The design team for the intermediate ozone system at Buckingham Water Treatment Plant, Quebec, had limited space available for ozone contacting for the plant’s 1.3 – 7.4 MGD flow, so a standard fine bubble diffusion basin for ozone disinfection was not an option.
Birmingham Water Works Board (BWWB), Birmingham, Alabama has consistently achieved the rating of the number five water system in the United States for water quality. BWWB’s potable water distribution system (WDS) serves 600,000 people with a daily average use of 100 million gallons (378 million liters) of water, received from nearby lakes and rivers. The system includes 51 water storage tanks, nearly 4,000 miles (6,437 km) of pipe, over 13,000 fire hydrants and over 200,000 service connections.
Hendersonville Utility District (HUD) serves one of the most populous suburbs of Nashville, Tennessee.
For Robert Stout, general manager of Mid-Arkansas Utilities (MAU), the primary water provider for a three-county rural area spanning 2,220 square miles, the reason to switch to a dry calcium hypochlorite feeding system was simple, “using chlorine gas was not only dangerous for us, it was a big hassle and time-consuming.”
With diminished rainfall, a depleted aquifer basin, near-empty recharge ponds, and an earthquake-vulnerable aqueduct system, the Santa Clara Valley Water District (SCVWD) in San Jose, CA, required additional water supplies to maintain regional economic vitality for its growing community.
The Franklin Water Treatment Plant, near the Utah/Idaho state border, serves approximately 600 residents. Traditionally, water was drawn from springs and chlorinated.
The public works director responsible for a southwestern U.S. city’s drinking water supply reports multiple benefits from replacement of a problematic peristaltic pump system with a special liquid vacuum feeder system for bleach, liquid ammonium sulfate (LAS), and polyphosphate feeds at one of its well sites.
The 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
Water is disinfected before it enters the distribution system to ensure that dangerous microbial contaminants are killed.
In many countries we take for granted the availability and reliability of safe drinking water. A recent trip outside of the US reminded me of this fact when I saw notices in the hotel rooms stating the drinking water met specific standards and was safe to drink however, my friends from the country emphatically warned me to not drink the water.
In April 2013, City Utilities started up three Microclor Model MC‐1500 skid systems, each rated at 1,500 pounds per day of free available chlorine.
In 2005, in response to changes to the Canadian Drinking Water Quality guidelines, the Greater Vancouver Water District Board approved a proposal to upgrade the Coquitlam WTP with UV disinfection technology to act as the primary means of disinfection.
With 100 years of service history, Austin Water has seen enormous change in its 540 square miles of service area. Planning for the next 100 years has city and utility planners considering a diversity of sources, system resilience, and sustainability while being mindful of conservation goals. In the city’s newest water treatment plant, WTP4, Austin Water was able to combine those planning elements into a state‐of‐the‐art treatment plant. The plant, which is located on Lake Travis, is capable of treating 50 million gallons a day (MGD) with the ability to expand to 300 MGD.
A combination of growing demand, aging infrastructure and regulatory requirements acted as drivers for a new ozone system at the Miramar Water Treatment Plant in San Diego, CA.
De Nora Water Technologies has developed a comprehensive preventative inspection and maintenance contract program for our ClorTec® on-site sodium hypochlorite generation system.
De Nora Water Technologies’ SANILEC® 6 system generates sodium hypochlorite wherever and whenever disinfection is required. These lightweight, extremely portable systems are designed for use in rural or isolated locations where water purification, waste treatment or surface disinfection is required. SANILEC 6 systems are ideal for use in areas where chemical storage creates a risk or in areas where other disinfectant chemicals are in short supply.
The Leopold Trough-Guard media baffle is a stainless steel assembly that is fastened onto both sides of wash-water troughs to help prevent significant media loss during concurrent air/water filter backwash.
The "Ceramic Membrane Filtration System" is a reliable technology to produce clean water by removing the turbidity, bacteria, and cryptosporidium and other protozoa contained in raw water sources such as surface water and ground water. Using a unique ceramic membrane as a filter, this system is a low cost and long life filtration system. Therefore it can enable a water supply system to meet recent demands for safe and tasty water.
The NeoTech D438™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.
Xylem offers long disinfection experience and a broad portfolio of UV solutions specially for corrosive media like saltwater.
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.
Over the past two years, no groundwater issue has perhaps received as much community focus and attention as polyfluoroalkyl and perfluoroalkyl substances like PFOA and PFOS, often referred to as perflourinated compounds (PFCs). The U.S. EPA issued a health advisory, limiting the amount of these compounds to 70 parts/trillion which kicked off a nationwide evaluation of local water sources.
Daryl Weatherup, Director of Marketing for Evoqua’s Wallace & Tiernan brand, recently sat down with Water Online Radio to discuss disinfection management, residuals, dosing, disinfection byproducts (DBPs), chlorination and the latest technological advancements being announced at ACE16, including Evoqua’s acquisition of UV disinfection provider Neptune Benson.
If you’re still unfamiliar with the name De Nora, it’s time to get acquainted. Traditionally a supplier of plates for electrolytic industries, the company purchased Severn Trent’s equipment business in 2015 and is investing in its core business of disinfection and filtration.
John Deogracias, a Commercial Leader with the Parkson Corporation, sat down with Water Online Radio at ACE15 to discuss the MaximOS product line, which uses a patented, award-winning technology of on-site generation.
The facilities run by the University of Iowa Hospitals & Clinics have strict standards for water quality, as staff must protect the very sensitive equipment and patients under their care. Safeguarding against such threats as Legionella, there is no room for treatment system downtime. As maintenance issues with the network's existing water treatment systems became ever-increasing, a new technology was sought.
Following the acquisition of Severn Trent Services’ Water Purification Group, Water Online caught up with John Dyson, Commercialization Manager for the newly-branded De Nora Water Technologies, to understand what the change means for the water and wastewater industry. Dyson discusses how the new organization is enhancing the company’s product lines including the newly redesigned ClorTec on-site sodium hypochlorite generation system.
Under the big red umbrella, Jennifer Muller of TrojanUV discusses the company’s new solo lamp technology and the TrojanUV Torrent, a large-scale drinking water disinfection system being introduced at the show.
There are four stages in the Trident HS package treatment system, which provides multi-barrier protection for difficult-to-treat surface water, groundwater, industrial process water, and tertiary wastewater.
Lonza 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.
Calgon 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
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.
Liqui-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.
With 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.
Pinnacle 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.
De Nora Water Technologies 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
TrojanUV 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.
Using 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.
UV 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.
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.
