DRINKING WATER TREATMENT CASE STUDIES AND WHITE PAPERS

  • White Paper: The Leopold Clari-DAF System for Potable Water Clarification Potable water treatment plants process raw water from ground and surface sources to produce a product that meets all of the regulatory requirements for consumption. Surface water treatment plants are required to have at least filtration, and usually will first remove solids in order to optimize filter performance. This paper presents the Leopold® Clari-DAF™ (Dissolved Air Flotation) system as an excellent choice for potable water clarification. In the Clari-DAF system process, raw water particles are flocculated and separated out of the water by floating them to the surface, rather than settling them to the bottom of a basin
  • South Australia’s $403 Million North South Interconnection System Project (NSISP) Uses A “Super” Valve To Perform In A Variety Of Extreme Conditions
    South Australia’s $403 Million North South Interconnection System Project (NSISP) Uses A “Super” Valve To Perform In A Variety Of Extreme Conditions

    NSISP is one of South Australian Water Corporation’s (SA Water) biggest infrastructure projects undertaken in Adelaide metropolitan to connect the north and south drinking water distribution systems and to increase access to their desalination plant. The project included the construction of 32 km of pipeline through metropolitan main roads and suburban inner streets. This is no small feat and getting it done right meant fitting together a lot of different moving pieces.

  • UV Eliminates Cryptosporidium Issues In The Heartland
    UV Eliminates Cryptosporidium Issues In The Heartland

    The City of Moline is now adding validated UV systems to provide an additional barrier for the filtered water, which will improve water quality and ensure that none of the chlorine tolerant organisms such as Cryptosporidium is present. The City of Moline is located in the heart of the Midwest, tucked between the banks of the Mississippi and Rock River in Rock Island.  Moline is one of four cities that make up the Quad Cities that include Rock Island, Illinois and Bettendorf and Davenport Iowa.

  • Finding The Right Pretreatment Mix For RO/Ion Exchange Systems
    Finding The Right Pretreatment Mix For RO/Ion Exchange Systems

    Smart defense benefits the entire team. Having an ffective, durable water pretreatment system in advance of reverse osmosis (RO) or ion exchange systems is the first, most critical line of defense ensuring smooth, more trouble-free performance downstream. Contributed By Eco-Tec

  • White Paper: A Practical Guide to Sampling and Testing Filter Media This paper presents a practical guide to obtaining a representative sample of filter media at the point of manufacture and on the job site as well as providing insight into selecting a media testing laboratory and the pitfalls of the various tests performed on those samples...
  • Pulse Burst Radar ‘Levels’ Competition For Chemical Waste Tank Process Control
    Pulse Burst Radar ‘Levels’ Competition For Chemical Waste Tank Process Control

    Our customer case studies illustrate how our proven level and flow controls are helping industry leaders improve the safety of their mission-critical applications. This recent case study demonstrates that pulse burst radar technology can provide a highly reliable level control solution for challenging process applications.

  • Low Pressure, High Output 800‐Watt Amalgam System Performing Efficiently
    Low Pressure, High Output 800‐Watt Amalgam System Performing Efficiently

    The Trail Lakes Hatchery is owned by the State of Alaska and is managed under contract by the Cook Inlet Aquaculture Association (CIAA) on behalf of the Alaska Department of Fish and Game. CIAA was established in 1976 to provide the Cook Inlet drainage with an organized and reliable salmon stock. The Trail Lakes facility is permitted to introduce sockeye and coho salmon at several sites throughout the Cook Inlet watershed.

  • High Recovery Reverse Osmosis Water Treatment For Industrial, Agricultural, And Municipal Applications
    High Recovery Reverse Osmosis Water Treatment For Industrial, Agricultural, And Municipal Applications

    Industry accounts for nearly 60 percent of fresh water withdrawals in the developed world and agriculture consumes 70 percent of fresh water supplies globally, according to UNESCO.

  • New Technologies Set To 'Disrupt' The Industry
    New Technologies Set To 'Disrupt' The Industry

    For the unfamiliar, the term “disruptive technology” initially sounds quite bad, as though it describes something that gets in the way. Far from impeding progress, however, disruptive technologies actually accelerate progress exponentially by disrupting the status quo. Think personal computers vs. mainframes, or cell phones vs. land lines.

