chlorine dioxide system Articles

  • Chlorine Dioxide gas detection: A comprehensive guide

    Introduction Some years agoago, the bleaching process in the paper industry was changed from using Chlorine (Cl2) as bleaching agent to Chlorine dioxide (ClO2). This was a challenge forThis posed a major challenge to industrial hygienists, as there were no sensors or detectors available that were specific to Chlorine dioxide: There was no sensor technology for gas detectors available that ...

  • Reference: Clever water recycling with chlorine dioxide

    Vapour water at the Crailsheim-Dinkelsbühl dairy is disinfected and then returned to the production process by means of a chlorine dioxide system. The great news is that this significantly reduces water consumption and operating costs. Fewer costs The 160 members of staff at the diary "Milchwerk Crailsheim-Dinkelsbühl eG" process around 130,000 tonnes of milk a year, ...

  • Modelling approach to quickly assess polyethylene ageing by chlorine dioxide in distribution systems

    A prediction model for the life of polyethylene (PE) has been developed as a function of chlorine dioxide concentration and pressure. It can be coupled with an existing hydraulic model covering chlorine dioxide residuals and pressure values in the network. It allows a quick identification of the areas of highest PE failure risk. The methodology is applied successfully to a real distribution ...


    By IWA Publishing

  • Modeling and analysis of chlorine dioxide, chlorite, and chlorate propagation in a drinking water distribution system

    The drinking water distribution system of Cremona, in the north of Italy, was monitored for 6 years (2006–2011) analyzing chlorine dioxide, chlorite, and chlorate concentrations. The software Epanet 2.0 (USEPA) was applied to the distribution system. The mixing zone of the water coming from the two drinking water treatment plants, respectively located to the west and east of the city, was ...


    By IWA Publishing

  • Grundfos Alldos Chlorine Dioxide System in Malaysia’s new Sepangar Bay submarine naval base

    Background At the Malaysia’s New Sepangar Bay Submarine Naval Base, Bacfree-Trident Water is selected to provide and retreat the direct potable water from municipal treated water for marine vessel applications. The source water is from the local municipal treated water supply source and is of excellent quality for most of the time. However, the water may be undesirable for direct ...


  • Comparison of commercial analytical techniques for measuring chlorine dioxide in urban desalinated drinking water

    Most drinking water industries are closely examining options to maintain a certain level of disinfectant residual through the entire distribution system. Chlorine dioxide is one of the promising disinfectants that is usually used as a secondary disinfectant, whereas the selection of the proper monitoring analytical technique to ensure disinfection and regulatory compliance has been debated ...


    By IWA Publishing

  • Monochloramine and chlorine dioxide for controlling Legionella pneumophila contamination: biocide levels and disinfection by-product formation in hospital water networks

    Legionella colonization in hospital hot water distribution networks was evaluated following 36 months of continuous treatment with monochloramine and compared with chlorine dioxide. Nitrite, nitrate, chlorite, chlorate, bromide, trihalomethanes and haloacetic acids as well as the biocide concentration at sampled points were measured. Only 8/84 samples treated with monochloramine were found ...


    By IWA Publishing

  • From Gas to Liquid: Large-Scale Chlorination System Conversion

    Abstract A number of wastewater treatment facilities using gas disinfection have decided to convert to liquid disinfection for several reasons including safety, regulatory, security, and economic factors. An optimal technology plan should be developed to facilitate the conversion. This presentation provides a case study of a large chlorine disinfection system, and demonstrates key issues of ...

  • Why you should be wary of using chlorine to treat drinking water

    Clean drinking water is something we often take for granted. At the turn of a tap, we have access to chlorinated water for every day use. However, for people who don’t want or can’t access scheme water, there is often a question of how to treat other water sources to make them safe. Chlorine is the most common water treatment agent. It is used by the Department of Health in Western ...


    By NW Solutions

  • Effect of the disinfection agents chlorine, UV irradiation, silver ions, and TiO2 nanoparticles/near-UV on DNA molecules

    Extracellular DNA in municipal wastewater and effluents from hospitals and R&D laboratories contains antimicrobial resistance and recombinant genes that are today considered as a new class of emerging contaminants. The objective of this research was to investigate the effect of disinfection agents on the integrity of DNA molecules by using real-time PCR. Escherichia coli cell suspensions and ...


