ultraviolet disinfection system Articles

  • Terms And Definitions In Ultraviolet Disinfection

    A series of recommended terms and definitions for use in ultraviolet disinfection are summarized. These terms and definitions have been harmonized with the IUPAC and SI system of nomenclature. This paper has been excerpted from a Draft Report of the International Union of Pure and Applied Chemistry (IUPAC) Working Party on Ultraviolet Disinfection. The members of that Working Party are: James ...

  • Computational modeling of ultraviolet disinfection

    The efficient design of ultraviolet light (UV) systems for water and wastewater treatment requires detailed knowledge of the patterns of fluid motion that occur in the disinfection channel. This knowledge is increasingly being obtained using Computational Fluid Dynamics (CFD) software packages that solve the equations governing turbulent fluid-flow motion. In this work, we present predictions of ...


    By IWA Publishing

  • Illuminating Ultraviolet Disinfection for High-Level Reuse in Florida

    Chlorine has been the mainstay of the wastewater disinfection industry for more than 100 years due to its effectiveness, low cost and availability. However, due to various problems associated with chlorine, the Hillsborough County, Florida Water Resource Services Department decided to replace the high-level reuse water chlorine gas disinfection system at the Valrico Advanced Wastewater Treatment ...

  • Ultraviolet disinfection systems, the best solution to school swimming pools

    School swimming pools are a valuable asset, and are now present in the majority of high schools and higher education facilities throughout the UK.  Whilst school pools vary in size, shape and usage, many school swimming facilities are facing a common dilemma in their water disinfection strategy.  Existing treatment regimes are often badly designed, under sized or simply outdated, which ...


    By atg UV Technology

  • 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 ...

  • Disinfection performance testing of high-efficiency ultraviolet water treatment chamber

    When introducing a disinfection product which incorporates new technology, it is essential that the methods and testing used to quantify the performance of those systems follow protocols which are technically sound and which are accepted by the scientific and technical community within the industry. These protocols must be applied precisely and rigorously in order to ensure accurate, repeatable ...


    By NeoTech Aqua Solutions, Inc.

  • Is Ultraviolet Ultra Safe?

    With retailers under pressure to meet increasing health and safety standards, it’s no surprise that many of our food & products are coming into contact with Ultraviolet (UV) radiation which is gradually becoming common as a cost effective method of reducing or eliminating pathogens Ultraviolet wavelengths are classified into three general areas: UV-A, UV-B and UV-C. These can be used in ...


    By Alpha Cure (UK)

  • 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 ...

  • Ultraviolet Light Oxidation of Free-Chlorine in Water

    Chlorine is the most frequently used chemical for water disinfection. Many industrial and commercial manufacturing facilities cannot tolerate the introduction of chlorine into the process because of contamination and unwanted chemical reactions. Chlorine affects the flavour and odour of drinks and fluids, accelerates corrosion on process vessels and piping, and can also damage delicate process ...

  • Blue Heron Ultraviolet Stormwater Management System case study

    Horry County Engineering Department Myrtle Beach, South Carolina, USA Even a single day of beach closure has a major impact on the tourist-dependent economy of beach communities. To reduce beach closures in Myrtle Beach, HDR used ultraviolet (UV) light to treat stormwater runoff to reduce pathogens prior to discharge to the ocean. The system uses disinfection ...


  • Wastewater disinfection for reclamation uses with Pacs8 system

    In this article Mr. Luukkonen explains wastewater reclamation for irrigation use in general terms. More specifically he describes use of Pacs chemical and Pacs 8 system in wastewater post-disinfection and its advantages over other technologies. Widely used wastewater disinfection methods are chlorine based chemicals, ultraviolet (UV) radiation, ozonation and more recently treatment with peracetic ...


  • Lighting the way for disinfection - Case study

    Pharmaceuticals manufacturing involves the handling of powders and volatile, flammable solvents such as iso-propanol. Consequently there is every opportunity for explosive atmospheres to form. Where this is the case, the Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) require that new equipment and protective systems must be selected on the basis of the requirements set ...


    By atg UV Technology

  • UV technology - unique in water disinfection

    Due to its undisputable Success &  Efficiency in destroying Cryptosporidium and Combined Chlorine, The Centers for Disease Control and Prevention Recommend installing UV Systems It has taken many years of testing to convince the pool market that the most reliable and best available option for treating and disinfecting water is through using Ultraviolet (UV) technology. UV systems ...


    By ESCO International

  • A comparison of disinfection performance and cost for various process combinations to disinfect reclaimed water

    For reclaimed water disinfection, pathogen reduction to acceptable public health risk levels is the primary objective. A second emerging objective is the ability to destroy trace pollutants (endocrine disrupters (EDCs), pharmaceutically active compounds (PhACs)) at a reasonably low cost. The WateReuse Foundation’s Innovative Reclaimed Water Treatment Project (WRF 02-009) is searching for ...

  • 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. ...

  • Selection and Installation of a UV Disinfection System as a Retrofit to an Existing Wastewater Treatment Plant

    Abstract New regulations affecting the management of chlorine and water quality concerns have led to an increasing popularity in the selection of ultraviolet light (UV) disinfection in the design and construction of new wastewater treatment facilities.  For these same concerns, it also makes sense to retrofit existing wastewater treatment facilities to replace the existing chlorination ...


    By Arcadis

  • Color removal and disinfection with UV/H2O2 system for wastewater reclamation and reuse

    ABSTRACTReuse of wastewater effluents from secondary treatment processes in municipal wastewater treatment plants has been issued because of substantial volumes of relatively clean waters. The major components of criteria for wastewater reclamations are color, organic matter, and pathogens. An advanced oxidation process with low-pressure ultraviolet and hydrogen peroxide addition ...


    By IWA Publishing

  • UV Systems for Reclaimed Water Disinfection – From Equipment Validation to Operation

    The Sanitation Districts of Los Angeles County (Districts) operate seven tertiary water reclamation plants (WRPs) with a combined treatment capacity over 200 million gallons per day (MGD). Although chloramination has provided reliable and effective disinfection, the Districts decided to change this disinfection practice at one of the WRPs to ultraviolet (UV) irradiation to minimize ...

  • Using UV to Disinfect Low Quality Wastewater

    This paper discusses the issues involved in sizing ultraviolet (UV) disinfection systems for low quality water, such as those found in poor quality wastewater (primary effluents) or wet weather flows (combined sewer overflows). Discussions of UV reactor dynamics and the merits of bioassay validation are ...

  • A pulsed light system for the disinfection of flow through water in the presence of inorganic contaminants

    The use of ultraviolet (UV) light for water disinfection has become increasingly popular due to on-going issues with drinking water and public health. Pulsed UV light has proved to be an effective form of inactivating a range of pathogens including parasite species. However, there are limited data available on the use of pulsed UV light for the disinfection of flowing water in the absence or ...


    By IWA Publishing

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