DRINKING WATER TREATMENT
When a series of water crises in 2014 disrupted conventional utility services in the coastal Argentine city of Caleta Olivia, the city needed a way to ensure an uninterrupted water supply.
DRINKING WATER TREATMENT CASE STUDIES AND WHITE PAPERS
Arsenic Removed From Drinking Water With Iron Oxide Adsorption Treatment
When high levels of arsenic were found in the drinking water in the community of Alto Lampa outside of Santiago de Chile, municipal water provider Aguas Adinas faced a predicament. AdEdge Water Technologies was contacted to design a treatment approach. This case study describes how iron oxide adsorption helped Alto Lampa reduce arsenic levels in treated water to non-detectable concentrations.
Membrane Filtration Water Treatment Plant Meets Hotel Complex's Needs
The Little America West Hotel complex located near the town of Granger, Wyoming, used an outdated surface water treatment plant that provided poor quality water during storm events.
White Paper: High-Efficiency Reverse Osmosis Treats Gray Water For Power Generation
Recycling of gray wastewater as boiler make- up water was the challenge where silica value was typically 85 ppm in this secondary treated wastewater. This paper describes a new design called the High-Efficiency Reverse Osmosis selected for that task, discusses the project technical considerations and highlights the actual performance of the system.
Project Profile: Meadow Lake MHC White Lake, MI 750 GPM Iron & Manganese System In February 2008 AdEdge Technologies, Inc. was selected as the sole vendor by Sun Communities, a nation wide owner and operator of Mobile Home Communities, to supply an iron and manganese treatment system, for the Meadow Lake MHC in White Lake, Michigan. By Adedge Technologies Inc.
Endocrine Disrupting Compounds And Their Treatment
Endocrine disrupting compounds (EDC) are a subset of chemicals identified as contaminants of emerging concern, or “CECs.” EDCs are chemicals that can affect the endocrine (hormonal) systems of humans and animals. Hormones regulate reproduction, growth, and behavior. Anything that can potentially disrupt those functions must be studied carefully.
Water Supplier Ensures DBP Compliance With UV254 Organic Monitoring Mohawk Valley Water Authority (MVWA) is a progressive supplier of potable water. With source water from the Adirondack Mountains, MVWA works to improve on nature and provide superior water quality, always striving to meet or exceed drinking water standards. Like many other surface water sources, MVWA’s water supply is rich with natural organic matter (NOM). Unfortunately, growing research has demonstrated that NOM in water when combined with chlorine leads to the formation of potentially harmful disinfection by-products. By Jodi Glover, Real Tech Inc.
A Practical Solution For Real-Time Organic Monitoring Monitoring organics continuously provides instantaneous water quality data that is vital for several of the most common water and wastewater treatment applications.
A New Generation Of Filling Control Systems
The filling control technology employed in bottling machinery has evolved over the past decade, offering higher levels of accuracy and reproducibility, while achieving extremely high reliability
Next Generation FPI Mag Flow Meter Helps Provide Clean Water For Seattle
The Cedar Water Treatment Facility (CWTF) serves the residents of the City of Seattle. This state-of-the-art plant was designed and built, and is now operated by CH2M Hill. Working together, CH2M Hill and McCrometer improved flow measurement at the facility with the FPI Mag® Flow Meter.
Aquatech Supplies Zero Liquid Discharge System In Puerto Rico Due To Environmental Regulations
AES Puerto Rico Cogeneration Plant (AESPR) is a cogeneration power plant that produces 454 MW of net electricity in its fluidized bed boiler plant in Guayama, which is sold to the Puerto Rico Electric Power Authority (PREPA).
DRINKING WATER TREATMENT APPLICATION NOTES
Alcoholic Beverage Fusel Alcohol Testing With Static Headspace
A static headspace method was developed using Teledyne Tekmar automated headspace vial samplers to meet the method requirements of the Alcohol and Tobacco Tax and Trade Bureau of the US Department of the Treasury (TTB) method SSD: TM:2001 for testing fusel alcohols in alcoholic beverages.