    By IWA Publishing

  • Leaching of bisphenol A and F from new and old epoxy coatings: laboratory and field studies

    Laboratory tests were carried out with three types of new epoxy resins to assess the release of bisphenol A and F (BPA and BPF) and potential halogenated phenolic by-products. Tests were carried out over a duration of 6 months in the presence and absence of disinfectants (chlorine and chlorine dioxide) at realistic doses and contact times. None of the three systems exhibited Fickian-type ...


    By IWA Publishing

  • Blue-White's Flex-Flo A3 Peristaltic pumps in sodium hypochlorite applications

    The use of peristaltic pumps as the most effective method to pump sodium hypochlorite in water treatment plant applications.   Tube life averages 7000-7500 hours in this low pressure application illustrated below: The quality of life for Americans was greatly enhanced in the early 1900’s due to the introduction of chlorinated drinking water throughout the United States water ...


  • Wastewater Disinfection Technology Evaluation: From the Public Health and Security Perspectives

    This paper will compare alternative wastewater disinfection technologies based on the security vulnerability and the production of disinfection by-products while considering the effectiveness, reliability and cost of each technology. Increasing public attention and tighter regulation on DBPs, along with perception of security vulnerability on the existing chlorination systems, require more ...

  • Waterworks city of Toulouse

    Two chlorine dioxide plants with very high capacities are in operation in order to supply the city of Toulouse with drinking water. Absolute safety in distribution of the decontaminated water to the households is required. During pre-chlorination and during post-chlorination of the water, the second system is in stand-by operation and is automatically switched on at a possible failure. The ...


  • Biocidal Products Regulation - White Paper

    The European Biocidal Products Regulation (Regulation (EU) No. 528/2012) stipulates that biocidal products may only be made available and used on the market if they are certified in accordance with this regulation. Unlike the previous biocidal products legislation, so-called “in-situ” procedures such as electrolysis, chlorine dioxide and ozone now also fall under this certification ...

  • J555 gasless disinfection

    Detailed design, works manufacture and site installation of Sodium Hypochlorite dosing systems for conversion of 6 sites from Chlorine gas to liquid Sodium Hypochlorite Client: MWH Area: Hertfordshire WES Ltd were involved from early on in the project design stage in developing new Sodium Hypochlorite and Sodium Bisulphite dosing systems for Three Valleys ...


    By WES Ltd / Weschem Ltd

  • Use of a Magnetic Ion Exchange Resin to Improve DBP Precursor Removal and Reduce Coagulant Usage at Lee County`s OLGA WTP

    The 5 MGD Olga WTP in Lee County, Ft Myers, treats water from the Caloosahatchee River where TOC and color levels range from 15-25mg/L and 80-350 Pt Co Units respectively. This surface water presents many treatment challenges and treatment costs are high with alum doses in excess of 200mg/L required during times of the year to provide an adequate treated water quality. As part of Lee County’s ...


    By IXOM Watercare

  • Optimized hygiene in the beverage filling process - Case Study

    The company Teutoburger Christinenbrunnen GmbH & Co. in Bielefeld has realized and implemented new options in the area of the filling hygiene in a short term. In June 2008 a filling line in the plant Bielefeld was upgraded, so that during the running production the required hygiene status is kept during the whole filling time. With this technology beverages can be filled in their native form ...


    By Aquadron

  • Water Plant’s Investment in GTI Covers Brings Both Operational and Safety Benefits

    The Utility: The Griswold Water Treatment Plant is part of Aurora Water, the utility that manages water and wastewater in the city of Aurora, Colorado, USA. This direct filtration plant treats 80 million gallons of water per day (302,800 m³/d). The Utility’s Needs: Originally built in 1965, the Griswold Water Treatment Plant had undergone ...


    By Geomembrane Technologies

  • Chloramines

    OVERVIEW When chlorine is added to a water supply containing certain organics, the formation of halogenated organics occurs. Called 'trihalogenated methanes' (THM's) these reaction products are suspected carcinogens and maximum allowable limits in municipal supplies are imposed by the U.S. Environmental Protection Agency (EPA). To reduce the potential for the formation of THM's, many U.S. ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you