Arsenic treatment
Water Quality Products
December 2006
Greg Gilles
Community systems achieve arsenic removal well below new standard
The Total Package
Water Quality Products
May 2006
By Amy Osgood
POE arsenic removal program provides testing, support and residuals removal in addition to treatment system
More Value for the Customer
Water Quality Products
March 2006
By Matthew Sweetman
Decentralized treatment helps small communities comply with arsenic rule and prepare for future regulations
Point-of-Use Arsenic Treatment
Water Quality Products
February 2006
Shannon P. Murphy
Long-term cost benefits of the point-of-use program for communities to comply with the arsenic rule
New Arsenic MCL: The Dealer’s Perspective
Water Quality Products
January 2006
Compiled by Neda Simeonova
Water Quality Products asked Frank DeSilva, national sales manager for ResinTech, Inc. to share his thoughts on the potential market the new arsenic rule may create for POU/POE dealers.
Troubled Waters Ahead
Water Quality Products
October 2005
By Henry Nowicki and Barbara Sherman
As we near January 2006, there are more than 5,000 small water systems that are not compliant with the upcoming 10 ppb total arsenic rule. Iron oxide (hydroxide) based sorbents like granular ferric hydroxide (GFO) appear to be the best choice for removing total arsenic from small municipal drinking water systems, but preliminary studies show there may be disposal problems associated with arsenic spent sorbents from drinking water applications.
Arsenic Treatment
Water Quality Products
July 2005
Greg Gilles
In early 2004, AdEdge was pre-qualified and invited to participate in an arsenic pilot study of commercial adsorption-based treatment technologies with Damon S. Williams & Associates (DSWA). As an outcome of the successful piloting and preliminary work with the engineer, AdEdge was chosen by Centennial Contractors to perform full-scale arsenic treatment using its granular ferric oxide adsorption technology at the New River Elementary School site in New River, Ariz., 15 miles north of Phoenix.
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High Arsenic Levels
Water Quality Products
July 2004
By Rich Cavagnaro
Many of these homeowners were unaware that arsenic was present in their wells and only became aware because they were either selling or buying a home.
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'Out of the Box'
Water Quality Products
December 2003
Carla Fisher and Gregory C. Gilles, AdEdge Technologies
Emerging commercial technologies are replacing the "old standards" for small water system (SWS) applications. In contrast to large community systems, competitive economics, simple operation and low waste production will drive changes in technology and engineering. Some out-of-the-box thinking will be necessary in the shift to provide simpler, packaged or preengineered arsenic treatment systems.
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Research Racks Up Recognition Points for POU/POE
Water Quality Products
June 2003
Wendi Hope King
Some really important research going on right now, which is critical for the point-of-use/point-of-entry (POU/POE) industry in order for POU/POE treatment to become an accepted practice for small public water system compliance. It seems as though we are closer than ever to finding acceptance in this arena.
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NSF Conference Addresses Public Water System Compliance Using POU/POE
Water Quality Products
June 2003
In February, NSF International arranged for many experts to cover the issues and facets of point-of-use and point-of-entry (POU/POE), how they can be used for PWS compliance and other opportunities for the manufacturers and users. This article is intended to provide opinions and a broad conference overview.
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Arsenic Treatment
Water Quality Products
June 2003
Ley Hathcock, Ph.D., Rich Cavagnaro & Greg Gilles
A wide range of technologies, some new and some more traditional, is being marketed and applied for arsenic treatment. Each of these technologies has specific properties impacting its suitability for any particular scale of application. While rare, the ability of a single water treatment technology to perform effectively across many treatment platforms is not unique.
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Greensand Process Removes Iron, Manganese, Arsenic from Groundwater
Water & Wastes Digest
March 2003
Manganese greensand is a specially processed medium for iron, manganese, and hydrogen sulphide removal. This premium non-proprietary filter medium is processed from glauconitic greensand on which a shiny, hard finite thickness manganese oxide coating is formed and is firmly attached on every grain by a controlled process.
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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Arsenic Overview Series - Part 1
WaterInfoCenter
January-December 2003
Sherry Odom
Arsenic is a naturally occurring metal found in rocks and soil, which can be released into the environment through geological events such as volcanic activity and erosion. Other releases of arsenic into the environment occur through industrial processes such as production of paints, metals, soaps, dyes, drugs, semi-conductors and wood preservatives, as well as in mining and smelting.
Arsenic Overview Series - Part 2
WaterInfoCenter
January-December 2003
Sherry Odom
Consumers unwilling to drink arsenic contaminated water are demanding a more rapid implementation. Publicly owned utilities, however, will be held hostage from implementing a more rapid solution due to government approval cycles, annual budgets, required biding processes and slow implementation schedules. As a result, in-home treatment systems, which immediately can be installed, are a very popular treatment option for individual homeowners. Other advantages such as low implementation/operating costs and improved flexibility make the POU/POE approach option appealing.
Arsenic Overview Series - Part 3
WaterInfoCenter
January-December 2003
Sherry Odom
In addition to officially sponsored research projects being performed throughout the world (see Section V for more information on research), many universities, government organizations and industry professionals are active in providing solutions to this issue. The following papers have been presented on arsenic treatment, health effects or policy issues at various tradeshows and conferences throughout the United States.
Arsenic Overview Series - Part 5
WaterInfoCenter
January-December 2003
Sherry Odom
Research on arsenic can be broken down into three general areas -- health effects, treatment options and cost evaluations.There are more than 1,000 published research papers on health effects alone. This section provides an over-view of the most prominent research related to these areas which have impacted EPA’s decisions. There also are links to research organizations that can provide access to the specific projects conducted.
