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Troy Walker Named Membrane Technology Leader

(PHOENIX, AZ – March 26, 2013) – Hazen and Sawyer has named Troy Walker as Western Region Drinking Water Practice Leader/Membrane Technology Leader.

Walker, who has nearly 20 years of water treatment experience, has extensive expertise in the field of membrane water treatment applications, particularly microfiltration and reverse osmosis in recycling and seawater desalination applications. He conducted process design and commissioning during the early adoption stage of microfiltration technology to the drinking water, wastewater, and reuse markets across Australia, South East Asia, and the United States.

Walker has substantial design and commissioning experience of a number of leading membrane reuse projects, including the Newater scheme in Singapore, and has done groundbreaking work in membrane system validation studies and studies on the impact of industrial fouling chemicals on membrane performance.

Walker provided technical input to the design and construction of the Western Corridor Recycled Water Scheme, a landmark water recycling scheme built in Brisbane, Australia to mitigate severe drought conditions. This project incorporated high-level membrane water treatment including microfiltration, reverse osmosis, and advanced oxidation processes. Walker also played a key role in the regulatory approval process for this project, achieving ISO 22000 accreditation (Food Safety) and employing the HACCP (Hazard and Critical Control Point) system, a first for membrane water recycling applications.

His prior experience also includes process design for microfiltration technology projects throughout the western region of the United States, including California, Arizona, South Dakota, Texas, Utah, and Colorado.

“Constrained global water resources will make reuse a viable and necessary option for more municipalities to add to their supply strategy. I’m excited at this opportunity to apply my membrane expertise to the challenges of Hazen and Sawyer’s clients in the western United States and around the world,” said Walker.

Walker, a native of Australia, has a B.E. in Chemical Engineering from the University of New South Wales. He will be based in Hazen and Sawyer’s new Phoenix, AZ office.

Since our founding in 1951, Hazen and Sawyer has focused on two things: providing safe drinking water and controlling water pollution. Our range of services encompasses the planning, design, and construction management of water and wastewater-related projects – from clean water treatment, storage, and distribution to wastewater and stormwater collection, treatment, and reuse.

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