uv lamp Articles

  • Microwave UV - An everlasting lamp?

    Microwave UV Disinfection – An Everlasting Lamp?Many of you working in the water and wastewater industry will have observed the emergence of Ultraviolet technology as a player in the world of disinfection over the past 10-15 years. This article will provide a brief introduction to UV technology and outline a recent advancement in the field: - the generation of UV light using microwave energy ...


    By O2 Environmental Inc.

  • How to clean your UV lamp

    Cleaning Your UV Lamps and System It is extremely important to maintain your UV lamps and system to avoid problems which could prevent your UV lamp from curing. Firstly when handling a UV lamp we strongly recommend that you wear gloves, this will prevent contaminants such as fingerprints from sticking to the surface of the quartz body. To clean the lamp you can use a lint free cloth with either ...


    By Alpha Cure (UK)

  • Spectral distribution of uv light during aging of medium pressure UV lamps

    As part of a project to validate a UV reactor for disinfection of drinking water, the germicidal output of four medium pressure lamps housed in a continuously operating reactor was followed as a function of time. Spectra were measured monthly and were used in conjunction with radiometer readings to calculate germicidal fluence rates (using DNA absorbance weighting) at the radiometer sensor ...

  • Optimization of lamp arrangement in a closed-conduit UV reactor based on a genetic algorithm

    The choice for the arrangement of the UV lamps in a closed-conduit ultraviolet (CCUV) reactor significantly affects the performance. However, a systematic methodology for the optimal lamp arrangement within the chamber of the CCUV reactor is not well established in the literature. In this research work, we propose a viable systematic methodology for the lamp arrangement based on a genetic ...


    By IWA Publishing

  • A Comparison Of Microbial Repair Mechanisms With Low Pressure And Medium Pressure UV Lamps

    Introduction It is well-known that bacteria and other microorganisms are capable of repairing their DNA following damage by ultraviolet (UV) radiation. Known as ‘reactivation’, it is a natural defense mechanism that has evolved over millions of years. Some microorganisms need visible light in order to repair their DNA (known as ‘photoreactivation’), while others can repair their DNA without light ...


    By Aquionics Inc

  • Prediction of advanced oxidation performance in UV/H2O2 reactor systems with LP-UV lamps

    Advanced oxidation processes, like UV/H2O2 oxidation, are important barriers against organic micro pollutants in drinking water treatment. In order to guarantee safe drinking water, it is important to be able to predict the reactors' performance to adjust the operating conditions to the actual influent water characteristics (like UV transmission) and lamp performance. Therefore, a design tool was ...


    By IWA Publishing

  • Improving vacuum-UV (VUV) photolysis of organic compounds in water with a phosphor converted xenon excimer lamp emitting at 193 nm

    A novel vacuum ultraviolet excimer lamp emitting light at 193 nm was used to investigate the degradation of organic micropollutants in ultrapure water and wastewater treatment plant (WWTP) effluent. Overall, light at 193 nm proved to be efficient to degrade the investigated micropollutants (diclofenac, diatrizoic acid, sulfamethoxazole). Experiments with WWTP effluent proved the ability of ...


    By IWA Publishing

  • Determination of pyrimidine dimers in the genomic DNA of Escherichia coli during photoreactivation following inactivation by medium-pressure UV lamp

    A polychromatic medium-pressure (MP) UV lamp was compared with a monochromatic low-pressure (LP) UV lamp to investigate the inactivation and the subsequent photoreactivation of Escherichia coli . An endonuclease sensitive site (ESS) assay was applied to determine the number of UV-induced pyrimidine dimers in the genomic DNA of E.coli in parallel with a conventional colony forming assay. more than ...

  • A method for determining the optimal discretization of UV lamps for emission-based fluence rate models

    A method for optimizing the number of segment sources needed to discretize UV lamps for fluence rate modeling and dose calculations when using the multiple segment source summation (MSSS) fluence rate model (FRM) is presented. An ideal location for determining the optimal number of point or segment sources was found using the multiple point source summation (MPSS) method with no reflection and ...


    By IWA Publishing

  • Experimental study on colour removal from textile wastewaters using the H2O2/UV process with low- and medium-pressure lamps

    In this paper we present the results of an experimental study aimed at estimating the efficiency and comparing the operating costs of a low pressure lamp and a medium pressure lamp in the H2O2/UV process for colour removal. Trials have been carried out on the secondary effluent of a wastewater treatment plant which treats part of the effluents of one of the largest textile industries district in ...


    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.

  • 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. ...

  • atg UV drives value & performance into ageing UV systems

    Client: Dee Valley Water   Location: North West Description: Dee Valley Water choose atg UV to replace their ageing UV systems by retrofitting their existing infustructure. atg UV Technology were selected by Dee Valley Water to increase performance and drive value into their existing UV treatment facility by retrofiting their ...


    By atg UV Technology

  • Glass and UV-Passing Acrylic Lens in UV Light Applications

    Glass and UV-passing acrylic lenses play an important role in ultraviolet (UV) lighting. Both are applied to control the transmission of specific wavelengths from the fixture to the target area. When used for windows, the panels offer protection from harmful UV bands. Below highlights the advantages of the materials and their applications in UV light mitigation. Glass and UV ...


    By Larson Electronics LLC

  • 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

  • Types of UV Light for Different Applications

    Types of UV Light for Different Applications Ultraviolet (UV) radiation was discovered in 1801 when the German physicist Johann Wilhelm Ritter observed that invisible rays just beyond the violet end of the visible spectrum darkened silver chloride-soaked paper more quickly than violet light itself. He called them "oxidizing rays" to emphasize chemical reactivity and to ...


    By Larson Electronics LLC

  • LIT UV-system at Lofoten archipelago.

    LIT UV-system at Lofoten archipelago. The company UNIK in Norway has been successfully selling LIT UV-systems for almost four years. The company is based in Os, which is close to the town of Bergen. Earlier this year UNIK has sold and installed two LIT UV-systems in the Nusfjord water treatment plant. A technically good offer, respected references and good technical skills have finally leaded ...

  • UV set to dominate the municipal industry

    The use of Ultra Violet (UV) light has now become standard practice in most municipal waste water treatment processes. Effluent is now starting to be recognised as a valuable resource, not a problem that needs to be dumped.  Many waste water facilities are being renamed as water reclamation facilities, and whether the waste water is being discharged into a river, being used to irrigate ...


    By atg UV Technology

  • UV Light Treatment for HVAC Systems

    Ultraviolet (UV) light can be applied to support numerous applications in a broad range of industries. In commercial paint spray booths and label manufacturing plants, UV lamps are used to streamline paint jobs and the printing of logos. Outside of such practices, the light source may also be utilized to eradicate harmful, disease-causing bacteria. Systems that rely on the light’s ability ...


    By Larson Electronics LLC

  • UV, a bright future for the water industry

    The use of Ultra Violet (UV) light has now become standard practice in most municipal waste water treatment processes.  Effluent is now starting to be recognised as a valuable resource, not a problem that needs to be dumped. Many waste water facilities are being renamed as water reclamation facilities, and whether the waste water is being discharged into a river, being used to irrigate ...


    By atg UV Technology

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