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What separates a good wastewater design from a great one?

03 May 2019

Simon Barrett, Area Manager at Xylem advises on six things an engineer and systems designer for commercial buildings must consider for trouble-free operation in a wastewater pumping station.

1. No clogging, no wasted energy. Just trouble-free pumping

Sewage and wastewater handling are some of the most complicated applications in a building 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 with the potential savings they can achieve. For example, Xylem’s Flygt Concertor features built-in intelligence capable of sensing the operating conditions of its environment and adapts its performance to provide feedback to pumping station operators. A Flygt Concertor pump can save up to 70 percent on your energy bill compared to conventional pumping systems. In addition, you can also save up to 80 percent on vacuum cleaning costs by having a clog-free operation with clean wet wells, as well reducing the traditional cabinet by 50 percent.

2. A system design that works together

Paying attention to the overall system design pays off. Having the optimal station design, the proper float switch and lifting station is key to success. Designing a station is complex. 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 sedimentation 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 easy to install, repair and maintain. Don’t forget the lifting station. Preferably the lifting 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 operation, pump damage or, in the worst case, overflow resulting in environmental and economic consequences.

Read the full article in the May issue of DPA

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