Xylem, a leading global water technology company dedicated to solving the world’s most challenging water issues, has been awarded a contract to provide advanced filtration technology to the Metropolitan Water District of Southern California’s F.E. Weymouth Water Treatment Plant in La Verne, California as part of a project to retrofit the plant with biologically active filtration and ozone.
Xylem will supply its Leopold Type XA underdrains with I.M.S 200 media retainers and Leopold dual media sand and anthracite to the plant which treats water from the Colorado River Aqueduct and the State Project Water (SPW) California Aqueduct.
Jim Kostelecky, Weymouth Plant manager, said, “The plant was placed in service in 1941, initially with mono-media filters and a clay tile underdrain. As the plant was expanded concrete tee-pee underdrains were installed and all of the filters were converted to dual media filters. The Xylem Leopold Type XA underdrains provided us with an opportunity to remove the old underdrains and support gravel and install substantially deeper layers of sand and anthracite, without a significant impact to the plant’s existing hydraulic profile. Based on previously conducted full scale testing it is anticipated that the new retrofit filters will provide a far more robust filtration process, which will be in service for another 75 years or more.”
Matt Schomaker, Technical Sales Manager for Xylem Leopold products in North America, said, “Our application knowledge and experience as well as our filter media application and processing expertise were key factors in securing this contract. A highly specialized media specification was desired by the Metropolitan Water District to enhance filtration performance. The Leopold Type XA was the preferred underdrain on this project due to its innovative design, efficient backwash performance, and reliability that comes with the solution’s increased uplift resistance.”
Construction on the plant is already underway and phase 1 of the new system is due to be operational in Q1 2016.
Xylem’s Leopold I.M.S 200 media retainer will replace up to 14 inches (35.6 cm) of support gravel for an even lower profile, which allows for additional driving head and increased filter run times. The Type XA underdrain utilized on this project is ideal for either new installations or retrofits and offers unsurpassed backwash air and water distribution, reliability, and performance. Type XA also offers increased uplift resistance of 30 pounds per square inch (PSI) which is more than any underdrain on the market.
In total, Xylem will supply 92,736 square feet of Leopold Type XA Underdrain with I.M.S 200, 3,284 tons of sand, and 5,738 tons of anthracite as part of the project.
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, New York, with 2015 revenue of $3.7B and approximately 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability Index, North America for the last four years for advancing sustainable business practices and solutions worldwide, and the Company has satisfied the requirements to be a constituent of the FTSE4Good Index Series each year since 2013.
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 www.xyleminc.com.
* Based on filter square footage
SOURCE: Leopold -- A Xylem Brand