Siemens to Provide 30mgd Membrane Treatment System Expansion for Scottsdale, Ariz.
Siemens Water Technologies has been awarded an $8.45 million contract by Archer Western Contractors to expand the Scottsdale Water Campus Central Arizona Project (CAP) drinking water treatment plant. Siemens will supply a 30mgd system that uses the latest Memcor CP membrane technology. The project is scheduled for completion in early 2009.
The Scottsdale Water Campus presently consists of a 12mgd water reclamation plant and a 50mgd drinking water treatment plant. The reclamation plant uses a Memcor PP (polypropylene) membrane system, installed in the late 1990’s, as pretreatment to reverse osmosis for treating wastewater that is then used for both aquifer recharge and irrigation. The drinking water treatment plant has been using media clarification to treat surface water from a canal. This plant needed to be expanded because of increased demand for drinking water in the North Scottsdale area. Today, the city of Scottsdale has a population of 240,000. In the last 10 years, the population has grown by about 35 percent.
For the drinking water treatment plant expansion, the Scottsdale Water Campus considered several different membrane technologies. After a successful 100-day pilot test was conducted at the site, the City of Scottsdale chose the Memcor CP system for its effluent quality, lower installed cost and ease of expandability.
The system expansion at the Scottsdale Water Campus will initially consist of seven Memcor CP units, each containing 324 modules, with the building designed to accommodate a total of ten units, bringing the total design capacity of the expansion to 45mgd.
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