Arsenic Overview Series - Part 6
WaterInfoCenter
January-December 2003
Sherry Odom
What research is being done at University's throughout the US? Colleges and universities across the U.S. are continuing their efforts in educating the population on the subject of arsenic. Both public and private universities are contributing their time, money, and expertise in areas of arsenic research such as geochemistry, health effects, and treatment options. Research programs, such as the ones listed below, are just a glimpse of the ongoing studies for arsenic. Ongoing research is necessary in order to continue to develop efficient and cost-effective solutions for the far-reaching problem of arsenic contamination.
Arsenic Overview Series - Part 7
WaterInfoCenter
January-December 2003
Wes McGowan
These terms are pulled from "All About Water: An Illustrated Dictionary of Water Terminology" by Wes McGowan
Arsenic in Drinking Water - Part 4
Water Engineering & Management
June 2002
John T. O’Connor, EngD, P.E.
Editor’s Note: Part 1 of this series provided a timeline for the development of a drinking water standard for arsenic. It also summarized the political and public reactions to the U.S. EPA decision to delay and withdraw the arsenic rule.
Part 2 dealt with human exposure and advances in knowledge concerning human health effects of exposure to arsenic.
Part 3 summarized early data on the occurrence of arsenic in U.S. waters.
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Arsenic in Drinking Water - Part 3
Water Engineering & Management
May 2002
John T. O’Connor, EngD, P.E.
Only recently has a substantial amount of data become available on the concentrations of arsenic in United States drinking water supplies. Most of these data have been accumulated by the state regulatory agencies responsible for monitoring drinking waters. Since the arsenic standard has been 50 µg/L, some state agencies have recorded arsenic concentrations only in excess of that concentration. Others have been limited by the sensitivity of the analytical techniques and equipment used for the arsenic analysis. As a result, much of the available arsenic data are “below the limits of detection.
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Using Advanced Adsorptive Media for Arsenic Treatment
Water Engineering & Management
April 2002
Greg Gilles and Jennifer Mathis
On November 26, 2001, the new arsenic standard was signed into law—lowering the acceptable level for the contaminant from 50 parts per billion (ppb) to 10 ppb. Approximately 4,100 municipal water systems serving nearly 13 million people nationwide are affected by the law and are required to meet compliance by January 2006. According to the U.S. Environmental Protection Agency (EPA), 97 percent of these systems are small systems serving fewer than 10,000 people each. The economic impact on these small systems is likely to be large. However, there currently are options available to small municipalities that may be more affordable than central treatment.
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POU Technology Demonstrates Effectiveness
Water Quality Products
March 2002
By Jennifer Mathis, Apyron Technologies, Inc.
In March 2001, the U.S. Environmental Protection Agency (EPA) withdrew a proposal for a lower maximum contaminant level (MCL) for arsenic in drinking water that would bring the standard from 50 parts per billion (ppb) to 10 ppb. At that time, the EPA commissioned three studies to examine the benefits, costs and health effects associated with a lower standard for arsenic.
Arsenic in Drinking Water - Part 2
Water Engineering & Management
March 2002
John T. O’Connor, EngD, P.E.
On-going health effects studies and research reports (2001) appear to support the argument for lowering the current EPA drinking water standard for arsenic. Studies conducted by EPA, the University of North Carolina and the University of British Columbia have indicated that methylated metabolites of trivalent arsenic are genotoxic. In other words, they damage DNA in human cells.
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Arsenic in Drinking Water - Part 1
Water Engineering & Management
February 2002
John T. O’Connor, EngD, P.E.
The National Academy of Sciences, National Research Council (NAS-NRC) report was released on September 11, 2001. It concluded that the existing health effects data on arsenic essentially were sound. In addition, their review of three new epidemiological studies indicated that the health risks posed by arsenic in drinking water were greater than previously believed. As a result, in October, well before its self-imposed deadline, EPA rescinded its March implementation ban and endorsed the 10 µg/L arsenic MCL.
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Officials Recognize POU Industry
Water Quality Products
February 2002
Wendi Hope King
After the U.S. Environmental Protection Agency (EPA) finally announced the new maximum contaminant level (MCL) of 10 parts per billion (ppb) for arsenic, an estimated 4,000 community water systems are now left to take measures to lower their arsenic levels, which were previously at 50 ppb.
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Boost POE Sales by Leveraging the New Arsenic Standard
Water Quality Products
February 2002
Craig Winter, CWS-III, EnviroInvestigations &Remediation
Recent market research showed that more than 73 percent of consumers prefer to consult with a water treatment professional when dealing with arsenic. Combining this inclination with the preference for the POE approach, the treatment professional has a unique opportunity to generate significant new revenue from POE sales with minimal upfront effort.
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Arsenic Testing the Easy Way
Water Quality Products
December 2001
John Gary, Industrial Test Systems, Inc.
In the past, testing for arsenic in drinking water has been as difficult as removing it. A variety of test kits have appeared on the market deriving from the need for easier, cheaper and faster methods. These test kits rival both the accuracy and low detection ability of laboratory instrumentation.
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POU Options for Arsenic
Water Quality Products
November 2001
The topic of arsenic has received a lot of press coverage this year, ever since the Bush administration halted the EPA’s newly issued maximum contaminant level (MCL) of 10 parts per billion (ppb). Since then, the MCL was reinstated back to 50 ppb and further discussions and studies have continued. This article will discuss some of these updates.
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