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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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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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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The influence of city water consumption on the water balance and quality of drinking water supply with implications for altered operating rules
In the period 1990–2006, the decrease in water consumption of Tallinn, the capital of Estonia, determined both the input and output of the water balance of Lake Ülemiste, the drinking water reservoir of the city as well as its hydraulic retention time (HRT). In 2006, the city's water consumption accounted for only a quarter of that in 1990.The role of regulated inflow in the water balance ...
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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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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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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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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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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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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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ANDalyze product Brochure
One of the most important discoveries in the last decade is that DNA/RNA are not only materials for genetic information storage and transfer, but also catalysts for a variety of biological reactions, and thus called catalytic DNA/RNA, (deoxy)ribozymes, or DNA/RNAzymes. Because metal ions play essential roles in the structure and function of DNAzymes, the study and application of these new ...
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Defluoridation of drinking water using metal embedded biocarbon technology
The water that circulates in contact with fluorinated ores is particularly rich in fluoride. The beneficial and the harmful effects of fluoride consumption are well documented. The dental and skeletal fluorosis is the widespread harmful effects of a long consumption of fluoride. WHO recommended level of fluoride in drinking water is 1.5 mg/L. Different methods have been tested for defluoridation ...
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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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Valdelentisco SWRO Desalination Plant - Case Study
Location: Rambla de Valdelentisco ‐ Cartagena (Murcia ‐ Spain) Capacity: 140,000m3/day Raw Water: Seawater. TDS = 38,500mg/L Use: Drinking Water and Irrigation Year of Operation: 2008 Products: Memline Duplex Stainless Steel Couplings Services: RO Piping Connection Material: Duplex SS Gasket: EPDM with NSF certificate Size:1.5" Pressure: 1200psi In 2008 Europe’s ...
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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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Virus removal retention challenge tests performed at lab scale and pilot scale during operation of membrane units
The determination of the virus retention capabilities of UF units during operation is essential for the operators of drinking water treatment facilities in order to guarantee an efficient and stable removal of viruses through time. In previous studies, an effective method (MS2-phage challenge tests) was developed by the Water Research Center of Veolia Environnement for the measurement of the ...
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ANDalyze Case Study - Uranium in Ground Water
Good Water Company (Testing Service) Groundwater samples were submitted by well owners from different regions of New Mexico (around Espanola region) in a water clinic sponsored by the Good Water Company. Problem/Task The groundwater in this region is contaminated with natural uranium, often above the EPA maximum contaminant level of 30 ppb uranium. ANDalyze Solution These samples were tested ...
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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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Drinking Water Standards
The most important point of departure for drinking water standards is the World Health Organisation Guidelines for Drinking Water Quality. These are widely used throughout the world with the exception of parts of North America. WHO’s Guidelines have evolved over a period of 50 years from standards to guidelines, reflecting the fact that they have no legal force. The WHO emphasises that it ...
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The South Australian Safe Drinking Water Act: summary of the first year of operation
The Safe Drinking Water Act 2011 was introduced in South Australia to provide clear direction to drinking water providers on how to achieve water safety. The Act requires drinking water providers to register with SA Health and develop a risk management plan (RMP) for their water supply that includes operational and verification monitoring plans and an incident notification and communication ...
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