DRINKING WATER TREATMENT

Groundwater Replenished To Prevent Sea Level Rise
Groundwater Replenished To Prevent Sea Level Rise

Groundwater in Southeastern coastal Virginia is depleting due to over-drafting without intentional replenishment. This phenomenon makes the Potomac aquifer susceptible to saltwater intrusion as well as land subsidence, or the gradual settling or sudden sinking of the earth’s surface. The Hampton Roads Sanitation District responded to these issues by using groundwater augmentation as a way to recharge the aquifer, prevent saltwater intrusion, and potentially increase ground elevation.

DRINKING WATER TREATMENT CASE STUDIES AND WHITE PAPERS

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DRINKING WATER TREATMENT APPLICATION NOTES

  • Application Note: Ozone Measurement In Potable Water
    Application Note: Ozone Measurement In Potable Water

    Ozone is a powerful oxidizing agent that can be used to destroy the organic compounds that affect the taste and odor of potable water. Environmental concerns have led to increased use of ozone because, unlike chlorine, it does not form hazardous by-products.

  • Membrane Degassing and Debubbling of High Viscous Fluids with 3M™ Liqui-Cel™ Membrane Contactors
    Membrane Degassing and Debubbling of High Viscous Fluids with 3M™ Liqui-Cel™ Membrane Contactors

    Increased gas content often leads to problems with bubble formation in highly viscous fluids. 3M™ Liqui-Cel™ Membrane Contactors can provide a simple, compact, and efficient in-line solution for removing bubbles from viscous liquids before they create problems in a process operation.

  • Real-Time Conductivity Monitoring Estimates Chloride Levels In Minnesota Watershed By Using The Aqua TROLL 200
    Real-Time Conductivity Monitoring Estimates Chloride Levels In Minnesota Watershed By Using The Aqua TROLL 200 Monitoring deicing chemical levels can help researchers, city governments, and regulatory agencies understand runoff impacts on surface water, groundwater, and surrounding environments.
  • Active Energy Control – Energy Reductions Of Up To 10% Above Standard Drives
    Active Energy Control – Energy Reductions Of Up To 10% Above Standard Drives

    Energy costs continue to increase. At the same time, there is increased pressure to reduce utility bills without sacrificing operations or comfort.

  • Application Note: Busseron Creek Watershed Partnership Addresses Concerns In A Rural Watershed As with other watershed organizations, the Busseron Creek Watershed Partnership (BCWP) exists because of surface water quality degradation. In this case, those waters drain 163,231 acres of a watershed that crosses the boundaries of Vigo, Clay, Green, and Sullivan counties in West- Central Indiana. By YSI
  • Free Chlorine Measurement In Drinking Water Treatment

    Before water can be used as a safe and reliable source for drinking water, it must be properly treated. Since water is a universal solvent, it comes in contact with several different pathogens, some of which are potentially lethal, and inactivation is accomplished through chemical disinfection and mechanical filtration treatment. This treatment consists of coarse filtration to remove large objects and pre-treatment which includes disinfection using chlorine or ozone

  • Chlorine Method For UKAS Accreditation And DWI Compliance At Welsh Water
    Chlorine Method For UKAS Accreditation And DWI Compliance At Welsh Water

    In 2013 the Drinking Water Inspectorate for England & Wales announced that water samples collected in England and Wales must be tested in a laboratory that meets specific standards for drinking water sampling and analysis. At the time of the new instruction, the chlorine method employed at the Welsh Water Bretton laboratory was unable to meet these requirements, notably for the prescribed limit of detection. This prompted the laboratory to investigate new analytical options for monitoring residual chlorine.

  • 3M™ Liqui-Cel™ Membrane Contactors Can Help Meet Pure Steam Requirements In Pharmaceutical Industry
    3M™ Liqui-Cel™ Membrane Contactors Can Help Meet Pure Steam Requirements In Pharmaceutical Industry

    Pure steam is used in sterilization chambers as a common method to sterilize pharmaceutical products, such as equipment parts, instruments, containers and materials for sterile environments.

  • Removal Of PFCs With Activated Carbon
    Removal Of PFCs With Activated Carbon

    In recent years, various perflorinated chemicals (PFCs) have come under increasing scrutiny due to their presence in the environment, in animals, and in human blood samples. There are two major classes of PFCs: perfluoroalkyl sulfonates such as perfluorooctanesulfonic acid (PFOS) and long chain perfluoroalkyl carboxylates such as perfluorooctanoic acid (PFOA) and perfluorononanoic acid (PFNA).

  • New Water Turbidity Measurement Technology — The US Experience
    New Water Turbidity Measurement Technology — The US Experience

    The amount of insoluble matter present in drinking water is an essential quality indicator. Silt, sand, bacteria, spores, and chemical precipitates all contribute to the cloudiness or turbidity of water. Drinking water (DW) which is highly turbid can be unpalatable and unsafe. Consumption of even low concentrations of certain bacteria and other microorganisms can cause serious health effects. Consequently, an accurate and sensitive measurement of turbidity is vital for ensuring that drinking water is free of these contaminants.

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DRINKING WATER TREATMENT PRODUCTS

Membray MBR Membrane Membray MBR Membrane

Toray's Membrane Bioreactor (MBR) process is a combination of biological wastewater treatment and membrane filtration.

