PEWAUKEE, WI, Dec. 16, 2009 -- In October 2007 Layne Christensen added 1.8 MGD of Ultra Filtration capacity to the Lake Granbury Surface Water and Treatment System and upgraded the control and monitoring system for the existing 7.3 MGD UF system.

Now, two years later, these modifications have helped the Brazos River Authority more reliably deliver sustainable water supplies to its customers.

Background
Many communities in the water-stressed desert southwest are turning from over-burdened aquifers to surface water sources for potable water supplies. In 1969 the completion of the DeCordova Bend Dam on the Brazos River formed Lake Granbury, which now provides a surface water alternative to over-burdened aquifers.

However, the lake is brackish due to a subterranean salt bed outcropping which underlies and contaminates the waters of the Brazos River. To assure adequate potable water supplies, the Brazos River Authority established the Lake Granbury Surface Water and Treatment System, a Reverse Osmosis desalination plant located in Granbury, Texas. The resulting potable water is transmitted to the towns of Granbury and Acton.

Upgrade and Expansion
Due to increasing demand, the Brazos River Authority saw a need to upgrade and expand the Lake Granbury desalination facility and selected Layne Christensen Company's Membrane Technology Group to perform the work.

Layne Christensen was selected for the project based on their ability to provide the comprehensive engineering, programming, manufacturing, and construction services needed to successfully complete the project.

The primary focus of the project was adding a high capacity module to the UF system that provides high quality pre-filtered feedwater to the existing Reverse Osmosis system. Once completed, this module increased the facility's overall UF capacity by 1.8MGD to 9.3 MGD. A second important facet of the project was upgrading the existing control system to allow remote monitoring and control. This was invaluable in allowing Layne to support Brazos River Authority with troubleshooting and system adjustments on a virtually instantaneous basis, 24 hours a day.

About Layne Christensen
Based in Pewaukee, Wisconsin with offices throughout the United States, Layne Christensen's Water Resources Division has been resolving water quality problems for over a half century, installing hundreds of treatment systems throughout North America. For more information on Layne Christensen Company's Water Resources Division visit www.LayneWater.com

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