CASE STUDIES AND WHITE PAPERS

Disinfection Byproducts: Treatment Options And Challenges For Public Water Suppliers

Regulated and emerging disinfection byproducts (DBPs) pose several challenges for water suppliers, but there is a variety of cost-effective cures.

  • UV Disinfection: An Ideal Solution For One Beverage Bottler
    UV Disinfection: An Ideal Solution For One Beverage Bottler

    A well known bottler of teas and sports drinks uses a dose-paced UV system from ETS to accommodate changes in flow and water quality when switching between water sources.

  • Multi-Barrier Disinfection Strategy - New York City (Case Study)
    Multi-Barrier Disinfection Strategy - New York City (Case Study)

    New York City is home to more than 8 million people, making it the most populous city in the United States. The majority of New York's drinking water is supplied by the Catskill/Delaware watershed, located approximately 100 miles outside the city. Historically, NYC has not filtered the water from this system, nor did they require any additional barriers to microbial contaminants due to the pristine nature of the watershed.

  • The Basics Of Disinfection
    The Basics Of Disinfection

    From utility water to wastewater, whether used in industrial processes or for drinking, disinfection plays a prominent role in providing safe and useable water. Water free from pathogens and other microorganisms ensures processes run efficiently and people are kept safe from disease. By Harland R Pond, Business Development Manager – Water Treatment

  • Veolia ACTIFLO Case Study: Somersworth, NH
    Veolia ACTIFLO Case Study: Somersworth, NH

    The City of Somersworth has a historical background dating back to the early 1900s when it became the first community to start using chlorine to disinfect it’s drinking water.

  • Generating Disinfectants From Water: Could In Situ Electrolytic Production Be The Future?
    Generating Disinfectants From Water: Could In Situ Electrolytic Production Be The Future?

    Chemical disinfection using strong oxidants involves the transportation, storage, and handling of unstable and/or aggressive and hazardous chemicals. The production of oxidants at the location where they are to be used has therefore been a preferred option, especially in small-scale or remote installations. On-site electrolysis of NaCl for the local production of chlorine or hypochlorite, or the production of ozone-enriched oxygen by silent discharge has been standard for years.  However, it is possible to take the idea of producing chemical disinfectants locally a step further and look at in situ techniques, i.e. at devices, which produce oxidants in and from the water to be treated. By Dr. Samuel Stucki, Scientific Consultant to Innovatec Gerätetechnik GmbH,Germany

  • An Alternative Mathematical Model For Oxygen Transfer Evaluation In Clean Water
    An Alternative Mathematical Model For Oxygen Transfer Evaluation In Clean Water

    Energy consumption from aeration system is a biggest part of the total energy cost in wastewater treatment plant and account for as much as 60% of the energy consumption for the activated sludge process. Therefore, it is very important to know how effective the aeration system and significant attention has been paid to development and upgrade of standard method for quantifying oxygen transfer efficiency of the aeration system. By Yanjun (John) He, PE, BCEE, Kruger Inc.

  • Replacement Of Gas Chlorination System: City Takes Advantage Of Special NaOCl Dosing Unit
    Replacement Of Gas Chlorination System: City Takes Advantage Of Special NaOCl Dosing Unit

    Operations 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

  • Safe Drinking Water With UV Disinfection (Case Study)
    Safe Drinking Water With UV Disinfection (Case Study)

    The source water in Cudahy, a city just south of Milwaukee, is susceptible to contamination and significantly impacted by agricultural and urban runoff. After a Cryptosporidium outbreak in the early 1990s, improved water quality was vital. A UV solution proved to be the best fit for protection against the contaminant within a restrictive space.

  • Guaynabo WTP In Puerto Rico Saves Thousands With UV 254 Monitoring Package
    Guaynabo WTP In Puerto Rico Saves Thousands With UV 254 Monitoring Package

    Dealing with fluctuating water sources is not an easy task for plant operators. Seasonal variation, heavy rain fall or accidental contamination events change the raw water quality, requiring immediate attention. This is a familiar scenario for Facility Manager, Nancy Ma. Cáceres Acosta at the Los Filtros Water Treatment Plant in Puerto Rico. She has been producing highquality water for 256,000 local residents, receiving surface water from the Guaynabo and Bayamon River

  • ClorTec Hickory Case Study
    ClorTec Hickory Case Study The use of gaseous chlorine at water treatment plants has, for many years, been an effective method of disinfection. It is still the most commonly used disinfectant in plants throughout the United States.
  • On-Site Chlorine Generation Replaces Conventional Chlorine Gas Feed System In Scottsdale AZ
    On-Site Chlorine Generation Replaces Conventional Chlorine Gas Feed System In Scottsdale AZ

    The 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.