UV Technologies UV Technologies

Almost 30 years ago, Calgon Carbon introduced one of the first advanced ultraviolet (UV) oxidation processes to remediate contaminated groundwater. Then soon after, Calgon Carbon became the first company to adapt the technology to cost-effectively inactivate pathogens in surface water. These breakthroughs have established Calgon Carbon as a world leader in the use of UV technology for disinfection and oxidation to treat drinking water, wastewater, groundwater, process water and ballast water.

The Emerson Annubar® Flowmeter Now Gas NSF Approvals The Emerson Annubar® Flowmeter Now Gas NSF Approvals

Now, the Rosemount Annubar Flowmeter is certified to the NSF/ANSI 372 standard for lead-free plumbing, as defined by the U.S. Safe Drinking Water Act. Patented Annubar averaging pitot tube technology offers many advantages that help facilities save time and money: real-time mass and energy flow measurement and integral temperature design help minimize permanent pressure loss and produce energy savings.

ReFleX™ Efficiency ReFleX™ Efficiency

For both disinfection and TOC-reduction applications, NeoTech Aqua Solutions’ patented ReFleX™ UV chamber technology represents the state-of-the-art in high-efficiency UV systems by reflecting over 99% of the UV we generate back into the water.

3S Reagents For Volumetric Titration 3S Reagents For Volumetric Titration

Connect Your Lab
3S is an intelligent packaging solution protected with an originality seal. The cap provides information via Radio-frequency identification or RFID, enabling automated data transfer between the reagent and titration instrument. Intelligent communication for improved performance.

Capital Controls® Series 1870E Chlorine Residual Analyzer Capital Controls® Series 1870E Chlorine Residual Analyzer

Capital Controls® Series 1870E chlorine residual analyzer technology has been independently tested and proven to be a reliable analyzer for continuous, accurate residual analysis.

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LATEST INSIGHTS ON DRINKING WATER TREATMENT

  • What’s In Your Water? An Updated Analysis
    What’s In Your Water? An Updated Analysis

    NRDC’s new analysis of the most recent EPA data finds that nearly 30 million people in the United States drank water from community water systems that violated the EPA’s Lead and Copper Rule between January 2015 and March 2018.

  • USGS Shares Wellspring Of Insight On Groundwater Trends
    USGS Shares Wellspring Of Insight On Groundwater Trends

    If your customer base is among the 140 million people who depend upon groundwater for drinking water, irrigation, or agriculture, it is important to know whether you can expect the quality of your source water today to be the same tomorrow. Fortunately, a recent update to the first-of-its-kind assessment of trends in groundwater supply has been announced by the U.S. Geological Survey (USGS) to help you identify emerging problems. The results are detailed in an informative and easy-to-use interactive map.

  • How To Boost Water System Efficiency With Smart Output Technology
    How To Boost Water System Efficiency With Smart Output Technology

    Water utilities are installing automated meter reading (AMR) and advanced metering infrastructure (AMI) systems more frequently. These systems often help utilities improve customer relations and provide valuable real-time data to improve operations. The ability for various meters to communicate with AMR and AMI technology has become more important as these systems become commonplace.

  • EPA Researchers Partner With WaterStep To Deliver Clean Water During Emergencies
    EPA Researchers Partner With WaterStep To Deliver Clean Water During Emergencies

    Following a disaster like the back-to-back hurricanes that hit Texas, Florida, and Puerto Rico in 2017, water systems can become flooded and unable to provide safe drinking water to communities. EPA researchers recognized the need for portable water treatment systems that can quickly and cost-effectively provide safe drinking water to affected communities following a disaster. 

  • Using Flow Meters To Reduce Non-Revenue Water
    Using Flow Meters To Reduce Non-Revenue Water

    Utility managers are continually challenged to run water systems in the most efficient manner. Reducing non-revenue water (NRW) is an important component for system efficiency. In many states, regulators are placing caps on NRW or requiring reductions in the amount of NRW. Accurate and well-planned flow measurement can be used to locate areas of water leakage and reduce NRW.

  • Treating Emerging Contaminants With UV Advanced Oxidation
    Treating Emerging Contaminants With UV Advanced Oxidation

    As technology improves, contaminants can be measured in ever-smaller quantities. Pollutants formerly undetected are now becoming emerging contaminants of concern. Water utility managers must stay abreast of potential new regulations and plan for ways to address these contaminants.

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DRINKING WATER TREATMENT VIDEOS

Video: Hanna Instruments 98703 Portable Turbidity Meter Video: Hanna Instruments 98703 Portable Turbidity Meter
The Hanna Instruments 98703 portable turbidity meter is perfect for stormwater testing.
People Drink Sewage Water For The First Time

Rather drink sewage water than LA tap water any day.

Video: Monitoring Water Consumption Video: Monitoring Water Consumption

KROHNE's Joe Incontri discusses monitoring water consumption and the importance of accurate and reliable meters. Water savings means green savings.

Science Safeguards Drinking Water From Harmful Algal Blooms

Toxins from harmful algal blooms are increasingly contaminating source waters, as well as the drinking water treatment facilities that source waters supply. EPA researchers are helping the treatment facilities find safe, cost effective ways to remove the toxins and keep your drinking water safe.

Kupferle Foundry - #9800i-GENESIS Turbine Powered Automatic Flushing Device With Chlorine Analyzer

The Eclipse i-Series model #9800i-GENESIS is the newest Intelligent Flushing & Monitoring Station Kupferle offers to maintain safe residual levels and remove DBPs from consumers' water. This permanently installed station incorporates a built-in chlorine analyzer to measure and record disinfectant residual levels based on a programmed sampling schedule.

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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.