Sweden to receive largest UV disinfection plant for drinking water

Sweden will soon receive ultraviolet drinking water treatment solutions from Xylem for its largest UV disinfection project ever.

SCHAFFHAUSEN, SWITZERLAND, July 17, 2013 -- Sweden will soon receive ultraviolet (UV) drinking water treatment solutions for its largest UV disinfection project ever. Xylem, (NYSE: XYL), a leading global water technology company focused on addressing the world's most challenging water issues, has won a contract to provide the Scandinavian country with the progam that will help deliver clean, treated drinking water to 900,000 people across 16 municipalities.

Xylem will provide four WEDECO K- Series UV disinfection systems, to upgrade the Sydvatten AB Waterworks in the Scania (Skåne) region in southern Sweden. Further, Xylem's WEDECO K143 UV systems were chosen for their flexible and innovative design, low lifecycle costs, negligible environmental impact, and ability to handle large volumes of water in the most efficient manner possible, while catering to potential future plant expansion.

Harnessing the power of UV disinfection eliminates the risk of harmful by-product formation, such as trihalomethanes (THMs) which can be caused by chlorination. By changing the DNA of waterborne pathogens, UV prevents further cell division, rendering more than 99.99 percent of all pathogens harmless in seconds.

The WEDECO K143 systems each feature 13 rows of 12 UV lamps and will treat a total of 4,300 cubic meters of water per hour. The vessels were designed with installation and future expansion in mind by having the various sections bolted rather than welded together. This met the requirement of having no section longer than 2.5 meters and allows the possibility of adding another section of lamp rows at a later date. In this way the solution is future-proofed to cater for increased demand as the population grows.

Xylem is working on this project together with their Swedish Representative -- Christian Berner AB -- which led the tender process. Xylem's WEDECO UV Systems will complement existing traditional treatment methods to eliminate bacteria, viruses and parasites.

The Sydvatten AB Waterworks drinking water treatment plant has been in operation since 1966. The facility will have the capacity to handle a potential 25 percent increase in water volume to support future population growth.


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