ozone drinking water Articles

  • Drinking Water Aesthetics Improve with Ozone Treatment

    High quality water sources for municipal use are dwindling, forcing utilities to seek alternate water sources. Many times, aesthetics are the only problem preventing the use of these alternate water sources for potable purposes. Although typically used as a disinfectant, ozone offers municipal water purveyors the benefits of being the strongest commercially available oxidizing agent (Table 1). ...

  • 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 ...

  • Rostock Water Works, Rostock, Germany: Drinking Water Ozone Plant

    Ozone is the ideal agent for treating and disinfecting drinking water. The advantages of ozone and the improvement in the quality of the water after ozonation are evident at the Rostock Drinking Water Works following its modernisation. By specifying the new Advanced Technology from Ozonia, the Rostock Water Supply Company became the first user in Germany of high-tech ozone generation equipment ...

  • Transformation products of pharmaceutically active compounds during drinking water ozonation

    Ozonation and ozone-based advanced oxidation processes have been shown to be effective in the oxidation of several pharmaceutically active compounds (PhACs) routinely detected in surface waters. Under typical operating conditions of these processes, most of the parent compound oxidized is expected to lead to the formation of transformation products (TPs). For a target ozone exposure, the ...


    By IWA Publishing

  • Optimization of the ozone dosage at the drinking water treatment plant of Kluizen

    De Watergroep, a Flemish drinking water utility, aims to optimize the ozonation process at the Kluizen surface waterworks in order to obtain sufficient inactivation of pathogenic micro-organisms while minimizing the formation of bromate. In literature, the inactivation of micro-organisms is described as a first order process in ozone exposure (ozone concentration multiplied by exposure time or ...


    By IWA Publishing

  • Ozone for Waste water Treatment

    Ozone has been used for many years to treat pathogens such as bacteria and algae in water for applications such as drinking water supplies and air conditioning system cooling water. More recently, most water bottlers have adopted ozone. Ozonated water for treatment of fruit, vegetables, fish, etc. in the U.S. awaited the GRAS approval. Now that has happened, and projects are emerging everywhere. ...


  • Ozone Brings Better Bottled Water

    The proliferation of bottled beverages worldwide and an increased awareness of consumer health issues have beverage bottlers rethinking how to keep their liquids safe for consumption. One problem they face is the need to deliver a product that is free of bacteria, to provide extended shelf life and product quality. Ozone has quickly become the disinfectant of choice among water bottlers ...

  • The comparative study of trihalomethanes in drinking water

    Abstract: The purpose of this study was to assess exposure of four trihalomethanes (chloroform, bromodichloromethane, dibromochloromethane and bromoform) in drinking waters of Okinawa Island and Samoa. Trihalomethanes compounds were determined in the drinking water samples that were collected from the selected consumption sites and treatment plants of both Okinawa and Samoa in 2003-2004. The ...

  • Application of ozonation in drinking water disinfection based on an environmental management strategy approach using swot method

    Disinfection is the destruction of pathogenic microorganisms. It does not apply to nonpathogenic microorganisms or to pathogens that might be in the spore state (McCarthy and Smith, 1974). Chlorine is the most widely used disinfectant because it is effective at low concentration, is cheap and forms a residual if applied in sufficient dosage. It may be applied as a gas or as a hypochlorite, the ...


    By University of Tehran

  • Optimization and mechanism of copepod zooplankton inactivation using ozone oxidation in drinking water treatment

    Bench-scale experiments were carried out to optimize ozone oxidation conditions for copepod inactivation by response surface methodology. Independent variables were ozone dosage (1, 3 and 5 mg/L), contact time (5, 15 and 25 min) and organic matter concentration (2, 5 and 8 mg/L). The results showed that all independent variables significantly influenced copepod inactivation rate. The observed ...


    By IWA Publishing

  • Ozonation catalyzed by iron silicate for the degradation of o-chloronitrobenzene in drinking water

    This paper aimed to reveal the effectiveness and the mechanism of catalytic ozonation in the presence of iron silicate for the degradation of o-chloronitrobenzene (oCNB). Experimental results show that catalytic ozonation in the presence of iron silicate could substantially enhance oCNB removal efficiency compared with ozonation alone, and that the adsorption of ...


