Advanced oxidation provides an all-in-one solution that supports the complete eradication of Legionella in a water system, while also preventing its regrowth.
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.
In late 2005, the City of Newberg, Oregon, decided to upgrade their water treatment plant disinfection process from gas chlorine to on-site hypochlorite generation (OSHG) in an effort to simplify operations and increase operator safety. The plant produced an average of 2.5 million gallons per day (MGD), with a peak capacity of 5 MGD.
When the government of Baja California, Mexico, declared a water emergency for the region of San Quintín in 2014, leaders knew they needed to find a solution to ensure residents a reliable, safe water source.
By 2025 Salt Lake City expects to gain additional 100,000 residents, and the nearby city of Sandy expects to gain another 30,000.
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 the town of Johnstown, CO's, water treatment plant began operating its circular clarifier systems at maximum capacity to meet summer peak demand rates, consultants recommeded increasing plant capacity and using dissolved air flotation technology for their clarification process.
The financial cost to maintain their ozone equipment, and increasing scarcity of replacement parts for their ozone generator, motivated a utility in Springfield, MO, to upgrade their ozone system. Read the full case study to learn how the plant assessed the energy cost of a sidestream ozone injection system compared to that of a turbine mixing design and showed that the Mazzei retrofit design reduced the energy cost of ozone contacting by an average of 69.2% under all plant flow conditions.
When the City of Midlothian, Texas, was ready to expand their water treatment plant to accommodate a growing population, they carefully considered and investigated their water disinfection options.
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.
In one of Pennsylvania’s three original counties, water has played an integral – even historic – role in the region’s development.
Transporting pure salt - the raw material needed to generate sodium hypochlorite onsite – is more cost effective, stable, and safer, than transporting and storing bulk sodium hypochlorite, or gaseous/liquid chlorine cylinders from local chemical suppliers. The conversion to on-site hypochlorite generation can be achieved by adhering to these design guidelines.
Biofilm has adverse effects on all types of instruments, sensors, and equipment used in power plants, food and beverage production plants, desalination facilities, paper mills, and marine environments. This includes growth on pipelines, tanks, heat exchangers, reverse osmosis (RO) membranes, and other equipment. Biofilms can cause reduction of heat transfer, increased pressure drop and corrosion of metallic surfaces, and many forms of contamination.
To ensure treated water complied with the most stringent drinking water standards, including the Environmental Protection Agency (EPA) Stage 2 Disinfectants and Disinfection Byproducts Rule (State 2 DBPR), the City of Cambridge, MA, WTP decided to implement a robust multibarrier treatment solution.
With LuminUltra Cloud’s Data Management and Decision Support Platform you’ll be in control of your next decision - with access to ATP and other water quality data.
UAT™ Pure Pro seawater desalination membrane filtration systems from De Nora Water Technologies are ideal for offshore oil and gas applications. The standard output capacities range from 2,000 GPD to 26,000 GPD (7,570 LPD to 98,410 LPD) and effectively produce fresh treated potable water, free of particulate matter or contaminants from a seawater source. Higher output capacities and custom configurations are available on a project to project basis.
WEDECO TAK Series Open Channel Disinfection System for wastewater applications.
Pilot tests conducted at numerous facilities demonstrate that Loprest treatment processes successfully reduce iron, manganese, arsenic, nitrate, and many other select contaminants in drinking water to well below the Maximum Contaminant Level (MCL). Loprest can provide self-contained portable, free-standing pilot units or mobile, trailer-mounted units, depending on specific testing needs at each site. Services include unit delivery, setup, and operation. Upon completion of the pilot study, Loprest will prepare a Pilot Study Report and a detailed cost proposal for a full-scale system.
Ultraviolet (UV) irradiation is used for multifunctional purposes. UV is most commonly used as an environmentally friendly alternative to chemical disinfection. It’s one of the most effective methods for inactivating harmful pathogens such as Listeria, E.coli, Giardia and chlorine tolerant pathogens like Cryptosporidium. UV is also used for removal of organic and inorganic contaminants, including chlorine, ozone and Total Organic Carbon (TOC). UV used in conjunction with an Advanced Oxidation Process (AOP) will remove Compounds of Emerging Concerns (CEC's), Synthetic Organics (SO's), Endocrine Disruptor Compounds (EDC's) and Personal and Pharmaceutical Care Products (PPCP's), as well as various taste and odor compounds from water.
De Nora Water Technologies offers the ClorTec® On-site Hypochlorite Generating Systems, that easily produce 0.8% sodium hypochlorite by combining three common consumables: salt, water and electricity, to provide a powerful disinfection method for any application; food and beverage, potable water, wastewater, odor and corrosion control, cooling towers, oxidation and swimming pool disinfection.
Rick VanSant, President and CEO of UV Pure Technologies, explains some of the key trends currently shaping the water and wastewater market, including non-chemical disinfection, remote management, and urbanization.
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.
There are many places around the country where water shortage is a big issue. Water is the most precious resource we have, and in light of the shortage, people have started trying to investigate creative ways of ‘what’s my next water resource,’ Chris Milligan, vice president, director of engineering with BlueInGreen, told Water Online Radio in an interview.
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.
Peracetic acid (PAA)-based disinfection is growing in the US, both as a standalone disinfection method and in conjunction with other applications such as UV. Water Online Radio sat down with John Maziuk, Technical Development Manager with Solvay Chemicals to understand why.
Calcium hypochlorite is one method of disinfecting water and wastewater. In this Water Online Radio interview, Lou Finelli, Municipal Key Account Sales Manager for Lonza, compares calcium hypochlorite with other disinfectants such as chlorine gas, sodium hypochlorite and UV.
The PRO3MIX bromate control system is an intelligent ozone-based advanced oxidation process (AOP) introduction and reaction system enabling ozone treatment in a compact and intelligent design to mitigate bromate formation even in cases of high level bromide in source water. This short animated overview walks the reader through the various disinfection points of the process.
Jen Muller, VP of Marketing for Trojan Technologies, provides an update on two key TrojanUV technologies, the TrojanUVFlex and TrojanUVSigna. The former is designed for potable water reuse applications, including direct potable reuse (DPR), while the latter is ideal for wastewater disinfection as a replacement for chemical disinfectants. Muller shares the features and benefits of both products, and also discusses the TrojanUVSigna's installation at two of North America's largest wastewater treatment plants.
The newest family in the SUEZ ozone range, the ozonia® M includes all the latest developments from the ozonia® innovation labs. Ozonia® IGS+ dielectric technology provides even lower energy consumption and increased ozone production capacity up to 25 kg/h resulting in a lower cost per kg of ozone. The new ozonia® smartO3™ automation platform adds a suite of advanced features designed to optimize system performance and reduce operation costs. Finally, an innovative design provides improved resistance to environmental conditions in a more compact footprint.
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.
3M 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
Trojan Technologies 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.
