drinking water operator Articles
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Testing Made Simpler, A laboratory informatics solution from Thermo Fisher Scientific aims to help water system labs reduce tedious labor, prevent errors and simplify compliance
Laboratory Information management systems (LIMS) have been around for about 25 years, and many water systems use them. The challenge often Is to configure the LIMS for the specific needs of a drinking water operation. Now Thermo Fisher Scientific offers a LIMS preconfigured to help users comply with water and environmental regulatory guidelines and requirements. It Is built on the functionality ...
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Leakage fault detection in district metered areas of water distribution systems
Fault tolerance and security in drinking water distribution operations are important issues that have received increased attention in the last few years. In this work the problem of leakage detection is formulated within a systems engineering framework, and a solution methodology to detect leakages in a class of distribution systems is proposed. Specifically, the case where water utilities use ...
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Assessing irreversible fouling behavior of membrane foulants in the ultrafiltration of natural water using principal component analysis of fluorescence excitation-emission matrices
Natural river water is comprised of different foulant components such as natural organic matter and colloidal/particulate matter. Both individual and combined contributions of these foulant components results in different fouling behaviour. The ability to characterize these contributions that lead to reversible and irreversible membrane fouling would be beneficial for the implementation of ...
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Ageing and Characterization of PES Ultrafiltration Membranes Exposed to Hypochlorite
Polyethersulfone (PES) ultrafiltration (UF) hollow fibers are widely used for drinking water production. During onsite operation, backwashing (brief, high occurrence, low concentration in free chlorine: 10 ppm to 20 ppm) and chemical washing (longer, less frequent, high concentration in free chlorine: 200 ppm to 400 ppm) are applied to PES fibers to ensure their proper functioning. Impact of ...
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Early warning of changing drinking water quality by trend analysis
Monitoring and control of water treatment plants play an essential role in ensuring high quality drinking water and avoiding health-related problems or economic losses. The most common quality variables, which can be used also for assessing the efficiency of the water treatment process, are turbidity and residual levels of coagulation and disinfection chemicals. In the present study, the ...
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Case study Madagascar - independent drinking water solution
Client ADES Solaire, Switzerland (NGO) Location ADES Centre in St. Augustin, Madagascar Introduction The island Madagascar is suffering from a high rate of poverty. Most of the people have no access to clean drinking water. In 2009 ADES and its supporters established a pilot project for the use of renewable energy for electrification in urban and rural areas. The project targets a successful ...
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Success or failure: demonstrating the effectiveness of a Water Safety Plan
The Water Safety Plan (WSP) concept has become a globally recognised and accepted approach to drinking water supply management and operation. Many countries around the world are adopting this proactive, risk-based model for ensuring consistent confidence in drinking water safety, accessibility and affordability. While it is widely accepted that the WSP concept is an appropriate tool for ensuring ...
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Introducing layer of protection analysis for water safety risk assessments
In pursuing their mandate of providing good and safe drinking water, water system operators and asset owners work continuously towards developing and maintaining the trust and confidence of their customers. The goal of developing and maintaining customer trust has led to an increased emphasis in the water sector to explicitly assess and manage risks. In this paper, we introduce Layers of ...
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Utilities expand personnel capabilities with managed SCADA system - Case Study
As the water and wastewater industry faces a shrinking labor source, remote monitoring can fill the experience gap. About one third of water and wastewater utility workers will retire by 2018, according to the 2008 Water Environment Federation report. More than 79 million baby boomers will reach retirement age during the next 10 years. According to a study authored by Jones and Henry Engineers, ...
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Outbreak of acute gastroenteritis due to a washwater-contaminated water supply, Switzerland, 2008
An operating error in a sewage treatment plant led to severe drinking water contamination in a well-defined district of a suburban municipality of Zurich, Switzerland. Despite the alert issued to the local population on the same day advising people not to consume the contaminated water, cases of acute gastroenteric diseases were subsequently observed. Considerable faecal contamination was ...
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How targeted investments by private water can boost public support
A significant number of utilities in smaller regions operating where resources are strained, and where the daily business of water treatment can be exceedingly expensive, have turned to privately owned companies to manage their drinking water and wastewater operations. For municipalities, this provides extensive expertise and economies of scale that they typically couldn’t get on their own. ...
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AQSur provides quality water with a new 24/7 service to 25,000 customers in Colombia - Case study
The utility AQSur now supplies uninterrupted, quality drinking water to six municipalities in Colombia. The project combined billing and collection services, customer care, and O&M to boost water efficiency and achieve financial sustainability. Challenges of the project AQSur aimed to improve the supply service and water quality, boosting efficiency and increasing the ROI of its ...
By Idrica
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3E Helps Amarillo’s Osage Water Treatment Plant Wrangle its MSDSs
Background Located in the center of the Texas Panhandle, Amarillo offers all the conveniences of big city living in a friendly and small town atmosphere. The city’s 180,000 residents rely on the Osage Water Treatment Plant to provide them with clean, potable water. The plant operates on a 24 hour a day schedule, and has a treatment capacity of seventy million gallons of water per day. ...
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Regulatory Update: Focus on PFAS
New rules are set to tighten controls on PFOAs and other members of the PFAS family of chemicals internationally. Per- and polyfluoroalkyl substances (PFAS) are a huge group of over 4,000 man-made chemicals, which, due to their oil and water resistance, have been used since the 1940s in a host of industrial and consumers goods. Highly water-soluble and mobile in the environment, they have been ...
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Recent operational experiences of FILMTEC™ NF270 membrane in Europe
Nanofiltration (NF) is an attractive technology for potable and industrial water treatment because NF operates between ultrafiltration (UF) and reverse osmosis (RO) membranes. NF is designed to remove a high percentage of organic contaminants (humic acids, pesticides, color bodies) while passing a medium to high percentage of salt. Compared to UF membranes, the NF product water quality is ...
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Searcy Water Utilities Adopts Ultrasound Technology to Keep Its Facilities Cleaner
The application of ultrasound is keeping facilities cleaner longer, saving SWU time and money. One way to set up a municipal water utility is to treat water at the intake and then run it through open basins for conditioning and ultimately filtration. There’s a routine with keeping such installations clean. Biofilms tend to grow on basin walls, then peel off in sheets that gum up the filters ...
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Dynamic Water Balance Model - Case Study
Client: Dynamic Water Balance Model Location: Monterey, California Solutions: Drinking Water, Wastewater, Water Resources, Water Reuse ...
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Many Indian Cities May Soon Run Out of Water
National policy commission is guiding states with sustainable development goals The Indian government’s prestigious National Institution for Transforming India policy commission (NITI Aayog) has released a report that warns that as demand continues to skyrocket, 21 Indian cities will run out of groundwater by 2020 without adequate countermeasures. By 2030, demand is expected to increase ...
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When Speed and Accuracy Count: Enwave Houston and Oklahoma City Successfully Deploy Sahara Tool for Leak Inspection Projects in Record Time
Sahara technology is winning accolades from satisfied owners and operators of buried infrastructure the world over. In North America, two recent projects demonstrate the benefits of using this in-line tethered tool for critical leak detection surveys, especially when speed and accuracy are paramount. Sahara is the first tool designed for live inspection of large diameter mains, and one of the ...
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Potable Water Storage Tanks Need Mixing
There are more than 50,000 municipal water systems in the United States and most of these systems rely on water towers, above-ground, and below-ground tanks to store their treated potable water. Many operators rely on mixing via normal cycling of water in and out of the tank to limit water age and deterioration of disinfectant chemicals. This reliance on "passive mixing" is not enough in most ...
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