    By IWA Publishing

  • “Ozone” and “GAC filtration” synergy for removal of emerging micropollutants in a drinking water treatment plant?

    Ozonation plays an essential role in water disinfection to inactivate viruses, bacteria and some parasites (Giardia). Ozone treatment rates to attain disinfection goals also result in oxidation reactions of emerging pollutants. Pharmaceuticals–except Ciprofloxacin–are very reactive to ozone: they are removed as early as the transfer compartment outlet even at an ozone treatment rate ...


    By IWA Publishing

  • Trihalomethane formation in ozonated and chlorinated surface water

    Abstract The relatively recent discovery of disinfection by-products has driven the main regulatory organisms to set maximum contaminant levels for certain substances in drinking water. Trihalomethanes can be deemed as the most important group of by-products in chlorinated surface waters. The present work has focused on trihalomethane formation in a full-scale water treatment plant. We studied ...


    By Springer

  • Unique Ozone and Ultraviolet Water Treatment System

    Euroby Ltd, the sludge treatment specialists, are pleased to announce the signing of an agreement to be the sole UK and Ireland distributor for the unique UVOX range of water treatment  systems.UVOX, as the name suggests, uses a combination of Ultraviolet and Ozone to treat infected and polluted water.Its uniqueness stems from its novel method of first producing ozone by irradiating air with a ...


    By Euroby Limited

  • Genotoxicity and effects of nanosilver contamination in drinking water disinfection

    This study was conducted to examine the genotoxicity and the influence of silver nanoparticles (AgNPs) contamination when drinking water is exposed to five different disinfection treatments: chlorine, chlorine dioxide, ozone, ozone/chlorine and ozone/chlorine dioxide. Experiments were conducted with water samples of different chemical composition, from three water supply systems in Croatia. ...


    By IWA Publishing

  • Effect of ion (Al, Fe and Zn) co-doped TiO2 nanotubes on photocatalytic degradation of humic acids under UV/ozonation for drinking water purification

    O3/UV/TiO2 was used to effectively decompose humic acids (HAs) in drinking water. A series of Al-doped, Fe-doped, Zn-doped and co-doped TiO2 nanotubes were successfully synthesized by a hydrothermal method. According to the characterization of ion-doped TiO2 nanotubes, Al3+ and Fe3+ ions occupied substitutional positions in the crystal lattice, ...


    By IWA Publishing

  • Improving the biological stability of drinking water by ion exchange

    To guarantee a good water quality at the consumer’s tap, natural organic matter (NOM) should be (partly) removed during drinking water treatment. The objective of this research is to measure the effect of NOM removal by ion exchange on the biological stability of drinking water. Experiments were performed in two lanes of the pilot plant of Weesperkarspel in the Netherlands. The lanes consisted of ...


    By IWA Publishing

  • Using Ozone Disinfection for EDC Removal

    Clark County Water Reclamation District (CCWRD) serves the suburban area in and around the city of Las Vegas. The Las Vegas Valley is served by three treatment plants, which all discharge to the Las Vegas Wash. The wash empties into the Las Vegas Bay of Lake Mead. Lake Mead is also the source of drinking water for the Las Vegas Valley. In 1996 USGS reported symptoms of estrogen exposure in carp ...

  • Utilizing UV, ozone & AOP technologies for municipal, industrial & waste water treatment

    ESCO International Solutions & Technologies provide a unique portfolio of technical expertise and equipment, specializing in Ozone, UV and Advanced Oxidation Processes (AOP) for water, gas effluent & Odour treatment. Adapting to strict user guidelines and customer focused design means ESCO International systems are reliable and delivers high water purification standards. As conventional ...


    By ESCO International

  • Vulnerability of Quebec drinking-water treatment plants to cyanotoxins in a climate change context

    Cyanobacteria are a growing concern in the province of Quebec due to recent highly publicised bloom episodes. The health risk associated with the consumption of drinking water coming from contaminated sources was unknown. A study was undertaken to evaluate treatment plants' capacity to treat cyanotoxins below the maximum recommended concentrations of 1.5 μg/L microcystin-LR (MC-LR) and the ...


    By IWA Publishing

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