DRINKING WATER

Top 10 Reasons To Choose A Diaphragm Actuated Control Valve

Every water system typically consists of piping networks that distribute water from a source or storage reservoir to the end users. This usually will require some form of a valve that will have to be controlled.  

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • China Power Plant Reduces Capital Costs, Energy Use With New Integrated Membrane System
    China Power Plant Reduces Capital Costs, Energy Use With New Integrated Membrane System

    As engineers come under increasing pressure to reduce maintenance and operating costs, inefficient combination double-pass reverse osmosis and electrodeionization (RO/EDI) water treatment systems have begun to lose popularity as a means of providing ultra-pure water. Integrated membrane systems (IMS), on the other hand, combine multiple membrane-based water treatment processes into a single system. In this case study, find out how a heat and power plant in Northeast China lowered capital costs and energy use by adopting an IMS to replace its conventional water treatment system.

  • Feeling The Pressure To Reduce Leakage?
    Feeling The Pressure To Reduce Leakage?

    Water is a resource that is often taken for granted. As we see the effects of climate change and population growth, the challenges we will face regarding water supply and availability will only increase. Examples of this are beginning to surface extensively in many areas of the world. In Adelaide, Australia, the Murray River has long supplied Adelaide with its source of water however the Murray River has seen extensive overuse for potable, agricultural and industrial use and now combined with changing weather patterns, Adelaide is in trouble. By Brad Clarke, VP of Marketing & Sales, Singer Valve

  • The Future Of Water Supply In Florida
    The Future Of Water Supply In Florida

    A majority of water utilities in Florida have historically relied on groundwater for their drinking water supply. In 2010, Florida water utilities used 2.2 billion gallons per day (BGD) of freshwater for public water supply compared to a total of 6.3 BGD used. Groundwater represented 89% of the 2.2 BGD freshwater used for public water supply (USGS, 2013). Fresh groundwater sources at shallow depths have historically been available in abundance By Gerardus Schers, Philip Waller, and Michael Condran, MWH Global

  • Add Flow To Your Liquid Analysis With Advanced Analytical Instrumentation
    Add Flow To Your Liquid Analysis With Advanced Analytical Instrumentation

    Averting regulatory violations and fines. Avoiding system disruptions. Maintaining effective monitoring in complex applications. How do you tackle these kinds of age-old plant monitoring problems? 

  • In California, Come Rain Or Shine, Upfront Efficiency Is Always In Style
    In California, Come Rain Or Shine, Upfront Efficiency Is Always In Style

    Caught between a withering drought and floods from winter storms, California faces the worst of both worlds—dealing with scarcity as well as stormwater.  America, and much of the world, is watching to see how this trendsetting state handles those challenges.  After generations of setting America’s style, from cowboys to Beatniks to Beach Boys to Silicon Valley billionaires, California can set perhaps its most important trend yet—it can lead the way to a more water-efficient America.  It has to.  The good news is that it can. By Jim Lauria, Senior Vice Director-Water Treatment, Bilfinger Water Technologies

  • White Paper: Impact Of HTA Dosing On Vent Stream Acidity Of An Acid Dosed MSF Plant As a part of the HTA dosing trial, a vent and distillate sampling system was designed to monitor acidity due to carbon dioxide in the MSF plant. This paper will discuss the results of the HTA dosing trial with respect to the effect on venting and corrosion.
  • How Larger Flow Meters Speak Volumes
    How Larger Flow Meters Speak Volumes

    As the price of water continues to increase, errors in flow measurement are magnified for distribution networks that transport large volumes of water. These systems often incorporate meters over 48 inches in diameter, which can be a challenge to calibrate. Learn how choosing the proper calibration method can ensure the most accurate measurements. By Richard Lowrie, Water and Wastwater Industry Specialist, KROHNE, Inc.

  • Theoretical Operation Of High-Efficiency Ultraviolet Water Treatment Chamber
    Theoretical Operation Of High-Efficiency Ultraviolet Water Treatment Chamber

    The NeoTech Aqua ReFleX™ water purification chambers are the most efficient and compact units available today. They require an order of magnitude less energy and less than 25% of the system volume to achieve the same or better purification result as competing chambers. This is the first in a series of three white papers explaining the benefits of these systems. By J. R. Cooper, Ph.D, NeoTech Aqua Solutions, Inc.

