water treatment disinfection Articles
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Nitrification in Monochloramine-Treated Water Systems
A Water utility based int the Midwest USA uses Monochloramine treatment to treat their two surface water treatment plants to disinfect raw water and establish residual disinfectant prior to discharge to their distribution system. Like most water utilities that use Monocholoramines, a common area of concern is nitrification. Residual ammonia from chloramines can serve as a food source for ...
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Do Not Make Ozone Generator Decision Until You Read This!
Secrets - Most Ozone Generator Manufacturers Do Not Want YOU To Know. Here is something that is going to shock you a bit. A few weeks ago, I received a call from Bob, an engineer responsible for water treatment and disinfection at a large industrial plant. He was horrified, as he had just purchased two 60 g/h ozone generators for $15,000 from a ozone generator manufacturer and they did not work. ...
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Electrochemical disinfection of secondary wastewater treatment plant (WWTP) effluent
In this work the electrochemical disinfection of the effluent of a secondary wastewater treatment plant is investigated. In the experimental work, performed on-site with real effluents of the WWTP located in Vuelta Ostrera (Cantabria, Spain), boron-doped diamond (BDD) electrodes were employed. The initial concentration of E. coli in the effluent of the WWTP varied in the range ...
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Calibrating an optimal condition model for solar water disinfection in peri-urban household water treatment in Kampala, Uganda
In low income settlements where the quality of drinking water is highly contaminated due to poor hygienic practices at community and household levels, there is need for appropriate, simple, affordable and environmentally sustainable household water treatment technology. Solar water disinfection (SODIS) that utilizes both the thermal and ultra-violet effect of solar radiation to disinfect water ...
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Organophosphate Pesticide Degradation Under Drinking Water Treatment Conditions
Chlorpyrifos (CP) was used as a model compound to develop experimental methods and prototype modeling tools to forecast the fate of organophosphate (OP) pesticides under drinking water treatment conditions. CP was found to rapidly oxidize to chlorpyrifos oxon (CPO) in the presence of free chlorine. The primary oxidant is hypochlorous acid (HOCl); thus, oxidation is more rapid at lower pH (i.e., ...
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Factors involved in sustained use of point-of-use water disinfection methods: a field study from Flores Island, Indonesia
Many scientific studies have suggested that point-of-use water treatment can improve water quality and reduce the risk of infectious diseases. Despite the ease of use and relatively low cost of such methods, experience shows the potential benefits derived from provision of such systems depend on recipients' acceptance of the technology and its sustained use. To date, few contributions ...
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Effect of ozone on secondary effluent treatment for reuse in agriculture
The results of secondary effluents ozonation from domestic sewages treatment plants in Havana, Cuba are presented. The ozone effect on some physico-chemical parameters was determined. The ozone gas concentration is the parameter, which exerts the greatest influence on the ozone transferred. The results indicated that ozonation of secondary effluents is a safe disinfection alternative for ...
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UV Technologies for Chlorine Removal from Water
Chlorine is widely used in water treatment as a disinfection and oxidizing agent. However, the reaction of free chlorine in water leads to the generation of undesirable by-products and have harmful effects on industrial processes. In high purity water systems, the presence of free chlorine in water may result in the deterioration of treatment units such as ion exchange beds and RO membranes. ...
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Disinfection and Sanitization for Residential Water Treatment: Part 3
In this 5 part series we will discuss a very important and at times overlooked area of residential water treatment, the Disinfection and Sanitization for Residential Water Treatment. The information in this series was prepared by Larry Zinser of Master Water Conditioning. Larry Zinser is a sales engineer with Master Water Conditioning. Following an education with a Bachelor's Degree in ...
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United States EPA Method 415.3
Abstract In order to ensure drinking water is safe for human consumption, water treatment plants often add disinfectants to drinking water. The disinfectants, such as chlorine, protect drinking water from pathogens, disease causing organisms, but can react with naturally occurring materials in the water to form byproducts that may be harmful for consumption. The United States Environmental ...
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Variations of disinfection by-product levels in small drinking water utilities according to climate change scenarios: a first assessment
In Québec, Canada, shifts in climate patterns (i.e., rainfall increase) could have consequences on source water quality due to the intensification of surface/groundwater runoff contamination events, leading to a decline in drinking water treatment efficiency and ultimately disinfection by-products (DBPs) formation following treatment. To assess the impacts of climate change (CC) scenarios on ...
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ROS improves ozone system in a surface water treatment plant - Case Study
Jenfitch, Inc based in Walnut Creek, CA has developed a new oxidant that is effective at lowering TOC, reducing THM’s and HAA5’s, eliminating T & O (taste and odors), effective at controlling HAB’s (harmful algal blooms), improve coagulation & flocculation, eliminate biofilm formation in the distribution systems, and improve the effectiveness of your primary ...
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Cost Benefits of Process Water Disinfection via UV Light Sterilizer Technology
Water is a substance that has many unique properties unlike any other fluid in the world. It is certainly a vital component of the survival of organic life, but it is also extraordinarily useful in industrial, municipal, and commercial processes. Process water makes up a significant portion of water use in the commercial and industrial sectors and depending on the industry and site, can be used ...
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Huwasan
Huwasan TR50 (SuPerSil) – THE BACKGROUND Before looking at Huwasan TR50 (SuPerSil) and other similar silver stabilised Hydrogen peroxide products, it is important to note that while chlorine dioxide can be produced using different techniques, the end product is always chlorine dioxide. When discussing silver stabilised hydrogen peroxides, each product is unique. the technology into ...
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Australian Drinking Water Guidelines
The Australian Drinking Water Guidelines (ADWG) were developed to provide regulations that ensure drinking water safety. Drinking water under the guidelines is described as water used for human consumption, and it is obtained through a tap or food made using water. It also ensures that water quality meets the intended purpose of use. The National Health and Medical Research Council (NHMRC) works ...
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Disinfection and Sanitization for Residential Water Treatment: Part 2
In this 5 part series we will discuss a very important and at times overlooked area of residential water treatment, the Disinfection and Sanitization for Residential Water Treatment. The information in this series was prepared by Larry Zinser of Master Water Conditioning. Larry Zinser is a sales engineer with Master Water Conditioning. Following an education with a Bachelor's Degree in ...
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Ozone Production, Concentration, and Solubility
Ozone generator performance is commonly referred to in concentration (% wt or g/m³) and ozone production (g/hr). Both measurements are critical. But what do they mean? How are ozone production, concentration, and Solubility ...
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Advanced Oxidant using Mineral Oxychloride Technology
Jenfitch, based in Walnut Creek, California, has developed a new oxidant that is effective at lower TOC, reducing THM’s and HAA5’s, eliminating T & O (taste and odors), effective at controlling HAB’s (harmful algal blooms), effective at controlling zebra mussels and other shellfish encrustation, effective at improving coagulation & flocculation, eliminating biofilm ...
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A new look at Bromine - a potential sleeping giant?
The daunting challenge By now, most in the international drinking water industry are very familiar with the UN Millennium Development Goal to reduce by half the number of people lacking daily access to safe drinking water by 2015 and that the majority of the world’s 1.1 billion in greatest need are living in developing and under-developed countries. In some of the developing world’s ...
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Ozone water treatment FAQs
1. What is ozone water treatment, and how does it work? Ozone water treatment purifies and disinfects water using ozone gas (O3) generated on-site using specialized ozone generators. Ozone consists of three oxygen atoms and acts as a powerful oxidizing agent. When Ozone is injected into the water, it reacts with contaminants through chemical oxidation. This reaction effectively neutralizes ...
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