DRINKING WATER DISINFECTION
CASE STUDIES AND WHITE PAPERS
Constructed in 1997, the District of Chetwynd Water Treatment Plant (British Columbia, Canada) treats nearly 2,500 cubic meters of water per day using gas chlorination as its primary form of drinking water disinfection
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Case Study: Newport News Uses Emerson Ozone Instrumentation For Safe, Effective DisinfectionMaintaining the quality of the water supply is the top priority for municipal drinking water treatment plants across the country. Water plants use several treatment processes to ensure water quality and safety, and these treatment steps include disinfection. Traditionally, chlorine is used in both primary and secondary disinfection treatments and has been used since 1908. Some water plants are moving to ozone for primary disinfection. One water utility that is taking this direction is Newport News Waterworks.
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Performance Of A Conventional Surface Water Plant Using Mixed-Oxidants For Microflocculation And Final DisinfectionThe surface water source is from snow-melt and summer thunderstorm run-off from the mountains. This water is detained in McClure Reservoir (7876 ft elevation) and Nichols Reservoir (7483 ft elevation) upstream from the CRWTP, a conventional plant built in 1974 with a design capacity of 8 MGD. Because the City has limited surface water rights, and due to decreased demand, the treatment plant usually shuts down for 60 to 90 days during winter. The reservoirs thaw in spring and turn over in autumn, and during the summer rainy season, raw water turbidities may exceed 5 NTU. By MIOX Corporation
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City Solves Reliability And Maintenance Problems For WTP Hypo FeedsA municipal water quality manager reports replacement of sodium hypochlorite (hypo) vacuum feeder units with a more advanced type at one water treatment plant (WTP) has helped allow for continued reliability for chlorination.
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Replacement Of Gas Chlorination System: City Takes Advantage Of Special NaOCl Dosing UnitOperations management for a municipal direct water filtration plant reports achievement of a reliable and cost-effective change in chlorination systems that has continued to provide for effective disinfection, while better meeting safety and efficiency criteria. By Cliff Lebowitz
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Removal Of Disinfection Byproducts From Ohio River Water SourcesThe major cause of water pollution in the Ohio River is attributed to non-point source pollution from urban runoff, agricultural activities, and abandoned mines.
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MIOX Achieves Increased Efficacy Against Biofilm And Legionella Vs. Common Biocides
Comparative disinfection studies using 3 oxidizing biocides and 3 commonly used non-oxidizing biocides against Legionella pneumophilia.
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Water Plant Applies Colorimetric Chlorine Analyzer To Accurately Measure Proper ChloraminationThe North Shore Water Commission located in Glendale Wisconsin is a conventional water treatment facility that receives its influent from Lake Michigan. At the intake, chemical treatment is applied for mussel control and the water is pumped to the treatment plant 1 mile away. By Kevin Forsman
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Rainwater For Reuse As Drinking WaterWhen McMaster University in Hamilton, Ontario built their new Engineering Technology Building, they used the latest state-of-the-art technology not only to achieve LEED Gold certification, but also to create a living laboratory to train students on the building systems of the future.
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On-Site Chlorine Generation Replaces Conventional Chlorine Gas Feed System In Scottsdale AZThe city of Scottsdale, Arizona, a community of more than 200,000 residents was historically totally dependent on groundwater resources. By the mid 1980’s, the city began putting together a multi-faceted water resource program to provide the community with a long-term sustainable water supply.
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Disinfection Performance Testing Of High-Efficiency Ultraviolet Water Treatment ChamberThis is the second in a series of three white papers describing the design and performance of the NeoTech Aqua ReFlex™ treatment chamber. The first describes in detail the theoretical basis for the very high efficiency demonstrated by the chamber. The third paper describes how this chamber design leads to some highly desirable operational advantages beyond just energy ad cost reduction. By J. R. Cooper, Ph. D. and Gwynne Cavender, NeoTech Aqua Solutions, Inc.
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Water Utility Turns To State-Of-The-Art UV Technology To Help Address DroughtThe 2013 year was the driest in recorded history with many areas of the San Joaquin Valley reporting groundwater levels more than 100 feet below previous historical lows.
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A Rosemount Chlorine Analyzer Proves Just The Job For Seawater Duty At Dow's Terneuzen SiteThe Dow Benelux site in Terneuzen, the Netherlands, uses seawater for process cooling. Environmental regulations require careful control of the concentration of chlorine added to control microbial fouling. The existing chlorine measurement system had become outdated, so after stringent tests Dow decided to replace it with a Rosemount Analytical Model TCL analyzer from Emerson Process Management. By Emerson Process Management, Rosemount Analytical
Five decades ago, ion exchange using charged resins was one of two processes used in the water industry for water treatment.
DRINKING WATER DISINFECTION PRODUCTS
WEDECO TAK Smart™ UV System by Xylem
Like its big brother TAK 55, the ‘Smart’ system features the same UV lamp configuration and set of common equipment options.
