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Ultraviolet germicidal lamp is used in water treatment engineering of disinfection

by:LiangYueLiang     2020-05-17
Water treatment working principle of the ultraviolet germicidal lamp is able to output enough strength of UVC disinfection for engineering only artificial mercury ( Alloy) The light source. Ultraviolet germicidal lamp is made of quartz glass tubes after mercury lamp according to light up the mercury vapor pressure difference and the different intensity of ultraviolet lamp output, can be divided into low pressure mercury lamp, medium voltage, low strength high strength mercury lamp and low pressure mercury lamp three kinds of high strength. Sterilization effect is determined by the microbial acceptable exposure dose, but also by the uv lamp output energy and the type of lamp, light intensity and the use of time, as the light aging, it will lose 30% The strength of 50%. Uv exposure dose is to point to reach a certain rate of bacteria inactivated, need specific wavelength ultraviolet lamp: dose ( J/m2) = irradiation time ( s) X (UVC strength W/m2) The higher the dose, the greater the disinfection efficiency, due to the equipment size requirements, general irradiation time are only a few seconds, as a result, tubes of UVC output intensity is measured ultraviolet disinfection equipment performance of the main parameters. In urban wastewater disinfection, general average exposure dose in more than 300 J/m2. Lower than this value, may appear light resurrection phenomenon, namely bacteria cannot be completely kill, when the issue from the channel after exposure to visible light, resurrected, reduces the sterilization effect. Bactericidal efficiency is higher, the required the greater the exposure dose. The microbial accept enough uv exposure dose is light transmittance (the main factors 254 nm) , when the UVC output intensity and irradiation time, the changes of light transmittance will cause microbiological dose of actual change. Is the bright moon to talk about the ultraviolet germicidal lamp is used in water treatment engineering of disinfection, everybody can understand simple, see, the content is for reference only, need consultation can contact us.
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