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Taking the UV Plunge
Water Disinfection
February 2008
By Adam Donnellan & Jim Tanner
The use of UV treatment for aquatic waters
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Ozone + AOT
Water Quality Products
December 2007
By Bob Smith-McCollum
Ozone is becoming important in the field of advanced oxidation technology
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Deciding on UV Disinfection
Water Quality Products
October 2007
By Jon McClean
How UV was used for municipal water disinfection in Busselton, Western Australia
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Coming Together
Water Quality Products
October 2007
By Bob Smith-McCollum
Joint ozone and UV congress a success
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The New IOA-IUVA Congress
Water Quality Products
April 2007
By Brian Johnson
Two associations to co-host a technical conference presenting the benefits of ozone and UV technologies
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Validating UV Systems
Water Quality Products
February 2007
By Adam Donnellan
Understanding the rigorous DVGW protocol
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The Ozone/UV Combination
Water Quality Products
February 2007
By Ben Couch
UV and ozone provide innovative solution for water treatment problems
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UV - Moving into the Mainstream
Water Quality Products
October 2006
by Michael Sarchese
UV disinfection technology helps small community water systems meet stringent regulations
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Eliminating UV Output Loss
Water Quality Products
February 2006
By Sandro Pecile
Independent lab finds no loss of UV output in extremely low water and air temperatures with Hallett Crossfire Systems
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UV Disinfection Systems
Water Quality Products
November 2005
By Sandro Pecile
Understanding pressure drop when installing NSF/ANSI 55 Class A UV disinfection systems
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International Ultraviolet Association
Water Quality Products
October 2005
James Bolton
Water Quality Products invited James Bolton, executive director of the International Ultraviolet Association (IUVA), to give an overview of the IUVA and its membership benefits, as well as an update on current IUVA initiatives and industry regulations affecting ultraviolet technologies in the drinking water treatment market.
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Commercial Drinking Water Systems
Water Quality Products
July 2005
Adam Donnellan
When designing a commercial drinking water system using ultraviolet (UV) light for disinfection, you will need to know the local regulations, how to determine flow rates, what options may be required and whether you need pre-treatment.
When speaking about commercial establishments, I am referring to restaurants, daycare centers, schools, hospitals, parks and other entities that serve the public.
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UV Disinfection Part II
Water Quality Products
June 2005
Jeff Roseman
Part II of this article covers theoretical calculations of UV transmission rates based on various fluoropolymers and quartz. The article will evaluate bulb protection material costs and review different applications.
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Part I: UV Disinfection
Water Quality Products
May 2005
By Jeff Roseman
All the varying parameters must be analyzed in order to properly design a system that will work effectively on a multitude of water sources and applications, whether the source water is fresh or waste.
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UV Lamps
Water Quality Products
February 2005
By Michael Sarchese
There is a lot of talk and misinformation; however, it is an unavoidable fact that practically all ultraviolet (UV) lamps in use today are affected by the temperature of their immediate environment in regards to UV output. Minimizing the impact of this output vs. temperature effect depends as much on the overall UV system design as on the lamp itself. Understanding of this fundamental characteristic will help facilitate safe and trouble-free installation of UV equipment.
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UV Disinfection
Water Quality Products
October 2004
By Melissa Lubitz
It is only within the last year that drinking water guidelines, across both Canada and the United States, have incorporated UV into their standards as an acceptable means of disinfection
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Real-World Uses
Water Quality Products
June 2004
By Adam Donnellan, Sunlight Systems
Today, almost all industries have integrated UV into the water system infrastructure.
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A Practical Solution
Water Quality Products
March 2004
By Wendi Hope Bishop, WQP Staff
UV systems are most effective when combined with other treatment such as carbon filters, reverse osmosis systems or softeners.
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Taking Care of Beaver Fever
Water Quality Products
January 2004
Contributed by UV Pure Technologies
Problem: Giardia in the lake water (Buckskin Lake, Ontario) from beavers. An additional problem of bio-film clogging filters once system was installed. Solution: Hallett 13 Ultraviolet System with Crossfire Technology and filters. Results: Purified water from lake, improved taste and eliminated bio-film
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Changing the Face of Ultraviolet
Water Quality Products
December 2003
Jeff Roseman, Aqua Ion Plus+ Technologies
Coiled tubes that enable longer contact times and have excellent UV light transmission, versatility in application and a compact system de sign will revolutionize the UV light arena of water treatment . This method of UV light transfer in applications such as drinking water, icemakers, beverage dispensers, water coolers and aquaculture make the task of changing the tube that protects the UV bulb safer and less costly to the consumer.
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Ultraviolet Can Reduce Chloramine Effects
Water Quality Products
November 2003
Research has suggested that there is a link between exposure to chloramines in indoor swimming pools and a rise in childhood asthma. An ultraviolet chloramine-destruction system may help lower this risk.
