water disinfection without chlorine Articles

  • Comparing electrochemical disinfection with chlorination for inactivation of bacterial spores in drinking water

    Drinking water disinfection techniques without the dosage of chemicals are regarded as more advantageous in terms of costs and practical use. Here we investigated the efficacy of electrochemical disinfection for inactivation of Bacillus subtilis spores – a model microorganism of highly resistant pathogens. The effect of electrochemical disinfection with ...


    By IWA Publishing

  • What methods of disinfecting water are there?

    The aim behind disinfecting water is to make it safe to drink. As the water experts, NW Solutions will look at some of the different methods to disinfect water and their advantages and disadvantages. To be considered for this list, the disinfectant must: Destroy all types of pathogens, regardless of volume, present in the water Not make the water toxic or render it ...


    By NW Solutions

  • Tampa Switches to Chlorine for Water Treatment

    Many Tampa residents received a notice in the mail a few days ago alerting them that the city is temporarily changing their disinfecting agent from chloramines to chlorine. The notice, which you can read in full below, claims that this procedure is merely routine maintenance and that the water will still be safe to drink. ...


    By Enviro Water Products

  • Controoling chlorine costs

    The most widespread disinfectant used in the treatment of drinking water is chlorine, which can be applied in a variety of ways. History has taught us that, in bacteriological terms, chlorinating water is a proven way of disinfecting drinking water. After all, more than 75 years have passed since chlorine was used to disinfect drinking water for the first time. Many years of experience have shown ...


  • Sanitation Using Ozone & Chlorine

    For nearly 100 years, ozone has been used all over the world for water sanitation. It is nature’s strongest oxidizer and has a byproduct of pure oxygen. Chlorine, on the other hand, is a very effective, time-proven chemical, but is ineffective against hard-to-kill microorganisms such as cryptosporidium. It also has some unpleasant byproducts. Together, however, these two substances can ...


    By ClearWater Tech LLC

  • Emerging Trends In UV Disinfection For Water Treatment

    Introduction The UV disinfection industry has experienced tremendous growth over the last 20 years.  The development of new UV technologies over this period has been a perfect example of an industry investing to meet market demand – in this case demand for an effective, low cost, and environmentally friendly disinfection technology.  The acceptance of UV disinfection at water plants ...

  • Bacteria-free water - without the use of toxic chemicals - Case Study

    Aarhus University Hospital fought against Legionella bacteria – and won Legionella bacteria thrives in all hot-water supplies and Aarhus University Hospital, Risskov felt the problem firsthand. With the ECA generator from Danish Clean Water A/S they managed to significantly reduce the bacteria and thereby minimizing risks concerning Legionella. Virtually all hospitals, ...


    By Danish Clean Water A/S

  • Choosing Right Methods for the Chlorine Disinfections to Meet Daily E. coli Limit in a Large Nitrification Plant

    Indiana is one of a few states that has replaced a weekly Fecal limit with a daily E. coli limit as an indicator organism for wastewater disinfection. It has been accepted that E. coli is a better organism indicator. However, there is still not an EPA approved method for enumerating E. coli in wastewater. Indiana has adopted several different methods for use by wastewater treatment plants for ...

  • Legionella - Perfectly clean water without the use of chemicals - Case Study

    Showers in indoor swimming pool was legionella-free without dangerous chemicals In the spring of 2012 dangerous legionella bacteria outbreak was found in the shower installation in Osby swimming hall in Sweden. Now the shower installation is completely legionella free, and secure the visitors against future outbreaks, by using a harmless and biodegradable liquid NEUTHOX. Each ...


    By Danish Clean Water A/S

  • Bacterial Control in Water - Perfectly Clean Water Without the use of Toxic Chemicals - Case Study

    We believe technology can help create a better future For years the world has been facing an increased pressure on the supply of safe drinking water due to a growing population and demands of industrial growth in many countries worldwide. We have furthermore recognized that outbreaks of food poisoning, from bacteria such as E.coli, Campylobacter, Salmonella and Listeria, can have ...


