Ion Exchange Resins and Processes for Industrial Water Treatment   Water Quality Products July 2003   Wayne E. Bernahl, W. Bernahl Enterprises, Ltd.
Let's take a closer look at the technology and operation of ion exchange resins and processes used today in industrial water treatment systems.

Arsenic Treatment Options for the Southwest   Water Quality Products February 2003   Arizona Water Quality Association
While high concentrations of arsenic are found mostly in the Western region of the United States, parts of the Midwest and New England show levels of arsenic that exceed the newly approved U.S. Environmental Protection Agency (EPA) standard of 10 parts per billion (ppb). Individuals not willing to wait for their water system's compliance with the arsenic standard currently are looking for treatment systems to use in their homes. POU and even point-of-entry (POE) treatment systems are an attractive solution for these individuals. The process should begin with a basic understanding of arsenic contamination and the element's chemistry, a complete water quality analysis of the application-specific water and the knowledge of available technologies.
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Controlling Mechanisms of Contaminant Ion Leakage in Condensate Polishing Systems   Water Quality Products September 2001   Stephen W. Najmy, The Dow Chemical Co.
Extracting the maximum benefit from condensate polishing systems continues to be a top priority among many electric utility plants. With cost reduction pressures and increasing water quality standards, owners and operators continue to evaluate the resin handling procedures that affect corrosion product transport and contaminant ion impurity levels.
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Oxidizing Arsenic III to Arsenic V for Better Removal   Water Quality Products March 2001   Dr. Dennis Clifford and Ganesh Ghurye, University of Houston
On June 22, 2000, the U.S. Environmental Protection Agency (EPA) proposed lowering the maximum contaminant level (MCL) for arsenic from 50 down to 5 micrograms/L (Federal Register, 2000).
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Nuclear Power Plants Crosslinked Resin Ion Exchange System Provdes the Right Reactor Water Chemistry   Water Quality Products July 2000   James Stahlbush and Stephen Najmy
In the nuclear power industry, finding an ion exchange system that provides the right feedwater and reactor water chemistry is a delicate balancing act. That?s why engineers at Niagara Mohawk?s Nine Mile Nuclear Power Station?Unit Two, a boiling water reactor with deep-bed condensate polishers in central New York, turned to The Dow Chemical Co. for help in meeting stringent industry guidelines for feedwater iron.

Continuous Electrodeionization: The Chemical-Free Way to Produce High-Purity Water   Water Quality Products April 1999   by Trude Witham
The cost of chemical regeneration and waste neutralization rises, industries search for alternatives.