drinking water system Articles
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Analysis of trace metals in drinking water with the optima 7000 DV ICP-OES
With the development of mining, smelting and other industrial activities, heavy metals are increasingly being found in freshwater sources which can pose severe threats to human and environmental health. Pollution by heavy metals (such as Cd, Pb, etc.) not only affects the productivity of crops, but also the quality of the atmosphere as well as water bodies and threatens the health and life of ...
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Quantitative analysis of microbial contamination in private drinking water supply systems
Over one million households rely on private water supplies (e.g. well, spring, cistern) in the Commonwealth of Virginia, USA. The present study tested 538 private wells and springs in 20 Virginia counties for total coliforms (TCs) and Escherichia coli along with a suite of chemical contaminants. A logistic regression analysis was used to investigate potential correlations between TC ...
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How to Deal with Arsenic in Drinking Water
Thanks to recent developments in technology, daily drinking water undergoes a rigorous treatment process for water to be consumable. This is because most ground and natural river waters have a chemical in them called arsenic. Arsenic is a metallic chemical element that is found commonly among rocks and sulfur in the Earth’s crust. Arsenic is known for getting into your drinking water from ...
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What is Sustainable Flocculation and What are Sustainable Flocculants?
What is Sustainable Flocculation? In most standard drinking water and wastewater treatment systems, there is a flocculation process that is used to reduce the concentrations of solids within the effluent stream. This particular process makes use of substances that aid in the clumping together of suspended particles among other contaminants in a clarifier system. Sustainable flocculation ...
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Case histories of using tin technology to control corrosion in water systems
Stannous chloride is an alternative corrosion control in aqueous systems. Stannous chloride’s effectiveness as a better corrosion inhibitor has been demonstrated in both municipal drinking water and industrial cooling water applications and its use has a reduced impact on rivers and streams. Orthophosphate and other phosphate compounds are the most common treatments for reducing corrosion ...
By AS Inc
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Humanitarian Kiosk Water Treatment- Haiti - Case Study
Challenge A leading provider of safe drinking water to Haiti's under served communities through water kiosks had several water quality issues to deal with upon implementing their pilot program of 10 water kiosks. There was discussion of using surface water or deep well bore water, however, both were unsuitable for drinking water purposes due to microbiological and mineral contamination. ...
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How does our nitrate removal system differ from reverse osmosis (RO) systems?
Reverse osmosis (RO) systems are the workhorse of the drinking water purification market. They are extremely effective in separating water impurities above a certain size (molecules or particles slightly large than a water molecule are filtered or removed). So, does RO eliminate or reduce nitrate? The answer is no. Some RO membranes will remove the nitrate molecule from the incoming water and ...
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What is Hexavalent Chromium?
The dangerous compound made famous by the movie Erin Brockovich can occur naturally or through industrial pollution Hexavalent chromium, a toxic compound sometimes found in water, is a carcinogenic form of the metal chromium in an oxidation state. It’s also known as chromium-6 or Cr (VI). It’s both odorless and tasteless, and it can be found naturally in rocks, soil, and plants. It ...
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Six top factors to consider when selecting a flow meter
Water utilities rely on accurate and dependable flow measurement for critical process controls. Regulatory agencies also require flow monitoring and reporting, with specific accuracy limits. Flow metering technology is continually improving, and a variety of meter types and styles are available. Each flow meter application is unique, and flow meter selection should not be based on “low ...
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Project profile - uranium treatment system Middletown Springs Elementary School Vermont
Background The Middletown Springs Elementary School in Vermont is located in an area of the U.S. very susceptible to the formation of naturally-occurring uranium. Due to the high levels of uranium detected in the well water serving the School, it was placed on a “Do-not-Drink Advisory”. AdEdge was contacted by Otter Creek Engineering in June 2009 to assist the School in providing a ...
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Project profile - Orchard Highlands USEPA arsenic treatment demonstration Goffstown, New Hampshire
Background In 2004 AdEdge Technologies Inc. (AdEdge) was selected to implement six fullscale arsenic treatment demonstration projects as part of the USEPA Office of Research and Development arsenic research program (Round 2). These six sites were in addition to three USEPA Round 1 demonstration sites awarded to AdEdge in 2003. The purpose of the research effort is to provide information to ...
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Long Lake Colony Case Study
Long Lake Colony Farm is an 1,800-head swine operation located in Wetonka, South Dakota that uses a 25,000 gallon per day capacity well-water system. Preliminary testing of the system showed elevated bacteria levels in the farm’s water. The water quality also contributed to clogged water lines in the animal drinking system. The bacteria and water line issues resulted in strep problems in ...
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Decoding the AdEdge treatment matrix
U.S. drinking water utilities come up against a variety of water quality issues. From aesthetic issues to naturally occurring contaminants and contaminants resulting from industry processing, no water source is without problems. Contrarily, many of them have co-occurring contaminants, which complicates the treatment process. Although there is no single treatment solution that will successfully ...
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Specialized systems for offshore oil platforms
Lifestream provides desalination systems to meet the complex needs for water on oil drilling platforms. Specialized features provide flexibility to the operation of the system as well as safety. When planning an installation, the end user can choose to add the features shown to the standard R/O system. Hazardous Location Requirements Systems are built to Class 1, Group B, Division 1 standards ...
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Saudi Arabia’s National Water Company Increases Water Storage
In 2012 the National Water Company (NWC) of Saudi Arabia undertook the enormous project of developing 43 wells and 46 water purification stations in 27 separate locations to provide sustainable potable water systems near Riyadh. To accomplish this task in a short six-month timeframe, contractors around the world were brought in to provide the necessary pieces of infrastructure required to build ...
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V-Cone differential-pressure meters: accuracy to go with the flow
When space is tight and straight-run piping is at a premium, V-Cone® differential pressure (DP) meters (Figure 1) are an excellent choice — especially where the potential for turbulence raises metering accuracy issues with other conventional meter styles. This article describes how to satisfy some challenging water infrastructure applications with V-Cone meter accuracy at a low ...
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Drought Diminishes Not Just Water Quantity, but Quality
As arid conditions become more common, customized water treatment systems will be needed Droughts that have plagued much of the world in recent years have also taken a toll on the quality of available water. Many water systems already have been tested by drought, but experts say exponentially more systems will soon need to prepare for the challenge. Degradation of water quality is caused by a ...
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Solutions for Safe Drinking Water Through Biological Water Treatments
Most people across the U.S. expect to turn on their faucets and have immediate access to clean drinking water. The truth is, it wasn’t until 1974 that Congress passed the Safe Water Drinking Act with the goal of regulating the nation’s public water supply. Over the years, the SWDA has been amended to include water sources as well, such as rivers, lakes, springs and groundwater wells ...
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How seawater desalination can be helpful for coastal municipal sectors?
Water is the vital component of life! Water consumption is increasing day by day for the growing usage of water in industries as well as urban areas. Growing population in the coastal areas has raised the need of good quality water. For the decreasing availability of good quality water, the smart solution is adapting advanced and innovative technology. Treating the seawater and make it able to be ...
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Condition assessment program continues in North Queensland
Justification of an ongoing condition assessment program can, at times, be difficult for water utilities. However, successful inspections that deliver actionable outcomes on how to manage aging assets make this justification much easier. Certainly that was the case for Mackay Regional Council (MRC) when it engaged the services of Pure Technologies (Pure) to conduct a variety of condition ...
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