    By Danish Clean Water A/S

  • The Benefits Of UV Disinfection In The Pharmaceutical Industry

    The quality standards required for purified water in the production of pharmaceuticals have never been stricter, with manufacturers having to conform to an ever increasing number of international standards. Craig Howarth, Managing Director of Hanovia Limited, introduces a number of interesting new developments in UV technology for disinfection and dechlorination. ...

  • Chlorine Safety and Prevention: How to Protect Yourself from Chlorine Leaks

    While chlorine gas is widely used in swimming pools, water treatment facilities, cleaning products, pharmaceutical products, and in many other industries, the gas is highly toxic when handled improperly. Training your workers on how to safely use chlorine is one part of health and safety best practices; monitoring your workplace for chlorine leaks is another. Learn about the hidden dangers in ...

  • Using UV for Simultaneous Disinfection and Control of Unpleasant Tastes and Odors in Drinking Water

    Algae blooms in surface water sources often lead to off-tastes and odors in finished drinking water. Because public confidence in overall drinking water quality is closely related to aesthetic quality, there is increasing interest in solving taste and odor issues.  UV-oxidation, the combination of UV and hydrogen peroxide, offers the ability to treat taste and odor (T&O) while simultaneously ...

  • Comparing the Realities of Elemental Chlorine vs. Sodium Hypochlorite

    Recently, we have seen a growing trend towards the use of a less reliable and more costly disinfection chemical, Sodium Hypochlorite. Much of this can be attributed to the fact that large companies making chemical metering pumps for other uses or other alternative disinfection devices as well as chemical suppliers who profit more by selling costly Sodium Hypochlorite have proliferated misleading ...


    By Hydro Instruments

  • Quality and disinfection trials of consumption water in storage reservoirs for rural area in the Marrakech region (Assif El Mal)

    Traditional reservoirs for water storage are important systems of water supply in rural areas of Morocco. These reservoirs are fed by rainwater and/or directly from rivers through open channels; the stored water is used without any treatment as drinking water by the surrounding population. The present study aimed to assess the physicochemical and bacteriological quality of stored water and the ...


    By IWA Publishing

  • Spatial diversity of chlorine residual in a drinking water distribution system: application of an integrated fuzzy logic technique

    A reduction in the concentration of chlorine, which is used as a chemical disinfectant for water in drinking water distribution systems, can be considered to be an index of the progressive deterioration of water quality. In this work, attention is given to the spatial distribution of the residual chlorine in drinking water distribution systems. The criterion for grouping the water-quality ...


    By IWA Publishing

  • 16 Oxiperm Pro disinfection systems with flushing capacity for Messe München

    The exhibition organisers need to provide different amounts of domestic water for different kinds of exhibitors. For example, an IT industry exhibition needs a different amount of water to a watersports exhibition. This means that the domestic water pipes need to be designed on basis of the shows which need largest volumes of drinking water. With all sorts of different occupants in the Munich ...


  • Factors Affecting Cyanide Generation in Chlorinated Wastewater Effluent Matrix

    ABSTRACTFalse positives for cyanide analysis in wastewaters have been reported. We examined the effects of storage time at high pH and of pH adjustments on the cyanide levels. Cyanide levels changed within the holding time allowed by Standard Methods. We also studied the difference in cyanide levels using two disinfection conditions -- breakpoint chlorination and chloramination. Glycine was used ...

  • UV disinfection for enhanced oil recovery and other oilfield applications

    One of the biggest challenges facing oil companies today is how to extract more oil from the discoveries made in the last 40 years. Estimates vary, but approximately 66% of the discovered oil gets left in the ground. The International Energy Agency has estimated that if, in the next 20 years, this figure could be reduced to 50%, then this would increase the world's recoverable oil by 1.2 trillion ...


    By atg UV Technology

  • Disinfection By-Products (DBP) Compliance through Pre-treatment for TOC Removal

    Over the last few years, utilities have adjusted their existing processes to reduce the formation of DBPs in order to comply with the Stage 1 DBP Rule. With Stage 2 looming in the near future, many utilities have nothing left to optimize in order to minimize DBP peaking in the distribution systems. A non-chemical treatment process was developed in response to the need to remove greater amounts ...


    By IXOM Watercare

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