News | June 8, 2015

Xylem Unveils Oxidation-Enhanced Biologically Active Filtration System For Drinking Water

Source: Leopold -- A Xylem Brand
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Taste and odor issues eliminated with customised solution

Xylem Inc., leading global water technology company, has unveiled a new drinking water treatment solution that removes the most challenging contaminants, including ‘contaminants of emerging concern’ (CECs), at ACE 15, the American Water Works Association annual conference and exposition, taking place at Anaheim, California, June 7-10. Xylem’s Leopold Oxelia is a multi-barrier solution; an oxidation-enhanced, biologically active filtration system that enables the production of a safe and reliable supply of clear and biologically-stable, treated water with no taste or odor issues.

In a survey conducted by the Department of Civil and Environmental Engineering at Arizona State University, 16 percent of North American utilities experience serious taste and odor problems and spend an average of 4.5 percent of available budget managing taste and odor problems, predominantly caused by ‘natural organic material (NOM)*.

As contaminants vary in different water sources, the innovative system allows for customer specific designs and can be tailored to cater for different treatment goals. A variety of technology options for disinfection and oxidation, coupled with biofiltration, can be selected depending on the biological and chemical contaminates in the source water, as well as the energy and regulatory requirements.

“Leopold Oxelia’s oxidation step can include ozone, ozone-based Advanced Oxidation Processes (AOP) or ultraviolet (UV)-based AOP,” explained Tony Callery, product manager for Xylem. “For example, if water sources experience pollution with taste and odor compounds and other micro pollutants such as pesticides and pharmaceutical residues all year round, ozone-based AOP should be considered. However, if the water source experiences seasonal contamination with taste and odor compounds and a high disinfection level is required, UV-based AOP should be used. Leopold Oxelia offers the flexibility to deal efficiently and effectively with a range of different treatment requirements, producing drinking water with high biostability. Higher biostability reduces chlorine demand in the distribution system and disinfection by-products such as trihalomethanes or chloramines.”

Leopold Oxelia has undergone several years of intensive testing with the Public Utility Board (PUB) in Singapore. Xylem’s solution is designed to optimize capital and operating costs while helping to reliably deliver safe drinking water meeting today’s regulations. The solution’s integrated analytics and feedback control provide safe, reliable and cost effective process operation. Oxelia combines Xylem’s Leopold filtration expertise with Wedeco’s renowned UV and ozone experience.

*AWWA Research foundation, Ozone-enhanced biofiltration for Geosmin and MIB removal, 2005.

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 2014 revenues of $3.9B and approximately 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability Index for the last three 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: Leopold -- A Xylem Brand