Bottled Water Industry: Liquid Analytical Solutions
Americans consume more than 9.1 billion gallons of bottled water annually - an average of twenty nine gallons per person every year.
Lab Gas Sub-Metering Accuracy Improves With Thermal Flow Meters To Save Money
Facility administrators will find the advanced ST100 Series Thermal Mass Air/Gas Flow Meter from Fluid Components International (FCI) helps them improve the accuracy of specialty gas point of use and sub-metering operations to achieve accurate billing in their labs for better cost tracking and control.
Analysis Of Pesticide Residue In Spinach Using The AutoMate-Q40 An Automated QuEChERS Solution
QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.
Application Note: Miami Conservancy District Uses Nitrate Screening As Conjunctive Management Tool Tasked with monitoring a watershed covering nearly 4,000 square miles, almost 2,300 miles of rivers and streams, and a huge aquifer that provides drinking water for more than 1.2 million people, water quality monitoring specialists at the Miami Conservancy District (MCD) in Dayton, Ohio, have their hands full. By YSI
Advanced On-Line Instrumentation Helps DAF Systems Lower Costs
Many food processors use dissolved air flotation (DAF) to remove fats, oils and grease (FOG) and suspended solids from their wastewater streams.
Determination Of Pesticide Residues In Honey, By An Automated QuEChERS Solution
The QuEChERS (Quick-Easy-Cheap-Effective-Rugged-Safe) sample extraction method was developed for the determination of pesticide residues in agricultural commodities.
Water Distribution System Security Monitoring
Ensuring safe drinking water doesn’t end when the water leaves the water treatment plant. Protecting the safety and security of drinking water from accidental or intentional contamination within the distribution system is becoming increasingly important.
Monitoring Aromatic Organics For Optimizing Coagulation
With the increasing awareness about the negative effects of organics within the water and wastewater treatment process along with increasingly strict water quality regulations, the need for more effective organics removal is becoming more important.
Application Note: Continuous Monitoring Of Drinking Water Provides Assurance Of Safety A water utility in Ohio wanted to learn more about the variability of water quality parameters such as pH, ORP, turbidity, and chlorine. Previously, most of these parameters had been measured by spot sampling protocols with only a few measurements during a daily period. In order to more accurately assess the water variability, the utility used a YSI 6920DW Drinking Water Multiprobe
DRINKING WATER TREATMENT PRODUCTSMore Drinking Water Treatment Products
LATEST INSIGHTS ON DRINKING WATER TREATMENT
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.
The Current State Of Perchlorate
Perchlorate is a chemical most commonly used in rocket fuel, flares, and fireworks, but potential federal regulation of its presence in drinking water may bring utilities down to earth.
Innovative Options For Brackish And Wastewater RO Concentrate Disposal
In an era of inspired recycling and enviable reuse of industrial and manufacturing byproducts, the water treatment industry continues to search for innovative disposal options or, better yet, viable secondary use options for high TDS (total dissolved solids) RO (reverse osmosis) concentrate streams
What The EPA Health Advisory On Algal Toxins Means For You
On May 6, the U.S. EPA issued a health advisory regarding elevated levels of algal toxins in drinking water. Following a cyanotoxin crisis that resulted in a water ban in Toledo last August, the agency recommended specific drinking water values for microsytin and cylindrospermopsin in advance of the summer bloom season.
The Near Future Of Strontium Regulation
In an effort to further protect the quality of drinking water, the EPA plans to elevate strontium from its third contaminant candidate list (CCL3) and mandate its treatment.
Nanofiltration: The Up-And-Coming Membrane Process
The forgotten child of the membrane family has plenty of capabilities and potential. Learn the factors and applications that are increasing the popularity of nanofiltration.
DRINKING WATER TREATMENT NEWS
DRINKING WATER TREATMENT VIDEOSMore 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.