DRINKING WATER
Building Resilient Water Treatment: How Ozone Systems Help Utilities Prepare for Extreme Weather
Ozone systems build resilience into water treatment. They ensure utilities remain chemically self-sufficient, allow fast recovery from power outages, and handle rapid water quality shifts.
DRINKING WATER CASE STUDIES AND WHITE PAPERS
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The Right Choice For Environmentally Friendly Pipe Installation
Like several of its counterparts in Florida, Pasco County is a name frequently repeated in the news when it comes to growth.
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Thrust Restraint Design Of Vertical Offsets And Tees
There are numerous fitting combinations and configurations that are used in the everyday construction of pressurized water lines. This report describes vertical offsets, tees, and using joint restraint products to simplify their installation. The use of joint restraint products virtually eliminates thrust blocks and tie rods.
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Improving The Quality Of Tertiary Effluent For Indirect Potable Reuse With Geographic Constraints
The Mazzei Sidestream Venturi Injection – Pipeline Flash Reactor System provides a feasible alternative for dissolution of ozone at the Clark County Water Reclamation District (CCWRD) in Las Vegas, because it allowed for flexibility in basin design to meet geographic site constraints.
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Measuring Arsenic Contamination In Water – Challenges And Solutions
Read about how adressing arsenic contamination promptly is essential to prevent long-term health problems.
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Finding A Perfect Fit For Mix-And-Match Piping
Today’s water/wastewater piping options offer numerous advantages in terms of cost, performance, and anticipated service life. Unfortunately, utilities must still deal with what’s already in the ground — steel, cast iron, ductile iron, asbestos cement, plastic, concrete, and even wood. Here are guidelines on making transitions between old and new pipes of varying sizes and materials as smooth as possible.
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GoAigua's Digital Twin Saves 1B+ Gallons Of Water/Year
Water transport and distribution systems in many cities have become complex to manage as they are forced to adjust to the problems of population growth, resource shortages, aging infrastructure and optimization of daily network operations. Consequently, digital twins of water networks are increasingly widely used for decision-making around their operation and management.
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Asset Management Through Leak Prediction: Analysis On The Impact Of Temperature Fluctuations
About 2.2 billion people worldwide do not have access to safely managed drinking water services. Climate change, pollution and population growth exacerbate this challenge, at a time when the coronavirus crisis has highlighted the pressing need to address supply issues.
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How To Utilize Limited Resources To Address Water Loss During A Drought
Discover how to track water loss, analyze results, and standardize operating practices for your team with more efficiency.
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Overcoming Space Constraints For An Accurate Flow Measurement
Accurate and reliable flow measurement is critical to many water treatment and distribution applications. However, this can be a dicey proposition because most metering solutions require a set amount of straight pipe runs, before and after the device, to ensure accuracy. To address these and other related issues, an innovative solution has emerged.
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Groundwater Remediation Ultrafiltration System Pilot And Operating Data
For many shuttered or abandoned chemical production sites, groundwater remediation is a requirement to address health, safety, and environmental issues. Remediation generally involves extracting groundwater from wells, processing it through various separation and purification process steps, and reinjecting the water back underground.
DRINKING WATER APPLICATION NOTES
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Protecting Pumps From Dead Head Conditions4/6/2017
The C445 motor management relay offers the most configurable protection options in the industry, with features specifically designed to protect critical pumps from costly damages due to dead-head and other underloaded or starved pump conditions.
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How To Install A Submersible Pump In Discharge Tubes11/28/2012
In the fields of water and waste water technology, submersible pumps represent a viable economic and technical alternative to conventional, dry-installed pumps. In particular, they offer a number of handling advantages during maintenance and installation work.
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Protection Of Membrane Systems Utilized For Municipal Water12/1/2020
As water scarcity issues around the world become more acute, more municipalities are having to turn to alternative water sources for potable water supplies. Also, many municipalities in coastal areas are seeing the quality of their water sources degrade as sea water intrusion occurs.
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Application Note: YSI Real-Time Water Quality Monitoring And The IPSWATCH-EMPACT Program12/28/2005The Ipswich and Parker Rivers watersheds lie only a short distance north of Boston, MA. The first settlements in these watersheds began in the early 1600s. Since that time, residents have relied heavily on the natural resources of the Parker and Ipswich Rivers, their coastal estuaries and Plum Island Sound, which is known as the Great Marsh. This ecosystem has been designated and protected by the Commonwealth of Massachusetts as an Area of Critical Environmental Concern (ACEC).
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Real-Time Water Quality Data For Agriculture9/23/2020
We arm farmers with mission-critical water data to help enhance crop yield and taste. KETOS delivers valuable insights for fluctuations in deficiency and toxicity.
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Bringing Efficiency And New Confidence To BOD₅ Analysis2/4/2013
Biochemical Oxygen Demand (BOD) analysis is the test everyone loves to hate—and for compelling reasons.
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Application Note: Simultaneous Determination Of Total Bound Nitrogen (TNb) And Total Organic Carbon (TOC) In Aqueous Samples5/31/2011Total bound nitrogen (TNb) consists of dissolved ammonia, nitrates, nitrites, amines, and other organic nitrogen-containing compounds. TNb measurements represent an alternative to Total Kjeldahl Nitrogen (TKN) analysis for rapid screening of industrial wastewater, drinking water,agricultural run-off, and surface waters. By OI Analytical
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Simplify And Optimize Your Process With Level And Pump Control3/1/2022
Level controllers have evolved to meet today’s environmental challenges and industry demands. Learn how they support improved process management and, ultimately, a better bottom line.
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The Process Of Deionizing Water10/29/2021
Years ago, high purity water was used only in limited applications. Today, deionized (Dl) water has become an essential ingredient in hundreds of applications including: medical, laboratory, pharmaceutical, cosmetics, electronics manufacturing, food processing, plating, countless industrial processes, and even the final rinse at the local car wash.
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Harmonics Reduction Methods4/17/2017
There are several basic methods for reducing harmonic voltage and current distortion from nonlinear distribution loads such as adjustable frequency drives (AFDs). Following is a description of each method, along with each method’s advantages and disadvantages.
LATEST INSIGHTS ON DRINKING WATER
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Amazon and Xylem partner to tackle Mexico’s leaking water systems as the country balances water scarcity and a growing tech sector.
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Water scarcity is increasingly impacting sectors from agriculture and energy to urban planning and high-tech manufacturing. Recently, industry leaders gathered to explore how new technologies and complex industrial demands are forcing a fundamental rethinking of water infrastructure.
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Nobel-winning molecular materials are poised to reinvent purification, desalination, and reuse.
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Researchers have developed polyimide-based membranes for membrane distillation (MD) that overcome three persistent issues in membranes for water treatment and gas separations: the need for pore-forming chemicals that prevent recycling, performance degradation due to pore wetting and fouling, and the inherent trade-off between high water flux and selectivity.
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Small municipalities and industrial sites face constant pressure: deliver safe, stable water with limited resources and tight deadlines. Traditional on-site construction can stretch project schedules by months and introduce quality and cost risks. By shifting much of the fabrication off-site, these risks are dramatically reduced.
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The 2024 hurricane season was one of the most severe on record, creating unprecedented destruction to the tune of $182.7 billion worth of damage. Scientists predict that this year's storm season, which officially began June 1, will likely be highly active and volatile as well. As hurricanes become more difficult to accurately predict and prepare for, the damage caused by burst pipes, flooding, downed trees and debris, and disrupted utilities is also increasing.
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:
- Source water for a community’s drinking water supply
- Drinking water treatment of source water
- 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.