drinking water facility Articles
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Validation of USEPA Method 524.2 Using a Stratum PTC and the New AQUATek 100 Autosampler
Abstract Automation is the key to increasing laboratory productivity and minimizing costs. It is equally important to prove that the changes in technology to achieve these results may be done without sacrificing sample integrity or data quality. The AQUATek 100 is a new vial autosampler which features many new benefits to help increase productivity, minimize carryover, and provide more ...
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Influence of density flow on treated water turbidity in a sedimentation basin with inclined plate settler
The removal efficiency of particulate matter from a sedimentation basin with an inclined plate settler in drinking water treatment facilities is sometimes reduced by density flow caused by temperature increases in the raw water. In this study, the structure of the density flow and its prevention are investigated by means of three-dimensional computational fluid dynamics (CFD). The results of ...
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THM Prevention & DOC Remova Drinking Water - Case Study
Cuf was sole sourced for a drinking water facility as it had unmatched purification performance and was the only viable solution for the trend of stricter regulations for reductions in color, THMs, and liquid waste. Cuf achieves all of these water purification requirements and provides an essentially Zero Liquid Discharge solution. A 1 MGD well has been brought online to reduce the demand on its ...
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Meeting the US Environmental Protection Agency Drinking Water Requirements with a UV/Persulfate Analyzer
Abstract The rapid and precise measurement of organic carbon in trace levels of water is of interest to the pharmaceutical, drinking water and environmental industries where regulations restrict the amount of discharge or contamination. Total Organic Carbon (TOC) analysis is considered an effective indicator of organic contamination in water. Since the US EPA set limits on Disinfection ...
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Water Bottling Plant Regina, Saskatchewan, Canada - Case Study
Background The World of Water drinking water bottling facility in central Canada was established, in part, as a private label manufacturer of purified drinking water. The plant was designed to utilize municipally treated potable water supplies with a consistently high level of initial quality. Even with this treated water, World of Water’s customer base expects state-of-the-art treatment ...
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Water Monitoring in drinking water plants - The Comparison Between On-Line TOC Analysis and the Permanganate Oxidation Method
Introduction The role ofthe plants providing water is not restricted to the collection of water from areas where abundantly available and then distribution to the consumer. In reality, it involves a serious commitment to the guarantee of waterwhich is high quality. For this reason, drinking water facilities make use of conditioning plants which are equipped with chemical lab oratories that ...
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Water Trends in security for 2023: Increased protection of infrastructures
In 2021, drinking water facilities located in Tampa, Florida, suffered a cyberattack that sought to poison the population by increasing the amount of sodium hydroxide in the system. In 2020, pumping stations and water management facilities in Israel were targeted by cyberattacks, whilst in 2018, the Swiss city of Ebikon’s water supply received thousands of malware requests. Fortunately, all ...
By Idrica
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How do Carbon Filters Work to Remove Toxic Chemicals in a Drinking Water Supply?
Whether you buy a bottle of water or turn on the faucet at home for a drink, the last thing you want to worry about is that it might be contaminated with bacteria or toxic chemicals. In developed countries and cities that have advanced drinking water treatment facilities set up, they have methods for dealing with those harmful pollutants. It’s the same with bottled water companies. For ...
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Estimating effects of improved drinking water and sanitation on cholera
Demand for adequate provision of drinking-water and sanitation facilities to promote public health and economic growth is increasing in the rapidly urbanizing countries of the developing world. With a panel of data on Asia and Africa from 1990 to 2008, associations are estimated between the occurrence of cholera outbreaks, the case rates in given outbreaks, the mortality rates associated with ...
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International benchmarking network helps utilities improve performance
Untitled Document Water and sanitation utilities throughout the world can benefit from the comprehensive IBNET website, funded by the UK government and the World Bank, that includes performance data from more than 600 utilities in 50 countries. All over the world, water and sanitation utilities are facing challenges to improve performance. These challenges ...
By WRC Ltd
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Case study - City of Montreal upgrade of Atwater and Des Baillets water treatment plants
Sidestream Venturi Injection—Basin Nozzle Manifold Contacting System. Montreal, Quebec, Canada The Problem: In 2001, a water quality audit revealed that two of the largest drinking water plants in the City of Montreal were out of compliance with Quebec’s latest water quality rules. In response to the audit, the city upgraded the 1,400 MLD Atwater and the 1,280 MLD Charles J. Des ...
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Enhancing climate adaptation capacity for drinking water treatment facilities
Conventional water treatment processes (e.g., coagulation, flocculation, sedimentation, and filtration) are widely used for producing drinking water from surface water sources. Transient, gradual, or abrupt changes in source water quality that could compromise treatment effectiveness can be triggered by climate and related meteorological events, accidental or intentional contamination, ...
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Natural ferrihydrite as an agent for reducing turbidity caused by suspended clays
Biologically impaired waters are often caused by the turbidity associated with elevated suspended sediment concentrations. Turbidity can be reduced by the addition of positively charged compounds that coagulate negatively charged particles in suspension, causing them to flocculate. This research was conducted to determine the effectiveness of ferrihydrite, a poorly crystalline Fe oxide, as a ...
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UV Experience for Inactivating Cryptosporidium in Surface Water Plants
Untitled Document The disinfection of pathogenic microbes in drinking water has been largely successful over the last century due to the use of chlorination. However, research conducted in the 1970's revealed that by-products formed during the chlorination process are potentially carcinogenic and that there is a direct correlation between the concentration of ...
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The PWN Water Supply Company North Holland
The PWN Water Supply Company located in the North Holland Province of the Netherlands, uses Trojan UV technology to provide an additional barrier to micropollutants. In addition, the UV system disinfects, inactivating chlorine-resistant pathogenic microorganisms. The drinking water treatment plant, located in Andijk, serves approximately a half a million people and treats up to 4,000 cubic ...
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Development of efficient characterization parameters for activated carbon used in drinking water treatment
In many drinking water treatment facilities with an activated carbon (AC) purification step, polar and hydrophilic molecules are substances of concern. Many of the current test methods for AC do not really reflect AC's adsorption capacity for these substances. To develop a fast and economically reasonable parameter that characterizes AC's ability to remove these compounds, three ...
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Natural ferrihydrite as an agent for reducing turbidity caused by suspended clays
Received for publication October 22, 2008. Biologically impaired waters are often caused by the turbidity associated with elevated suspended sediment concentrations. Turbidity can be reduced by the addition of positively charged compounds that coagulate negatively charged particles in suspension, causing them to flocculate. This research was conducted to determine the effectiveness of ...
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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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UV Experience for Inactivating Cryptosporidium in Surface Water Plants
The disinfection of pathogenic microbes in drinking water has been largely successful over the last century due to the use of chlorination. However, research conducted in the 1970's revealed that by-products formed during the chlorination process are potentially carcinogenic and that there is a direct correlation between the concentration of chlorination by-products and the probability of certain ...
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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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