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WATER & WASTE TREATMENT
RAISING THE BAR FOR WASTEWATER PUMPING
Flygt Concertor intelligent pumping system
For more than 25 years, the iconic Flygt N-technology has been raising the bar for energy-efficient, clog-free wastewater pumping. Xylem’s senior global product manager, Synneve Henningson, was part of the engineering team that evolved the game-changing technology. In this Q&A, she discusses the journey from the original N design to today’s advanced solutions
. When was N-technology launched? A. Self-cleaning N-technology pumps were launched by Xylem’s Flygt brand in 1999. Since then, the pumps have become synonymous with high efficiency, low energy, clog-free pumping, with around three million sold globally across the commercial, utility, municipal and industrial sectors.
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The journey began with the N-technology impeller. Designed with relief groove and leading edge to prevent rags from clogging the impeller, the product created a new standard in which clog resistance was not determined by throughlet size. An example of true innovation, the
technology broke with convention for wastewater impeller design and changed the view that blockages were an acceptable consequence of wastewater pumping. The modular technology revolutionised submersible wastewater pumps and lowered total cost of ownership.
Q. Flygt N-technology now suits every wastewater pumping application. How has the product evolved? A. All Flygt N-pumps are designed for heavy-duty service in wastewater plants – from pump stations to retention basins and sludge treatment. Flygt’s engineers are continually working to evolve the pump’s design in response to today’s wastewater
40 JULY/AUGUST 2024 | PROCESS & CONTROL pumping challenges.
This includes designing and manufacturing seals, specifically for the harsh environments of wastewater. These seals protect the bearings and motor from ingress of water and are the keystone to longevity. By 2009, the team had developed Adaptive N-technology, enabling the impeller to move axially to let even larger debris through, as well as with hard-iron and chopper impeller versions. The Premium efficiency motor range followed in 2011.
Breaking even more new ground was the Flygt Concertor, the world’s first fully integrated intelligent wastewater pumping system, which launched in 2016.
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