  • Pre-Filtering Multi Media Systems With Automatic, Self-Cleaning Filters
    Pre-Filtering Multi Media Systems With Automatic, Self-Cleaning Filters Riviera Water District provides potable water for a small community at Clear Lake in Northern California. This lake historically produces significant summer algae blooms and, as a natural lake, has creek sediment runoffs in the winter
  • Constructing A Winding Box Culvert Channel In A Steep, Rocky Canyon
    Constructing A Winding Box Culvert Channel In A Steep, Rocky Canyon

    Special precast box culverts were used for one of the most significant segments of the $25.8 million emergency water restoration project, designated by the NRCS, known as the Cache Water Restoration Project (CWRP). The CWRP project involved the reconstruction and improvement of approximately six miles of mostly open, unlined channels that make up the Logan and Northern, as well as the Hyde Park and Smithfield canals. The project incorporated new precast pipeline, box culverts, a section of pressurized pipe, metering systems, turn-outs, head gates, and improved maintenance access.

More Drinking Water Case Studies and White Papers

DRINKING WATER APPLICATION NOTES

More Drinking Water Application Notes

DRINKING WATER PRODUCTS

Hydro-Guard® HG-6

Hydro-Guard® HG-6

The Hydro-Guard® HG-6 Hydrant Automatic Flushing System takes automatic and programmable flushing capabilities anywhere in the water distribution system where a fire hydrant is available.

ScreenMaster RVG200 Paperless Recorder

ScreenMaster RVG200 Paperless Recorder

The ScreenMaster RVG200 is a secure, easy-to-use paperless recorder. Up to 24 process signals can be connected directly to the RVG200's analog inputs or transferred to it via digital communications. All process data, including alarm conditions, math calculation results and totalizer values, are displayed clearly to the operator and archived securely in an encrypted format for review using the accompanying DataManager Pro PC software.

AquaDiamond<sup>®</sup> Cloth Media Filtration System

AquaDiamond® Cloth Media Filtration System

The AquaDiamond® filter, a new horizontal configuration for the Cloth Media Filter, has been produced. It utilizes PA-13 pile cloth as its filter media.

Thermatel&reg; TD1/TD2 Thermal Dispersion Flow/Level/Interface Switch

Thermatel® TD1/TD2 Thermal Dispersion Flow/Level/Interface Switch

TD1 and TD2 Thermal Dispersion flow/level/interface switches provide a new level of performance and reliability not found in previous switches. 

BioBarrier® Membrane BioReactor (MBR) & HSMBR

BioBarrier® Membrane BioReactor (MBR) & HSMBR

Bio-Microbics introduces a new generation of wastewater treatment solutions, the BioBarrier® HSMBR® (High Strength Membrane Bioreactor), to help meet the increasingly stringent needs of specialized applications. The membranes and processes used in this advanced system act as an impenetrable physical barrier for nearly all common pollutants found in wastewater today. The advanced technology offers the highest quality effluent possible on the market.  The BioBarrier® MBR was the first system to be approved for water reuse (NSF/ANSI Std 350, class R) by the NSF (National Sanitation Foundation) International.

Stainless Steel E-Series&reg; Ultrasonic Meter

Stainless Steel E-Series® Ultrasonic Meter

E-Series Ultrasonic water meters from Badger Meter use solid-state technology in a compact, totally encapsulated, weatherproof, and UV-resistant housing, suitable for residential and commercial applications.

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LATEST INSIGHTS ON DRINKING WATER

  • Why Engineers Can’t Solve The Water Shortage With Supply-Side Solutions
    Why Engineers Can’t Solve The Water Shortage With Supply-Side Solutions

    We are at the point where there is precious little left to dig or dam or drain or pump, and we are going to have a problem explaining that us engineers don’t have all the answers. 

