municipal drinking water Articles
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Reverse Osmosis System Design
Reverse Osmosis (R.O.) is currently used in various applications ranging from small under the sink drinking water systems to large municipal drinking water applications. The technology is widely used and accepted as it removes both dissolved ionic and organic impurities. This article will focus on the application of reverse osmosis membranes and discuss factors that should be considered for ...
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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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Trihalomethane Removal In Municipal Drinking Water Storage Tanks
There are many, many considerations to take into account when researching and implementing a trihalomethane (THM, TTHM) removal strategy for your drinking water system. It can all get very complex in a hurry. For the sake of this blog article however, we are going to focus only on THM volatilization removal strategies through the prism of water surface area. THM Removal Via Volatilization ...
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Measurement of Ammonia in Municipal Drinking Water for sterilization with Monochloramines
Real-time continuous online measurement system for ammonia Low Initial Procurement Cost compared to competing technologies and offerings No need for chemical feed and rebuilding of sensors Lower Cost of Ownership due to very long sensor lifetime, low maintenance & cleaning requirements for inline, immersion & submersion ion selective sensors Intuitive and easy to use TT-MA analyser ...
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Factors influencing public perception and use of municipal drinking water
Despite more stringent regulations concerning drinking water quality in many countries, the public is increasingly concerned about the safety of municipal tap water. For this reason, acquiring a better understanding of consumer perception of tap water is an important issue for water authorities and utility managers. In this study, water consumption choice and profile were investigated. The case ...
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More efficient alkalisation with ground limestone in groundwater treatment
Most Finnish groundwater must be alkalised before use as municipal drinking water because it is corrosive. The corrosiveness is due to low pH and softness of water. Groundwater also often contains aggressive carbon dioxide (CO2), so there is more free CO2 than is required to keep calcium and hydrogen carbonate in solution. The most popular alkalisation method in the past was addition of sodium ...
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Emergency Rental Solutions for the Effective Treatment of Municipal Drinking Water. Case Study
As specialists in UV disinfection for the municipal drinking water market, atg UV Technology offer a range of mobile, containerised, turn-key UV disinfection plants and standard medium pressure systems. Designed to meet the requirements of the UK DWI (Drinking Water Inspectorate) February 2010 Guidelines on UV Disinfection for Potable Water Supplies, the atg UV Technology design provides a ...
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Examining the emerging environmental protection policy convergence in the Ontario municipal drinking water, wastewater and stormwater sectors
This study examines the governance approaches applying to Ontario's municipal water management activities and observes an environmental policy convergence occurring in two different dimensions: across the drinking water, wastewater, and stormwater aspects of municipal water activities with respect to governance approaches, and federal, provincial, and municipal governments in terms of drawing ...
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Biofilm forming ability of Sphingomonas paucimobilis isolated from community drinking water systems on plumbing materials used in water distribution
Sphingomonas paucimobilis, an oligotroph, is well recognized for its potential for biofilm formation. The present study explored the biofilm forming ability of a strain isolated from municipal drinking water on plumbing materials. The intensity of biofilm formation of this strain on different plumbing materials was examined by using 1 × 1 cm2 pieces of six different pipe materials, i.e. ...
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Investigation and control of a Norovirus outbreak of probable waterborne transmission through a municipal groundwater system
During March 2011 an outbreak of gastroenteritis occurred in Santo Stefano di Quisquina, Agrigento, Sicily, Italy. Within two weeks 156 cases were identified among the 4,965 people living in the municipality. An epidemiological investigation was conducted to characterize the outbreak and target the control measures. A case was defined as a person developing diarrhea or vomiting during February ...
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Importance of Industrial & Commercial Water Filters in Industry!
Industrial water filters are a significant part of the industrial process as they are used for many types of applications in the industry. These filters help in increasing the efficacy of the Industrial operations. Industries employ water filters for a variety of applications including institutional, municipal and industrial. Industrial water filters can sustain any weather or climate condition ...
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REX Evaluation Guide
REXTM (Real-timeElementalX-ray Fluorescence System) is the only instrument capable of unattended real-time elemental analysis of dissolved metallic contents in fluids using X-ray fluorescence with low parts-per-billion (ppb) sensitivity. Important applications exist for the following industries, among others: Municipal drinking water supply Chemical processing industry Mining and petroleum ...
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Fluorescent microspheres as surrogates to assess oocyst removal efficacy from a modified slow sand biofiltration water treatment system
There has been a resurgence of interest, technological advancement, and implementation of biologically active slow sand filtration technologies for small-scale potable water treatment in North America. Modelling the fate and transport of pathogenic microorganisms is vital to assess technological safety and for licensing, permitting and regulatory validation. The efficacy of a modified slow sand ...
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Shining a new light on de-chlorination - Case Study
In collaboration with a UK Utility company, atg UV constructed an independently reviewed de-chlorination test rig and trial at its Lancashire headquarters in January of this year. Barry Hopton of atg UV Technology discusses with WWT how portable UV systems can provide a more efficient and proven alternative to de-chlorination of drinking water. The Water Industry is Changing its ...
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VSEP takes reverse osmosis where it has never been before, further concentrating RO reject (brine) streams to increase overally recovery to 99%.
Conventional spiral wound membrane systems using reverse osmosis or nano-filtration membranes are increasingly being used to treat well water from underground sources to supplement local drinking water supplies. Many of the remaining underground water sources are 'Brackish' water sources where the dissolved solids can be 5,000 mg/L or even higher. One of the difficult engineering aspects of ...
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Municipal water services in Guatemala: exploring official perceptions
In Guatemala, water services are frequently interrupted, water pressure is inadequate and tap water is often unsafe to drink. Water providers face the challenge of maintaining water systems and improving water services to provide reliable and safe drinking water. Understanding the perspectives of government officers may help in finding solutions to overcome this challenge. Semi-structured ...
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Free ammonia NH3-N (Total Nitrogen) measurement in municipal water districts - Case Study
Real-time continuous online measurement system for ammonia Low Initial Procurement Cost compared to competing technologies and offerings No need for chemical feed and rebuilding of sensors Lower Cost of Ownership due to very long sensor lifetime, low maintenance & cleaning requirements for inline, immersion & submersion ion selective sensors Intuitive and easy to use Rosemount 1056 ...
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Benefits of Anthracite Carbon Media for Municipal Potable Water Treatment Applications?
Treating water to be of potable water quality requires fairly considerable treatment based on initial water quality. Many tend to jump straight to thinking about more technologically advanced treatments like reverse osmosis and the similar. Of course, there is a bit more involved in drinking water treatment for municipalities. However, anthracite carbon media has been used extensively in ...
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Who Says Charity has to Cost Money?
It is a rare and delightful occurrence when altruistic motives and the quest for profit coincide in such a way that following one begets the other. The reuse and recycling of waste water is just such a project, especially in industrial applications replacing municipal potable drinking water supplies. When one considers the fact that more than a billion people in the world are without adequate ...
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Zirconium and chitosan coagulants for drinking water treatment – a pilot study
Scientists continuously search for alternative coagulants that would be able to outperform traditionally used aluminium (Al) and iron (Fe). Use of a novel metal coagulant zirconium (Zr) has been associated with enhanced organic matter reduction. On the other hand, eco-friendly non-metal solutions, such as chitosan, can provide non-toxic sludge and water with no metal residue. In fact, Zr and ...
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