Playing It Safe
Water & Wastes Digest
May 2008
By Beth Marcello
A theme park with pools and water rides uses automated controllers to monitor water quality
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The Deep Impact of Tanks
Water & Wastes Digest
January 2007
By Cliff Rothenstein
Protecting the nation’s source waters and revitalizing communities for the 21st century
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Evaluating Arsenic Removal Technology
Water & Wastes Digest
August 2005
By Tom Mills
In addition to capital and operating costs, an arsenic removal technology should be evaluated on a variety of performance criteria as well as the technology supplier’s experience in the arsenic removal market.
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In a League of its Own
Water & Wastes Digest
July 2005
07/05/05
The design and aesthetic features of the plant are what overcame any NIMBY objections,” Nespeca said.
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Wisconsin Shaping Water Treatment
Water & Wastes Digest
May 2005
By Tom Bunker, Mark White and Scott Lenhardt
Racine WTP opted for membranes because of their ability to provide an extra barrier against waterborne pathogens to the 110,000 people served by the plant.
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Reservoir Tank Is One of A Kind
Water & Wastes Digest
May 2005
By Judy Horning
This expansion project is part of a long-term citywide capital improvement program to improve the infrastructure and services that provide San Diegans with safe drinking water.
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Maneuvering More from Drive-by AMR
Water & Wastes Digest
February 2005
By Betsy Loeff
“As a result of our project, we’ve learned a lot about water meter automation issues,” Adkins said.
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An Asset Coming of Age
Water & Wastes Digest
February 2005
By John Hengesh
At a basic level, AMR technology enables accurate and timely meter reading with unprecedented efficiency.
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Automatic Water Accountability
Water & Wastes Digest
February 2005
By David A. Herchko
With compound annual growth at over 30% in units over the past five years and market penetration at just over 18%, the future for AMR systems in the water utility market looks very exciting
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AMR Results Speak Volumes
Water & Wastes Digest
January 2005
Buddy Morgan
Montgomery, Ala. became a field test site for the R900 RF MIU during its product development phase. This test provided confirmation that AMR would be a viable solution for the city.
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Quicker than Routine
Water & Wastes Digest
November 2004
By Mark Vandiver and Sandra Johnson
The Huntington (W.V.) Wastewater Treatment Plant is a conventional system along the Ohio River, which processes 12-14 mgd.
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Tennessee Titan
Water & Wastes Digest
February 2004
By J. Kernan Crotty
An overflowing sewer made Springfield an unpleasant and unhealthy place to live, and the city’s overflow prevention program was successful only on a limited basis. The city of Springfield has experienced multiple benefits from the Teletouch wireless telemetry systems.
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E-Learning for the Pump Industry:
Water & Wastes Digest
December 2003
Valarie A. Reid
Ever-changing task environments and vast technology options are requiring professionals to commit to ongoing training and development. Learning via the Internet offers a convenience and flexibility unmatched by other vehicles, allowing the user to train at home or on the job, day or night, at an individual’s own pace.
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The Perfect Complement
Water & Wastes Digest
November 2003
Robert P. Lee, Ph.D.
The current economic climate has forced many state and local governments to face budget cutbacks and service reductions. This situation often translates to a reduction in the replacement, repair, or upgrade of aging pipelines, tunnels, reservoirs, and dams. As a result, many water districts are turning to software technology for an efficient yet cost-effective way to protect the water supply.
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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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Zero Waste: A Look at the Future of Reverse Osmosis
Water Quality Products
March 2003
Josh Hanford, Watts Industries
Most reverse osmosis systems waste as much as 20 gallons just to produce one gallon of product water. The new technology called "ZeroWaste" eliminates this problem by returning the concentrate water from the reverse osmosis system back to the home's plumbing, resulting in 100 percent efficiency.
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Disinfection, Part 1: Developments in Ultraviolet Disinfection
Water Quality Products
January 2003
Bruce Laing, Trojan Technologies, Inc.
One of the fastest growing technologies in the water treatment industry is ultraviolet (UV) disinfection. UV disinfection adds no chemicals, and it does not produce byproducts. Additional benefits include easy installation, low maintenance, minimal space requirements and whole-house (point-of-entry) treatment.
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Legionella Solutions
Water Quality Products
September 2002
Bernard Banga, Freelance Writer, French Technology Press Office
Legionnaires' disease is considered so catastrophic that, in France, it must be reported to the medical authorities immediately. This practice has been in place since 1987. During the last decade, public health monitoring systems for this disease have been strengthened. Today, this hazard that arises from buildings has become an emerging public health problem in industrialized countries. The resulting respiratory infections are behind the recurrent epidemics emanating from hot water systems in buildings and air-conditioning cooling towers.
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Developments in Ozone Technology
Water Quality Products
July 2002
Rip G. Rice, Ph.D., RICE International Consulting Enterprises
Ozone technology developments have opened new applications for these established water treatment technologies. Driving these changes has been the identification of new, more disinfection-resistant microorganisms such as Giardia and Cryptosporidium cysts and governmental regulations designed to protect the public health from the hazards of ingestion of these microorganisms. Additionally, the desire to prevent or minimize the formation of halogenated disinfection byproducts formed during chlorination has stimulated new interest in the use of ozone. Combinations of ozone with hydrogen peroxide and/or ultraviolet (UV) radiation can destroy many contaminants present in ground water.
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The Practical Use of Ozone for the Well Water Application
Water Quality Products
July 2002
Roger Nathanson, Ozone Pure Water, Inc.
We?ll discuss the well ozone water treatment application. Each application is a potential business in itself, which means greater revenue and profit. All that is necessary from you is the motivation to boldly go where you have not gone before.
