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Lee Kuan Yew Water Prize-Winning Orange County Water District Utilizes MEMCOR® by Evoqua Membranes at its Groundwater Replenishment System

The Orange County (California) Water District (OCWD), recipient of this year’s prestigious Lee Kuan Yew Water Prize, continues to implement the expanded Evoqua MEMCOR® modular membrane system at its pioneering Groundwater Replenishment System (GWRS).

The current expansion increases microfiltration capacity by 44 MGD in addition to the original MEMCOR CS membrane modules installation of 87 MGD to eliminate all suspended solids, bacteria and other harmful contaminants from the feed stream to deliver high quality effluent to the reverse osmosis (RO) system.

Once treated by the microfiltration membranes, the RO system, and ultraviolet and hydrogen peroxide disinfection, secondary treated wastewater formerly discharged into the ocean is now used to replenish the local aquifer and act as a barrier to seawater intrusion to protect groundwater. The OCWD also realizes energy savings from the submerged membrane installation that configures the modules 14 feet below the raw water elevation to use the hydraulic gradient to drive feed water into the membranes without the need for electric pumps.

Currently capable of producing 70 MGD, enough for 600,000 residents, the GWRS produces this water supply using half the energy that would be needed to pump water from northern California - the equivalent energy to power 21,000 homes annually. The GWRS is located in Fountain Valley, California.

The OCWD selected the MEMCOR modular membranes based on multiple factors including a favorable lifecycle cost and environmental sustainability. The membrane expansion phase is expected to be complete by 2015.

“The MEMCOR membranes are a key component of the three-stage advanced purification process of microfiltration, RO and disinfection pioneered at GWRS that has since become the industry standard for potable water reuse,” said Mehul Patel, OCWD GWRS program manager.

“Evoqua is proud to partner with the OCWD and our manufacturing representative MISCOwater for the role MEMCOR membranes continue to play at one of the industry’s most innovative sites,” said Malcolm Kinnaird, vice president of Evoqua Municipal Business Unit. “We congratulate the OCWD for its worthy recognition as the recipient of this year's Lee Kuan Yew Water Prize.” The Lee Kuan Yew Water Prize will be presented June 2 during Singapore International Water Week (SIWW).

To learn more about MEMCOR membrane systems and other water treatment technologies for municipal, industrial and marine applications, visit Evoqua June 1-4 at SIWW exhibition booth B2–R18 and attend technical sessions presented by Evoqua experts. MEMCOR and other Evoqua products also will be featured at the American Water Works Association ACE Evoqua exhibition booth 2111 June 8-11 in Boston.

About Evoqua Water Technologies LLC

Evoqua Water Technologies is a leader in water and wastewater treatment products, systems and services for industrial, marine and municipal customers. Its comprehensive, cost-effective and reliable treatment systems and services reduce fresh water demand, ensure uninterrupted quantity and quality of water, and enable regulatory and environmental compliance. With a wide range of proven product brands and advanced water and wastewater treatment technologies, mobile and emergency water supply solutions and service contract options, Evoqua helps cities provide clean water and industrial plants to maintain productivity and profitability. For more information, visit www.evoqua.com.

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