Water & Wastewater Treatment Magazine
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34 WWT PUMP AND VALVE SUPPLEMENT 2019 In Depth: Pumping Stations 1. Avoid clogging and wasted energy Sewage and wastewater handling are some of the most complicated applications for pumping because the products must be able to handle solids, fibres, and stringy material. So much has changed in terms of wastewater pumping design over the past 60 years and managing energy costs has never been more important as they continue to rise across the globe. While the more efficient solutions on the market may come with a slightly bigger investment up front, it is worth familiarising yourself with the potential savings they can achieve. Pumps that feature sensing and built-in intelligence can save up to 70% on your energy bill compared to conventional pumping systems. In addition, you can also save up to 80% on vacuum cleaning costs by having a clog-free operation with clean wet wells. 2. Make sure the whole system design works together Paying attention to the overall system design pays off. Having the optimal station design, the proper float switch and li‚ing station is key to success. Designing a station is complex, and it is important to consider every critical aspect. Ideally, the design of a pump station aims to achieve the smallest possible footprint with the lowest possible cost, eliminating sedimen- tation and build-up of debris, and having the necessary operating conditions to handle variable inflow for optimal pumping. In addition to this, go for a design that's easy to install, repair and maintain. Don't forget the li‚ing station: preferably, the li‚ing station simplifies hoisting submersible pumps and gives quick pump installation in one hoisting action. Proper level regulation is critical for operational reliability. Lack of proper regulation can cause improper opera- tion, pump damage or, in the worst case, overflow resulting in environmental and economic consequences. 3. Intelligent control results in reliable pumping Driving out to a pumping station to When it comes to designing an efficient sewage pumping station, there is more that engineers and system designers must consider beyond choosing the right pumps. Here, Simon Barrett, Area Manager at Xylem, gives his six top tips for trouble-free operation in a wastewater pumping station What separates a good wastewater design from a great one? Xylem's Flygt Concertor is an example of an intelligent pumping system