WARRENDALE, PA, April 5, 2007 -- The City of Waxahachie, Texas, U.S.A. has chosen Siemens Water Technologies to supply a 20.5 mgd (million gallons/day) (77.6 mld - million liters/day) submerged membrane filtration system for Phase I of the new Robert W. Sokoll, joint venture Surface Water Treatment Plant. The system consists of four individual Memcor CS trains, fed with settled water from the Tarrant Regional Water District raw water pipeline in North Central Texas. The 3.3-million euro plant is expected to begin operation in April 2009.
Located approximately 48 km (30 mi) south of Dallas, the City of Waxahachie has partnered with Rockett Special Utility District (SUD) to jointly construct the water treatment plant. Drinking water from the plant will help serve the northern half of the city as well as Rockett SUD and numerous wholesale customers across the county. The engineer for the project is Alan Plummer Associates, Inc. of Ft. Worth, TX.
The City chose the Memcor CS system because it concluded that the system provides the lowest cost per gallon of treated water compared to other membrane technologies. Other advantages of the system include: a physical barrier against harmful parasites like Cryptosporidium and Giardia as well as bacteria; flexibility in handling raw water fluctuations while providing consistently high-quality effluent and sustained capacity; and fully automated operation, including verification of system integrity.
Memcor submerged membrane systems operate in an open tank design. Feedwater typically flows by gravity into the membrane cell. A suction pump draws filtrate water through the membranes up to 12 psi (83 kPA). Submerged systems are ideal for retrofitting exiting basins and increasing capacity in a small footprint. The system has fully-automated processes including backwash, cleaning and membrane integrity testing. Membrane modules are isolatable in groups of four.
Waxahachie and Rockett SUD plan to expand the facility in 20 mgd (75.7 mld) phases to prepare for their growth as well as their wholesale customers' growth over the next 50 years. By 2060, the City and Rockett SUD and their customers expect they will need more than 80 mgd (302.8 mld). By the time construction of each phase is completed, the plant will be able to treat this capacity.
Siemens Water Technologies delivers cost-effective, reliable water and wastewater treatment systems and services to municipal, industrial, commercial and institutional customers worldwide.
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Also see:
-- "Siemens to build and operate control center for the Bratislava Waterworks Company"
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