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Advanced Technology Brings the Power to Chlorine Dioxide
Water Quality Products
May 2002
Michael Cochran, Engelhard Corp
Chlorine dioxide is an extremely effective and powerful biocide that has been used for many years as a bleaching agent and slimicide in the pulp and paper industry, as a disinfectant in municipal water treatment and in many other industrial water treatment operations. However, significant capital and operating costs have limited the use of chlorine dioxide to large-scale applications. New technology now makes it practical to use the biocide in a wider range of water treatment applications.
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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.
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Metering Pump Technology
Water Quality Products
March 2002
By Steven Ebersohl, Pulsafeeder, Inc.
Since the introduction of the metering pump, chemical feed for disinfection has been a primary application. As we move into the 21st Century, it again is time to review how we introduce chemicals such as sodium hypochlorite into our water systems. While the goal remains the same, changes in pump technology have been created to provide more accurate and consistent results. This article will discuss current metering pump technologies, proper pump sizing, installation and future enhancements.
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Innovations in the Activated Carbon Industry
Water Quality Products
February 2002
Henry Nowicki, Barbara Sherman and Homer Yute
Like an international cookbook, the attendees of the Ninth Annual International Activated Carbon Conference (IACC) from around the world contributed to a recipe for a successful future for the activated carbon industry. Speakers brought their new ideas and on-going practices together. This annual conference had guests from all over the United States, Canada, Australia, Sri Lanka, Indonesia, Mexico, South Africa and India. The conference connects buyers, sellers and users of activated carbon and related materials and services.
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Winning Websites
Water Quality Products
November 2001
By Walt Denny, Walt Denny, Inc.
If optimally designed, your website can be a powerful customer magnet or, if it is not, a sure-fire customer repellent.
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Can Technology Help You Sell More? Part 2
Water Quality Products
November 2001
By Carl Davidson
Last month, I discussed a few ideas on tossing your selling techniques into the new century by utilizing available technologies. This month lists a few more selling ideas that have proved themselves worthy of a salesman’s efforts.
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Ozone for Bottled Water
Water Quality Products
October 2001
Andrew Zaske and Aaron Edland, Osmonics, Inc.
The proliferation of bottled beverages worldwide and an increased awareness of consumer health issues have beverage suppliers rethinking how to keep their liquids safe for consumption.
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Commercial, Industrial Ultraviolet Systems
Water Quality Products
June 2001
Adam Donnellan
In past articles, we discussed the benefits of ultraviolet (UV) disinfection as well as the many available options. In this article, we will focus on the available technologies and provide an overview of how these technologies are being applied in commercial and industrial applications.
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Data Acquisition, Legacy Systems and Your Intranet
Water & Wastes Digest
February 2001
By Fred Noble
There are lots of parallels between the events of November 2000 and the events that take place in any factory or municipality that runs a process or monitors its effluent. The technology exists to achieve the much-talked-about six sigma (3.4 errors per million events) levels of measurement quality or process integrity. But antiquated legacy systems keep getting in the way. And, as is the case on the American political scene, it just is not that easy to replace those old methods of measuring things.
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Basic Essentials
Water Quality Products
January 2001
Adam Donnellan, Sunlight Systems
The benefits of ultraviolet (UV) light in destroying waterborne diseases are well established. This article (part one in a continuing series) will focus on explaining the basic terminology associated with the technology.
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Molecular Techniques: Detecting Human Enteric Viruses
Water Quality Products
May 2000
Paul S. Warden and Kristen S. Fallon
This article presents an overview of human enteric viruses, reviews traditional and modern molecular detection methods and discusses recent research comparing traditional and molecular techniques.
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SCADA Systems Enhance Reliability of Remote Installations
Water & Wastes Digest
May 2000
A total system replacement is an expensive proposition – especially when some elements still may be working well. The city of Rome, Georgia, faced this dilemma when they needed to upgrade an existing Supervisory Control and Data Acquisition (SCADA) system used in the municipality’s water treatment facilities.
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Pressure Switches Activate Alarms, Control Equipment
Water & Wastes Digest
April 2000
Pressure switches are used in process plants around the world for a wide variety of alarm, shutdown and control applications. Often they are the most cost effective way to protect operators, equipment or work-in-progress.
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Liquid Regeneration of Spent Activated Carbons
Water Quality Products
March 2000
Henry G. Nowicki
New liquid phase-based processes to regenerate spent AC have been conducted. Two liquid processes, competitive adsorbate displacement and supercritical fluid (SCF) regeneration, will be discussed.
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Improving the Quality of Deionizers
Water Quality Products
March 2000
Jim Sabzali and C.F. Chubb Michaud
Though both the cation and the anion resin are responsible for the quality of a deionization (DI) system effluent, it is the cation resin that is the big contributor to leakage.
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Little Rock Plant Serious About Oxygen Management
Water & Wastes Digest
October 1999
Clyde Frost
The Fourche Creek Treatment Plant in Little Rock, Arkansas, produces its own electricity. So the staff cannot afford to waste it. This 16 MGD plant runs two 800 horsepower generators powered by a combination of digester gas and purchased natural gas to supply all of their electrical needs.
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DI-Polar Water Conditioning: Today’s Technology
Water Quality Products
July 1999
Bill Herrera and Stephane Hersen
A savvy water treatment professional recognizes changes and reacts for reasons of market potential and, sometimes, just for basic survival. DI-Polar water conditioning is one such innovative response to the changes demanded both environmentally and economically, and not to be confused with magnets.
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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.
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Ozone Pilot Plant Design:Why Use Ozone?
Water Quality Products
January 1999
Gabe Ergler, CWS-III
In this article, some of the many reasons ozone would be chosen over other oxidants such as chlorine are discussed. If you have a reason to apply ozone as part of your water treatment project, you may be required to conduct a pilot study prior to installation of the equipment.
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