TrojanUVPhox – Environmental Contaminant Treatment System
The TrojanUVPhox™ was designed to maximize efficiency - using 50%-90% less energy than other similarly sized UV reactors. Through the extensive use of computational fluid dynamics models and other computer simulation tools, it has been optically and hydraulically optimized to provide extremely efficient and cost-effective UV treatment. Its unique design allows for the use of multiple reactors in series.
TrojanUVTorrent – Drinking Water Disinfection System
Reducing maintenance requirements and costs while incorporating the most efficient technologies available, the TrojanUVTorrent™ leads the way for large-scale drinking water disinfection.
Sentinel® 12
TrojanUVSwiftECT – Environmental Contaminant Treatment System
The TrojanUVSwift™ECT is a hydraulically optimized, polychromatic lamp-based UV reactor for use in the treatment of environmental contaminants. It is suitable for removing contaminants from large flow rates within a compact footprint.
Municipal Drinking Water
Through advanced technologies in carbon adsorption, ultraviolet light disinfection, and ion exchange separation, Calgon Carbon provides a wide ranges of solutions to both long-standing and emerging challenges in the purification of municipal drinking water
DRINKING WATER DISINFECTION PODCASTS
UV Disinfection With LEDs
UV LEDs offer the chemical free disinfection of traditional UV while avoiding mercury lamps. In certain applications where customers are concerned about the potential hazards of mercury contamination in the water from a broken lamp, UV LEDs are interesting because they don’t contain any mercury content at all.
Upcoming Tech: Alternatives To Coal-Based Activated Carbon, Magnetite Ballasted, And More
In this Water Online interview, Paul Rice of Evoqua talks about the company’s variety of technologies which span across a wide range of water treatment solutions. One highlight is Evoqua’s AquaCarb CX, a coconut shell-based activated carbon that offers an alternative to coal-based activated carbon for removing disinfection byproducts, tastes, and odors.
Advanced Water Treatment Solutions To Solve The Modern Treatment Puzzle
Advanced treatment solutions continue to evolve as 1,4-Dioxin, N-Nitrosodimethylamine (NDMA) removal and Pharmaceuticals and Personal Care Products (PPCPs) appear on the regulatory horizon. Many times, advanced treatment requires combinations of different products in the treatment process.
Can’t Keep Up? Partner With A Manufacturers’ Rep To Sustain Growth
Rich Cavagnaro, President of AdEdge Water Technologies, and Tom Carmody, President of TC Tech LLC, share how their companies have partnered to successfully grow business in the advanced water treatment technology space.
The Value Of Wastewater: Closed Vessel UV Disinfection For Water Reuse
Jon McClean, President of Engineered Treatment Systems (ETS), explains how UV disinfection of wastewater provides an effective and sustainable solution to growing water shortages.
UV-LED Technology: The Latest In Disinfection
Dan Shaver, Business Development Manager at Aquionics, talks about the advantages of UV-LED technology for disinfection: low energy requirements, chemical-free and customizable design, and proficiency in solar or battery-powered applications.
DISINFECTION APPLICATION NOTES
- Importance Of Measuring UV Transmittance (UVT) For UV Disinfection
- Disinfection By-Products (DBP) Precursor Monitoring
- Measuring The Chlorine Content In The Emergency Chlorination Of Waterworks
- Application Note: Free Chlorine Measurement In Drinking Water Treatment
- Application Note: Ozone Measurement In Potable Water
- Removal of Chloramines with Activated Carbon
- Benefits Of UV Transmittance (UVT) Field Testing For Selling & Servicing UV Disinfection Systems
- Comparison of UV vs. Sodium Hypochlorite (Fact Sheet)
- Monitoring Chloramination Using The APA6000™ Ammonia/Monochloramine Analyzer
DRINKING WATER DISINFECTION VIDEOS
Building Water Confidence With UV Disinfection (Video)
TrojanUV is dedicated to providing the world with more efficient, environmentally-friendly water treatment solutions. This video shows how we’re helping municipalities deliver water confidence to their communities.
How To Install A UV Lamp
This video features a step-by-step demonstration of how to change out a used UV lamp and install a new one.
Ozone Trending As Reuse Solution
In many water-scarce parts of the country, today’s wastewater is tomorrow’s drinking water. With reuse increasing rapidly, effective disinfection is more important than ever before. One solution that many wastewater and water utilities are turning towards is ozone.
DRINKING WATER DISINFECTION NEWS
- Adedge Water Technologies Awarded Biottta Nitrate Removal Project For The City Of Delano, California
- Panasonic Unveils Speedy Clean Water Tech
- Invention Makes Urine Drinkable For Astronauts
- New Invention Purifies Water Using Sunlight And Nanoparticles
- HaloSource Scientist Named Fellow Of The National Academy Of Inventors
- Pinnacle Ozone Solutions, LLC. Announces Representative Partnership With Goble Sampson Associates, Inc.