  • City Solves Reliability And Maintenance Problems For WTP Hypo Feeds
    City Solves Reliability And Maintenance Problems For WTP Hypo Feeds

    A 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.

MEMCOR® Continuous Microfiltration System Maximizes Water Resources For The City Of Scottsdale, Arizona

The desert community of Scottsdale, Arizona had no natural surface water sources and a decreasing groundwater supply. Scottsdale had historically treated and disposed of its wastewater.

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DRINKING WATER DISINFECTION PRODUCTS

ETS-UV for Drinking Water Disinfection

ETS-UV for Drinking Water Disinfection

The ETS range of drinking water UV systems are modeled using CFD and FEA emulation tools and have been independently validated to demonstrate performance under a variety of operating conditions.

Hypochlorite Generator

Hypochlorite Generator

Production ranging from 1 gal/day - 1,550 gal/day (3.8 L/day – 5,867 L/day) and engineered for reliable, safe on-site chemical generation. 

Disinfection: TCL Total Chlorine Analyzer

Disinfection: TCL Total Chlorine Analyzer

Total chlorine measurement is essential in the control of chlorine in water before its return to the environment in a wide range of industrial applications including desalination. It also provides accurate reporting to the EPA about that control. To meet EPA requirements, the instrument must be reliable for long periods of time and monitor down to 500 ppb. The Rosemount Analytical Total Chlorine Measurement system from Emerson meets and exceeds all requirements while saving money through the use of low-cost reagents.

NeoTech D222™

NeoTech D222™

The NeoTech D222™ is specially designed to disinfect water and is an essential component in advanced oxidation processes.

<B>Drinking Water / Potable Water</b>

Drinking Water / Potable 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
MC4-150 Dry Calcium Hypochlorite Feeding System

MC4-150 Dry Calcium Hypochlorite Feeding System

The MC4-150 dry calcium hypochlorite feeding system prepares and automatically delivers a consistently accurate dose of liquid available chlorine for disinfection applications.
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DRINKING WATER DISINFECTION PODCASTS

Is UV Poised For Increased Adoption?

Is UV Poised For Increased Adoption?

Disinfection can be achieved through chlorine, membranes, ozonation, or UV (among others), but the latter may be best equipped to serve the changing water treatment market.

A True Lifesaver: Grundfos Provides Key Element For High-Quality Water

A True Lifesaver: Grundfos Provides Key Element For High-Quality Water

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.

The Value Of Wastewater: Closed Vessel UV Disinfection For Water Reuse

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

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.

Peristaltic Vs. Diaphragm Pumps

Peristaltic Vs. Diaphragm Pumps

Bill McDowell of Blue-White Industries, a supplier of chemical metering pumps and flow meters, recently sat down with Water Online Radio and explained the difference between peristaltic pumps and diaphragm pumps.

Upcoming Tech: Alternatives To Coal-Based Activated Carbon, Magnetite Ballasted, And More

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.

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DRINKING WATER DISINFECTION VIDEOS

Severn Trent Services Expands Capabilities For Disinfection, Nutrient Removal, And Filtration

Severn Trent Services Expands Capabilities For Disinfection, Nutrient Removal, And Filtration

Water Online’s Ron Grunsby interviews John Dyson of Severn Trent Services to uncover the latest innovations and developments from the company, including the product line on display at WEFTEC 2012.

An Introduction To NeoTech Aqua Solutions

An Introduction To NeoTech Aqua Solutions

Whether you’re managing municipal waters, working with cooling towers, or producing clean water, NeoTech Aqua Solutions offers disinfection, TOC reduction, and ozone destruction products that can be easily sized for your requirements.  Real-time dosimetry units provide exact dosage measurements, and a minimum number of lamps allow for halting of water flow without powering the unit down.

WEDECO PRO<sub>3</sub>MIX Overview

WEDECO PRO3MIX Overview

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.

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DRINKING WATER DISINFECTION SUPPLIERS

  • Arch Chemicals, Inc.
    Arch Chemicals, Inc.

    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
    Calgon Carbon Corporation

    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.
    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.

  • Membrana
    Membrana

    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.

  • MIOX Corporation
    MIOX Corporation

    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.

  • PEPCON Systems
    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 Ozone
    Pinnacle Ozone

    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.

  • Severn Trent Services
    Severn Trent Services

    Severn 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

  • TrojanUV
    TrojanUV

    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.

  • WEDECO -- A Xylem Brand
    WEDECO -- A Xylem Brand

    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
    UV Pure Technologies

    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.

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.