  • Case Study: Customized Hydraulic And Water Quality Model Interface In March 2003, Black & Veatch started a project to streamline the hydraulic and water quality modeling processes for one of the largest wholesale water suppliers in Florida. The water supplier delivers water from fourteen different sources to more than two million people in six different communities. The client needed a way for its staff of water quality, planning, and engineering professionals to perform hydraulic simulations on a regular basis
More Drinking Water Treatment Case Studies and White Papers

DRINKING WATER TREATMENT APPLICATION NOTES

More Drinking Water Treatment Application Notes

DRINKING WATER TREATMENT PRODUCTS

Arkal Spin Klin Disc Filtration

Arkal Spin Klin Disc Filtration

Arkal Spin Klin Disc Filtration systems – now part of the Amiad family of technologies – delivers reliable, accurate and efficient water filtration for years, along with worldwide support.
AURORA® Magnetic Level Indicator

AURORA® Magnetic Level Indicator

The AURORA product combines the operating system of a conventional float-based magnetic level indicator (MLI) with the leading-edge Eclipse® guided wave radar transmitter developed for level measurement applications by Magnetrol®.

Wallace & Tiernan® Chlorine Gas Feed Systems

Wallace & Tiernan® Chlorine Gas Feed Systems

About 100 years ago, Charles F. Wallace and Martin F. Tiernan installed the first chlorinator in New York, and since, chlorine gas has been the predominant chemical for the disinfection of water.

TrojanUVSwift™ — Drinking Water Disinfection System

TrojanUVSwift™ — Drinking Water Disinfection System

The TrojanUVSwift™ offers proven performance against waterborne pathogens including viruses, bacteria and protozoa. Our advanced systems meet disinfection targets with unsurpassed reliability with no known disinfection by-products.

WEDECO TAK Series Open Channel Disinfection System by Xylem

WEDECO TAK Series Open Channel Disinfection System by Xylem

WEDECO TAK Series Open Channel Disinfection System for wastewater applications.

Mechanical Flow Switches: F10 & F50

Mechanical Flow Switches: F10 & F50

Magnetrol® flow switches are highly reliable devices utilized to sense the start or stop of flow in horizontal pipelines containing oil and petroleum derivatives, chemicals, water, or air.

More Drinking Water Treatment Products
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LATEST INSIGHTS ON DRINKING WATER TREATMENT

  • Arsenic Update: Top Technologies Revealed
    Arsenic Update: Top Technologies Revealed

    The federal regulation for arsenic has been in place since 2002, and yet many utilities remain noncompliant. The culprit isn’t treatment capability, but cost. It happens that the most popular treatment technique is also quite expensive — but it doesn’t have to be.

  • A Preview Of IDA World Congress 2015
    A Preview Of IDA World Congress 2015

    From August 30 to September 4, the International Desalination Association (IDA) will be hosting its biennial world congress in San Diego. 

  • ED vs. RO: The Benefits Of Electrodialysis For Desalination
    ED vs. RO: The Benefits Of Electrodialysis For Desalination

    There is no doubt that reverse osmosis (RO) currently reigns among desalination techniques, if your metric is total number of installations. But a new competitor has arisen, at least for particular applications. If you have brackish water in the 2,000 to 15,000 ppm range of total dissolved solids (TDS), you may want to consider electrodialysis (ED) over RO.

  • UVC LEDs For Biofilm Prevention
    UVC LEDs For Biofilm Prevention

    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. 

  • Coming Of Age: UV-C LED Technology Update
    Coming Of Age: UV-C LED Technology Update

    Sometimes technology innovations come along which cause a paradigm shift in how products are designed.

  • The Zen Of Smart Pressure Management: Calming Water Distribution Networks
    The Zen Of Smart Pressure Management: Calming Water Distribution Networks

    Over recent years, water companies around the world have enhanced their ability to control the pressure of water in their distribution networks to improve customer service and achieve environmental savings.

More Drinking Water Treatment Insights

DRINKING WATER TREATMENT VIDEOS

Introducing EXO - A New, State-Of-The-Art Water Monitoring Platform Video

Introducing EXO - A New, State-Of-The-Art Water Monitoring Platform Video

EXO, a state-of-the art water quality monitoring platform, is designed to address the many challenges of collecting accurate field data in the natural environment.

From Toilet To Tap Water

Alex and the crew travel to Saudi Arabia and talk to Noura Shehab, a Ph.D. student at King Abdullah University of Science and Technology (KAUST), about her research to use microbes to power sea water desalination.

Low Flow Sampling Using A TROLL® 9500 Water Quality Instrument

The TROLL® 9500 Water Quality Instrument simplifies multiparameter monitoring. The TROLL 9500 is a powerful, portable unit that houses up to nine water quality sensors, internal power, and optional data logging capabilities.

Video: UAT™ Membrane Filtration Systems

Video: UAT™ Membrane Filtration Systems

Using high quality components, the skid-mounted UAT systems are engineered to effectively produce treated water, free of particulate matter or contaminants
TrojanUVTorrent™ Drinking Water UV Disinfection System (Video)

TrojanUVTorrent™ Drinking Water UV Disinfection System (Video)

The TrojanUVTorrent™ is the solution for large-scale drinking water facilities in need of revolutionary UV disinfection technology.

More From Drinking Water Treatment Videos

ABOUT DRINKING WATER TREATMENT

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.