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Pool & Spa Disinfection
Water Quality Products
May 2003
Jeff Roseman, CWS-I, Aqua Ion Plus+ Technologies
This article will address the use of ozone, copper ionization and proper injection of chlorine for a reduced approach to chemicals in providing a clean, clear, healthy pool and spa experience.
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E. Coli
Water Quality Products
May 2003
Danielle Duclos
This article provides a general overview of E. coli and drinking water as well as current and emerging monitoring and decontamination technologies.
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Nonchemical Alternatives to Cooling Tower Disinfection
Water Quality Products
April 2003
Jeff Roseman, CWS-I, Aqua Ion Plus+ Technologies
By explaining some tips and tricks, maybe more water treatment dealers can understand these technologies and use them in their arsenal of treatment methods. Filtration, ozonation, copper ionization and UV light may not be an option on some water supplies or applications, but their usefulness and alternatives to chemical dosing should be considered as an option.
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Taking the Mystery Out of UV Air Purification
Water Quality Products
February 2003
Cameron Tapp, ClearWater Tech LLC
The U.S. Environmental Protection Agency's (EPA's) studies of human exposure to air pollutants indicate that indoor levels of pollutants may be two to five times--and occasionally more than 100 times--higher than outdoor levels. For many dealers, it is a natural progression from improving a home's water quality to improving its air quality. Ultraviolet (UV) air purification is both a simple and cost-effective option for many consumers. Alone or combined with other technologies, UV can help address many of the concerns consumers have about their home's air quality.
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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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Ultraviolet Technology
Water Quality Products
December 2002
Jeff Roseman, Aqua Ion Plus+ Technologies
The use of quartz sleeves in ultraviolet (UV) light's treatment of water has been the medium of choice for many years. Now there seems to be an upheaval in the ranks, which brings into light compact system designs, longer contact times, less shadowing, cost savings and easier, safer change outs. Coiled fluoropolymer tubes are not new--they have been used in the Asian market for more than eight years. They may not be as time tested as their quartz counterpart, but the coiled tubes offer a very promising change in UV water treatment.
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Air Purification with Ultraviolet Light
Water Quality Products
December 2002
John Garrett, Biozone Scientific
While consumer demand has escalated for water purifying devices, it pales in comparison to what has happened in air purifying. The indoor air purification industry still is in its infancy, yet is recognized by the Environmental Protection Agency (EPA) to be a market valued well into the billions.
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Ultraviolet Disinfection of Drinking Water: A Growing Trend
Water Engineering & Management
November 2002
Richard G. Protasowicki, P.E.
The use of ultraviolet (UV) light for the treatment of drinking water is becoming more acceptable by both the public and regulatory agencies as an alternative disinfectant. Water suppliers that are developing new water treatment facilities or modifying existing ones now commonly investigate this technology to determine its applicability to their treatment processes.
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Situation Normal During a UV Disinfection Retrofit
Water Engineering & Management
November 2002
Brian M. Balchunas, P.E., and Lawrence H. Hentz, P.E., D.E.E.
At the Patuxent Water Reclamation Facility in Anne Arundel County, Md., a carefully considered construction sequence will keep the facility in operation during its retrofit from chlorine to UV disinfection. Construction started in June 2002 and is expected to be complete by summer 2003.
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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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Ultraviolet Dechlorination Technology
Water Quality Products
July 2002
Aquionics
At the Procter & Gamble manufacturing plant in Greensboro, N.C., an Aquionics ultraviolet (UV) dechlorination unit was installed before two banks of reverse osmosis (RO) membranes. Trials that ran soon after the UV system’s installation showed a dramatic reduction in the RO membrane wash frequency—down from an average of eight cleanings per month to only two per month.
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River Contaminates Town’s Water Supply When State Leaves It to Beavers
Water Engineering & Management
July 2002
Louis Manring
For nearly 70 years, the public water system in the Town of Sterling, Massachusetts operated without incident, delivering clean water to more than 2,000 homes. Because the water from the town’s well field was clean and free of contamination, there was no need for a permanent disinfection system. That all changed in September 1999 when a storm caused by Hurricane Floyd and the state’s increasing beaver population combined to cause bacterial contamination in the town’s water supply.
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Back to the Basics, Part 2
Water Quality Products
June 2002
Jeff Roseman, CWS-1, Aqua Ion Plus+ Technologies
How does everyone achieve effluent water that meets their needs and demands? Each situation is different, but a simplistic explanation of various technologies will be discussed in this article. Each of the following categories has had much written about them, but this article will be an overview of several methods in order to help you educate the general public so they can make an intelligent decision, purchase something of value and continually seek professional consultation.