  • Reflective UV Cuts Energy Use By 90%
    Reflective UV Cuts Energy Use By 90%

    NeoTech has created a new reflective ultraviolet (UV) disinfection technology that requires only eight lamps— roughly 1/10 of the number of lamps required in similar flow-sized conventional UV systems—and only about 2kw of power.

  • Decrease Membrane Treatment Capital And O&M Costs With Optimum Flux Rates
    Decrease Membrane Treatment Capital And O&M Costs With Optimum Flux Rates

    Despite a global effort to standardize units of measure to the metric system, the water treatment industry still follows the U.S. trend in resisting that directive by referring to water volumes in treatment plants as gallons per day (GPD).  While achieving a specified permeate GPD is certainly important in overall membrane plant design, production capacity has absolutely nothing to do with determining optimal methods of treating site-specific feedwaters and offers no indication of potential membrane fouling rates and related maintenance costs. To evaluate these factors, knowledgeable professionals rely on membrane flux rates as the key consideration in achieving optimal system design and operation. By Harold G. Fravel Jr., Executive Director, American Membrane Technology Association and Karen Lindsey, VP, Avista Technologies, Inc.

  • Water Recycling Made Easy: A Guide To Water Reuse For Food and Beverage Manufacturers
    Water Recycling Made Easy: A Guide To Water Reuse For Food and Beverage Manufacturers

    Available water supply can be compromised by more than just drought— a challenge food and beverage manufacturers know well.

  • The UV Uprising: How UV Disinfection Will Claw Its Way To Prominence
    The UV Uprising: How UV Disinfection Will Claw Its Way To Prominence

    Chlorination in all of its forms — gas, liquid, or solid — has been the primary way for treatment plants to disinfect the treated wastewater. The treatment plants that use gas chlorination must face federal regulatory oversight in the form of a Risk Management Program (RMP). Liquid chlorine plants trade in the regulatory oversight for a more expensive and less effective product. While chlorine in its solid form is good for small treatment facilities known as package plants (named for their mobility). However, ultraviolet (UV) technology is rapidly altering the landscape of disinfection throughout the industry. By Sheldon Primus, MPA, COSS

  • Has Fracking Gone ‘Green’?
    Has Fracking Gone ‘Green’?

    There are few topics more controversial these days than hydraulic fracturing ("fracking"). While the debate rages on as to whether fracking poses a risk to water quality, a new desalination technique addresses two other environmental concerns: water scarcity and greenhouse gas (GHG) emissions. Developed by researchers at the University of British Columbia (UBC), the breakthrough technology uses excess carbon dioxide created in the fracking process to desalinate the process water, making it available for water reuse. It also generates chemicals — hydrochloric acid and carbonate salts — that are valuable for many industrial applications.

More Drinking Water Features

DRINKING WATER VIDEOS

Video: Mayor Bloomberg Announces Installation Of Automated Water Meter Readers

Video: Mayor Bloomberg Announces Installation Of Automated Water Meter Readers

Mayor Bloomberg, Department of Environmental Protection Acting Commissioner Lawitts and Department of Information Technology and Telecommunication Commissioner Cosgrave announced today that citywide installation of automated water meter reading technology has begun.
Mueller Systems 420 Remote Connect/Disconnect Meter (RDM) Video

Mueller Systems 420 Remote Connect/Disconnect Meter (RDM) Video

See how 420 Remote Connect/Disconnect Meter (RDM) from Mueller Systems can optimize AMI and AMR systems to help utilities improve the operational efficiency of their water systems.

The YSI Pro2030 Handheld Conductivity And DO Meter Video

The YSI Pro2030 Handheld Conductivity And DO Meter Video

The YSI Pro2030 DO/conductivity water quality meter is ideal for any field application. The instrument is rugged and extremely simple to use.

The House On Wade Avenue

The House On Wade Avenue

In Raleigh, N.C., there's a house... or what looks like a house. What's hidden inside is more important than most people realize.

The New IQ SensorNet Product Video

The New IQ SensorNet Product Video

The IQ SensorNet wastewater treatment process monitor is a powerful, modular system designed to be flexible enough to place anywhere in your wastewater treatment system and add to it at anytime.

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ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

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 for contaminant removal and the removal of pathogens 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.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.