News | June 18, 2014

Xylem To Supply Flygt PumpTechnology To Europe's Largest Wastewater Treatment Plant

Source: Flygt -- A Xylem Brand
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Xylem, a leading global water technology company focused on addressing the world's most challenging water issues, has won a significant contract to supply its Flygt brand submersible pumps and monitoring and control technology, as part of a project to upgrade Europe's largest, and the world's second largest, wastewater treatment plant located near Paris, France. Xylem will supply 94 Flygt submersible column pumps, from 40 to 300 kW, 32 centrifugal pumps from 6 to 275 kW, 15 pumps from 5 to 22 kW equipped with ejectors as well as the related accessories to recirculate, mix water and sludge through the basins and feed the facility's biological tanks with wastewater.

The ‘Achères Seine Aval' wastewater treatment plant treats about 1.5 million cubic metres of wastewater in the Paris region every day. Service Public de L'assainissement Francilien (SIAAP), the municipal authority that manages the city's urban wastewater treatment facilities, has undertaken a development programme to extend the existing biofiltration units and to build a new membrane treatment line in the plant. The modernisation of the system is necessary to meet the requirements of the European Water Directives. It will contribute to maintaining the water quality of the Seine River as well as increasing the treatment efficiency of the plant. The upgrading of the wastewater line of ‘Achères Seine Aval' plant began in 2002 and is due to be completed by 2021.

64 of Xylem's new Flygt Slimline propeller pumps will be used. These compact pumps mean that smaller discharge column sizes can be used instead of the column sizes used with conventional pumps, which results in a more compact and less costly pump station. Xylem will also provide all the fiberglass reinforced column pipes with flow straightening vanes and suction cones, the lifting accessories and the MAS 711 and Mini-CAS monitoring systems to supervise and protect each pump.

Mr Gaël BIRON, Project Director for the OTV and Degremont consortium responsible for overseeing the development project said, "We have been working with Xylem for several decades so we are well aware of their water and wastewater expertise and the quality of their technology. It was important for us to be able to provide for our customer energy efficient technologies and to improve the operating costs of the plant. A majority of pumps we're using incorporates Flygt's N-technology which prevents the pumps from clogging, enabling sustained high efficiency. Premium efficiency IE3 motors also help to minimize the energy consumption."

The first deliveries of Flygt pumps and controls will begin in March 2015 and the upgrade works are due to be completed by July 2018.

Xylem's Flygt pumps that will be used in this project include:

  • 18 LL 3602 Mixed-flow column pumps rated at 190 and 300 kilowatt
  • 8 PL 7081 propeller pumps (160kW), 4 PL 7065 (55kW), 46 Slimline PL 7040 (40kW) and 18 Slimline PL 7035 (40kW). All the propeller pumps are equipped with IE3 equivalent high efficiency motors.
  • 32 submersible pumps from 6 to 275 kW
  • 15 pumps from 5 to 22 kW each equipped with 1 to 6 ejectors

About Xylem
Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world's most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8B and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all -- that which occurs in nature. For more information, visit

SOURCE: Flygt -- A Xylem Brand