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Back to the Basics, Part 1
Water Quality Products
May 2002
Jeff Roseman, CWS-1, Aqua Ion Plus+ Technologies
Basic water chemistry, terminology and applications can be very complicated and not seem so basic to individuals without a chemistry background. This series of articles will help shed light on the chemistry of water and the mysteries that it can contain, plus explain the technologies used to treat water so the purchaser can make an educated attempt to find the right solution for a particular application. There are no cut-and-dry formulas for water treatment and certainly no cure-all for every application or problem, but with an understanding of how water works and the technologies developed to treat water, a person can utilize his resources to come up with solutions for his particular need or application.
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Ultraviolet for Disinfection
Water Quality Products
April 2002
Tom Schaefer, Aquionics
Historically, industry has relied on hazardous chemicals such as chlorine and expensive processes such as pasteurization to rid its water supplies of pathogens. Currently, though, the use of ultraviolet (UV) light, the same as the portion of the electromagnetic spectrum of sunlight responsible for killing microorganisms, is providing a safe, reliable and highly effective method of getting the job done.
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New Test Technique Measures Light to Gauge Toxicity
Water & Wastes Digest
January 2002
Security measures do exist to safeguard our public water supply. Utilities routinely employ techniques such as chlorination, filtration, and ultraviolet treatment, to name a few. However, given the changes that have taken place in the world since September 11, 2001, the prospect for intentional contamination seems more possible than ever before. We want to have confidence that our existing security measures and analytics are adequate but with so many possibilities, how can we?
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Bioterrorism May Pose Threat to Water Supplies
Water Quality Products
December 2001
Wendi Hope King
If our water supplies actually do come under attack, the question remains: Is there any way for consumers to protect themselves? Unfortunately, it seems to be too early to tell, yet some companies are beginning to emerge with products that may be the answer.
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Water and Air UV Treatment
Water Quality Products
November 2001
By Bak Srikanth, Aquafine Corp., and David Witham, UltraViolet Devices, Inc.
UV is an accepted and rapidly growing technology for treating wastewater in the United States. In Europe, it commonly is used as a primary disinfectant in municipal drinking water systems. Other applications include food and beverage, pharmaceutical, semiconductor and power generation. This article will discuss three other commercially successful and growing applications.
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Reclaim Greenhouse Water
Water Quality Products
October 2001
Jeff Roseman, CWS, Aqua Ion Plus+ Technologies
Reclaiming water in the greenhouse industry will soon be something the government will be mandating the growers in the industry to do, as more wells are becoming contaminated from nitrates and phosphorus levels are becoming a concern for public health.
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Ultraviolet
Water Quality Products
July 2001
Adam Donnellan, Sunlight Systems
While UV disinfection is an effective way to deliver microbiologically safe water, understanding local regulations for its use can be more complicated than understanding how UV scrambles a microorganism’s DNA.
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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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Ultraviolet System Design
Water Quality Products
May 2001
Adam Donnellan
In the last issue, we reviewed ultraviolet (UV) disinfection as a suitable technology for treating biologically unsafe water supplies. In this article, we will focus on system design and understanding the many available options for residential and commercial applications.
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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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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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Georgia Golf Course Greens Up With Ultraviolet Disinfection
Water & Wastes Digest
October 1999
The process of reusing wastewater for sprinkling at the Sugar Hill Golf Course in Gwinnett County, Georgia, was time consuming, costly and problematic. An in-line ultraviolet disinfection unit installed at the treatment plant solved the problem.
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UV Disinfection 101
Water Quality Products
May 1999
by Edwin L. Roberts
An overview of UV disinfection and its applications.
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UV Disinfection Q&A
Water Quality Products
May 1999
by Robert Voitle
Some common UV-realted questions are answered by UV Expert Bob Voitle.
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Making the Third-Party Certification Choice
Water Quality Products
July 1997
by Nancy Culotta
Manufacturers' claims have become more sophisticated as the industry branches into two diverse segments: water conditioning and health effects claims. Within both segments, opinions have developed that claims made by manufacturers should be truthful and not misleading--resulting in a need to have products independently tested to verify water treatment claims made and promoted in the field.
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Cryptosporidium and Giardia Inactivation Device
Water Quality Products
October 1996
G. Michael Furst, Jr.
A new water disinfection system has been developed to inactivate Cryptosporidium oocysts and Giardia cysts in drinking water. The technology, known as the CID, inactivates these pathogenic waterborne microorganisms using enhanced ultraviolet (UV) irradiation technology without filtrate disposal, chemical addition or related hazardous by-products.
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Drinking Water Treatment Unit Certification
Water Quality Products
April 1996
Nancy Culotta
You are familiar with the water quality problems in your area, but finding a line of equipment that you can have faith in, that is reliable and consistently performs as claimed, may not be as easy as it first appears
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Are You Putting Your Customers at Risk?
Water Quality Products
February 1996
Steven L. Richards
Being knowledgable about various technologies as well as honest and thorough when assessing and/or installing systems will benefit you in the long run
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