Brominated Resins
Water Quality Products
July 2003
Ken Korslin, CWS-III, Pentair Water Treatment, Plymouth Products Division
In 1957 The Dow Chemical Corp. addressed the negatives of using bromine by creating a brominated ion exchange resin, which opened up the use of bromine in offshore water treatment applications.2 Today, polybromide resin is used in many offshore water treatment systems. The fact that bromine can be added to water that previously has been chlorinated makes polybromide resin a practical solution to accommodate the multiple sources of water in offshore applications.
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Desalination in America
Water Quality Products
November 2002
John B. Tonner, Water Consultants International
On average there are 50 to 75 significant desalination projects per year in the United States with an average capacity of approximately 1 million gallons per day. The majority of these projects utilize membrane processes such as nanofiltration (NF) or reverse osmosis (RO).
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Project Compares Brackish Water Desalination Technologies – Part 2
Water Engineering & Management
March 2002
Jim Passanisi, Janet Persechino and Todd K. Reynolds
Part one of this article appeared in the February issue and described how nanofiltration, reverse osmosis and electrodialysis reversal are being run side-by-side at the Brackish Water Demonstration Facility in California.
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Production of High Purity Water From Seawater
Water Quality Products
March 2002
Contributed by Ted Prato, Erik Schoepke, Lance Etchison, Tom O’Brien, Brian Hernon and Kit Perry, I
The Diablo Canyon Power Plant at Avila Beach in California utilizes seawater for both cooling water and makeup water for steam generation. Ionics, Inc., Watertown, Mass., designed and built and now operates a complete water treatment system serving the high-purity water needs of this power plant. Over the past eight years, the seawater treatment section has demonstrated excellent long-term performance as a result of strong design, consistent maintenance and qualified operators.
Seawater Desalination With Reverse Osmosis
Water Quality Products
March 2001
Jorg Menningmann, Waterlink Pure Water Division
Desalination technology has brought fresh water and hence industrial and commercial development to areas of the world that otherwise might have remained unproductive. Not only has development been enhanced by this technology but, more importantly, the health and welfare of many people have been improved by the supply of sanitary fresh water supplies.
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Membrane Filtration as an Alternative: Part 1
Water Engineering & Management
July 2000
Dr. Mohamed Lahlou
Once considered a viable technology only for desalination, membrane processes are increasingly employed for removal of bacteria and other microorganisms, particulate material and natural organic material that can impart color, tastes and odors to the water.
Desalination System Brings Water to Small Island Off Washington Coast
Water & Wastes Digest
February 2000
Off the coast of Washington, 32 families on Guemes Island were faced with an aging well that was drawing salt water into its system. Because groundwater is scarce on the island, residents had to rely on what little rain water soaks into the ground.
Desalination of Seawater and Brackish Water
Water Quality Products
January 2000
Wil Pergande and Barry Abolmaali
The increasingly broad range of requirements for water quality has motivated the water treatment industry to refine existing techniques, combine methods and explore new water purification technologies including desalination.
RO Desalinators & PLCs Provide Fresh Water to Remote Areas
Water Quality Products
June 1999
Gregory Nadsady
Reverse osmosis plants increasingly are being installed in outlying and remote areas. By providing water they can sustain life and/or provide irrigation to previously remote areas without readily available fresh water sources.
Membrane Filtration for Water and Wastewater
Water Quality Products
February 1999
Membrane filtration, widely used in chemical and biotechnology processes, is already established as a valuable means of filtering and cleaning wastewater and industrial process water.
Membrane Applications in Water Plants
Water Engineering & Management
August 1995
Ian Lisk
Faced with upgrading aging facilities, a Florida water utility decided to incorporate reverse osmosis.
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