on-site disinfection system Articles

  • A Regulatory Perspective on Maintenance of Disinfection Systems

    ABSTRACTThe Clean Water Act contains requirements to set water quality standards for all contaminants, including bacterial contaminants, in surface waters. Wastewater treatment cannot be expected to remove all of the bacterial contaminants, and as a result, many organisms remain in the waste stream. Therefore, disinfection of treated wastewaters is designed to reduce bacterial numbers to a safe ...

  • An alternative cooling tower disinfectant: On-site generated mixed oxidants

    Favorable temperatures (80-110°F) and availability of nutrients make cooling tower systems ideal places for microbial growth. Accumulation of biofilm impedes proper heat transfer and secretes metabolic products that contribute to microbiologically influenced corrosion (MIC). The films also may propagate and release disease-causing bacteria. Control of microbial growth is traditionally ...


    By MIOX Corporation

  • 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

  • Key Operating Strategies for Chlorine Disinfection Operating Systems

    ABSTRACTChlorine has been used as a standard for disinfecting wastewater for many years. While being the standard There are many levels of automation for control of disinfection. To select the best control approach for your facility both control strategies and chlorination chemistry must be understood. Permit conditions must also be fully identified; organism concentrations and operational data. ...

  • Sustainable, Low-maintenance Disinfection for Onsite Systems

    Most of the regulations applicable for onsite wastewater treatment system are based on the use of native soil for effluent dispersal. However, there are more and more situations where dispersal of effluent in native soil is impossible: repairs of existing systems on undersized lots for implementation of required dispersal fields: sites located in soils having low permeability: or where the ...


    By Premier Tech Aqua

  • 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. ...

  • ClorTec™ On-site Disinfection Helps Ensure Safety at British Columbia Water Treatment Facility

    Constructed in 1997, the District of Chetwynd Water Treatment Plant (British Columbia, Canada) treats nearly 2,500 cubic meters of water per day using gas chlorination as its primary form of drinking water disinfection. With recent concerns about the safety of chlorine gas, including potential eye, skin and respiratory irritation and the risk of death with high exposure, the district elected ...


    By De Nora Water Technologies

  • Disinfection Performance and Applicable Process Design Parameters of State of the Art Open Channel Vertical Format Ultraviolet Disinfection System

    Ultraviolet Disinfection of varying quality wastewater effluent has been determined to be an effective alternative to the use of chemical Disinfection techniques. There are a number of alternative UV system formats available for consideration in plant and process design. The comparative strengths of various formats are examined in detail with specific attention to process efficacy, life cycle ...

  • The Daytona Beach Ralph Brennan Water Treatment Plant Finds On-Site Generation to be a Safe and Economical Solution for Water Disinfection

     ABSTRACT For many years the use of gaseous chlorine at water treatment plants has been an effective and widely used method of disinfection. It is still the most commonly used disinfectant treatment in water treatment plants in the United States. In recent years however, the safety of chlorine gas has come under increased scrutiny. The side effects to chlorine gas exposure at low levels ...

  • Water residence time in a distribution system and its impact on disinfectant residuals and trihalomethanes

    The most critical water quality conditions are generally found at a water distribution network's extremities, given their high residence times. As chlorine injected at the water treatment plant (WTP) or at rechlorination sites has more time to react, residual chlorine concentrations at the extremities may not be enough to prevent microbial regrowth. This study focuses on the relationships between ...


    By IWA Publishing

  • Importance of measuring UV transmittance (UVT) for UV disinfection

    UV disinfection systems disinfect water using UV light at the 254 nm wavelength. UV light at this wavelength actually destroys the DNA of microbiological material in the water which prevents dangerous viruses such as cryptosporidium and e-coli from reproducing and causing harm. UV Disinfection Dose and UV Transmittance (UVT) The effectiveness of a UV disinfection system is ...


    By Real Tech Inc.

  • Supreme hotel relies on supreme water disinfection by Grundfos

    Kempinski Hotel Zografski is a 5-star hotel located in Lozenets, near downtown Sofia, Bulgaria. It is one of the most luxurious hotels in the capital of Bulgaria. It has 442 guest rooms, 10 conference rooms, 5 restaurants, 3 bars and the only Japanese garden in the Balkans. The hotel was built between 1974 and 1979 to the design of leading Japanese architect Kisho Kurokawa (1934 - 2007) in the ...


  • On-Site Sodium Hypochlorite Generation

    AbstractIn this manuscript the on-site generation of sodium hypochorite for water and wastewater disinfection will be examined. The objective of this paper is to familiarize the reader with the equipment and operational requirements necessary for on-site sodium hypochlorite generation systems. This manuscript will review the following topics relative to on-site generation systems: Understand the ...

  • Mixed Oxidants show disinfection benefits for municipalities

    “The most significant advantage over gas chlorination or hypochlorination is an ability to maintain chlorine residuals further along the water distribution system, due to better biofilm removal. Other noted advantages of mixed oxidants are ease of operation with self-cleaning electrolytic cell on-site generators, fewer safety issues in comparison to gas chlorination, and lower costs ...


    By MIOX Corporation

  • Operating Chemically Enhanced Clarification for Optimum Disinfection Performance

    ABSTRACTThe Milwaukee Metropolitan Sewerage District conducted demonstration tests in 2005 to evaluate chemically enhanced clarification (CEC) of wet-weather flows at the District’s two wastewater treatment plants (WWTPs). CEC offers the potential to treat intermittent high wetweather flows, produce high-quality effluent, and fit into the limited space at the plant sites. Two CEC processes were ...

  • New DWI guidelines for UV drinking water disinfection

    atg UV, has seen increasing interest in the application of UV systems for the treatment of drinking water applications since the UK Drinking Water Inspectorate (DWI) released their ‘Guidance on the use of Ultraviolet (UV) Irradiation for the Disinfection of Public Water Supplies' February 2010. With systems treating in excess of 2000 m3/hr daily, Ultraviolet disinfection is no longer an ...


    By atg UV Technology

  • atg UV choosen for sugar solution disinfection

    Client: SOFI   Location: Dunkirk, France Description: atg UV provided UV disinfection for sugar syrup solutions based on their vast experience in the beverage production industry, providing systems for some of the world's leading brands, such as Heineken, Britvic, Thwaites and Coca-Cola. atg UV Technology, market leaders in the ...


    By atg UV Technology

  • Enhanced UV Disinfection by Ozone/Peroxide a Study in Tampa, Florida

    The focus of this presentation is the use of oxidant(s) to enhance ultraviolet (UV) disinfection based on an ongoing project at Tampa’s Howard F. Curren Advanced Wastewater Treatment Plant (HFCAWTP). This approach is unique because it would be the first of its kind in Florida. Systemic bench-scale testing and on-site water quality measurements are used to evaluate the oxidant-enhanced UV ...

  • Factors affecting the performance and risks to human health of on-site wastewater treatment systems

    Aerobic wastewater treatment systems (aerobic systems) are the preferred choice in a region overlying a karstic aquifer used for drinking water supplies, as they are thought to provide better protection to groundwater and human health than standard septic systems. However, aerobic systems in operation do not always perform to design standard; while this is often blamed on lack of maintenance, few ...


    By IWA Publishing

  • Removal of bacteria, protozoa and viruses through a multiple-barrier household water disinfection system

    Municipal water disinfection systems in some areas are not always able to meet water consumer needs, such as ensuring distributed water quality, because household water management can be a contributing factor in water re-contamination. This fact is related to the storage options that are common in places where water is scarce or is distributed over limited time periods. The aim of this study is ...


    By IWA Publishing

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