- Biwater And NeoTech Aqua Solutions Leverage Latest Technologies To Combat California Drought At Padre Dam Municipal's
- Combating California’s Drought With Energy Efficient Technologies
- Xylem Wins 2014 Water Reuse Equipment Manufacturer Of The Year
- Evoqua Water Technologies Names Ronald C. Keating Chief Executive Officer
DRINKING WATER DISINFECTION SUPPLIERS
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Arch Chemicals, Inc., a Lonza companyLonza Microbial Control produces the new generation Constant Chlor® Plus calcium hypochlorite briquette feed systems that provide increased capacity and accuracy that exceeds its first generation system, plus new capabilities and features that further enhance operation, maintenance and safety.
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Calgon Carbon CorporationCalgon Carbon Corporation (NYSE:CCC), and its European operation Chemviron Carbon, is a global manufacturer and supplier of granular activated carbon, innovative treatment systems, value added technologies and services for optimizing production processes and safely purifying the environment
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JCS Industries Inc.JCS Industries, Inc. was founded in 2002 as a product development company charged with developing an alternative to the current vacuum feed liquid doser technology for a worldwide manufacturer of water and waste treatment equipment. After one year of design and two years of beta testing, JCS developed the Model 4100 Automatic Vacuum Liquid Feeder.
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MembranaLiqui-Cel® Membrane Contactors are used for degassing liquids. They are most commonly used for O2 removal from water and CO2 removal from water, but they are also capable of controlling a variety of other dissolved gasses as well, such as Nitrogen.
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MIOX CorporationWith a history of scientific innovation, MIOX Corporation began manufacturing on-site generators in 1994. Now with more than 1,700 installations in hundreds of U.S. communities and over 30 countries, MIOX is employed in many markets and applications including potable water, wastewater and reuse, commercial swimming pools, on board military and cruise ships, cooling towers, the beverage industry, oil and gas water treatment, and other commercial and industrial applications.
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PEPCON Systems PEPCON Systems (PEPCON) designs, manufactures and services equipment that utilizes a proven electrochemical process to safely and economically treat water and control odor in a variety of applications. These systems are marketed under the names ChlorMaster® and OdorMaster® and are available worldwide. -
Pinnacle OzonePinnacle Ozone is the manufacturer and world class integrator of rugged & compact, energy efficient industrial ozone systems. Our Pinnacle systems are used in a diverse array of industrial, commercial and municipal water application areas where treatment requires compact size, system mobility, high efficiency, wide operational pressure, and complex system integration solutions and services.
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Severn Trent ServicesSevern Trent Services is a leading supplier of water and wastewater treatment solutions. We provide our clients with some of the industry’s brightest minds, advanced technologies, and quality products to provide you with truly efficient, cost-effective solutions to your water and wastewater challenges
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TrojanUVTrojanUV specializes in the design, manufacture and sale of pressurized and open-channel ultraviolet (UV) disinfection systems for municipal wastewater, municipal drinking water and environmental contaminant treatment applications. We are proud to have the largest installed base of UV systems in the world and are committed to reducing water stress and maximizing this invaluable resource for current and future generations.
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WEDECO -- A Xylem BrandUsing processes that are both future-oriented and ecologically harmless, WEDECO products are committed to improving the foundations on which we live, on a global scale. As a company committed to healthcare, we consider it our duty to create health provisions, especially in the area of water disinfection. The broad outline of our business is to realize the best possible solution for mankind and the environment, and the most economic solution for our clients.
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UV Pure TechnologiesUV Pure® Technologies develops and manufactures technically advanced UV water purification systems. Since 1998, over 12,000 UV Pure systems have been installed in residential, commercial, industrial, public and municipal applications treating wastewater, reuse water, rainwater, and drinking water. The company’s Crossfire Technology is dramatically advantaged compared to conventional ultraviolet systems. UV Pure Systems are self-cleaning, and smart - with multiple sensors and on-board diagnostics. They are engineered to be fail-safe and virtually maintenance-free. Lamps are mounted in air surrounded by elliptical reflectors providing more effective deactivation of pathogens, incorporating easy lamp changes and visual quartz inspection. Remote monitoring is available.
ABOUT DRINKING WATER DISINFECTION
WATER DISINFECTION
Water disinfection is the process of removing unwanted chemicals, biological contaminants, suspended solids and gases from contaminated water. It is also the elimination, deactivation or killing of pathogenic microorganisms.
Methods used include physical processes such as filtration, sedimentation, and distillation, biological processes such as slow sand filters or activated sludge, chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.
Ozonators produce small quantities of ozone which is a strong oxidizing agent that kills pathogens over a short period of time.