on the pumps and then collect the water. The process involves structural dimensions as well as pumping gear, valves and pipes, as well as electrical components.
Design can also include other site-specific considerations. Romtec Utilities is able to include auxiliary equipment, like grinder vaults, or odor control equipment, depending on the needs of the. The result is a facility engineered around the project rather than a generic configuration which is used at every wastewater site.
Stormwater can change much faster
Stormwater offers a different kind of operating environment. During dry weather the stormwater lift station is likely to not be utilized much. However, during severe weather conditions, the station is likely to witness a significant rise in activity. It could be part of a flood control plan or even a detention, treatment or drainage plan.
Romtec Utilities takes into consideration factors such as the flow rate that is required along with head-related conditions, the system size as well as the requirements of the location and environmental considerations when designing these systems.
The design of a station that is designed for a commercial project may be very different from the design of a station designed to manage stormwater in the municipal system.
Head Conditions are Important as well as Flow
The ability to move 1,000 gallons is just part of the engineering problem. Engineers must know the direction of this water and how much resistance it will encounter.
Pumps can operate at various head levels based on the configuration of the system like the piping or discharge conditions.
The connection between flow and head is one reason simply choosing a pump based on a capacity rating doesn’t suffice. The technology of the pump and station configuration must be matched to the hydraulic parameters throughout the application.
The station should be designed to match the conditions that it will experience
Romtec Utilities creates customized pumping system for stormwater, wastewater and clean water systems. They also develop systems for industrial, boosters and other purposes. The process can include budgeting and design in the beginning and plans for complete systems, supply, documentation, and startup, testing and commissioning.
The principle of engineering that underlies it is quite simple: genuine pumping systems don’t spend their lives operating under one suitable set of circumstances.
They should also take into consideration the specific hydraulic requirements of the project, along with the changing flow, demand and needs. It is vital to create a station that is able to cope with the challenges.