The germicidal lamp does not need to be converted into visible light. The wavelength of 250nm-260nm can play a good sterilization effect. This wavelength range can destroy its chromosomes and play a photochemical role.
Only artificial mercury (alloy) light sources can output sufficient UVC intensity for engineering disinfection. The ultraviolet germicidal lamp tube is made of quartz glass. The mercury lamp is divided into three types according to the difference of mercury vapor pressure in the lamp after lighting and the difference of ultraviolet output intensity: low-pressure low-intensity mercury lamp, medium-pressure high-intensity mercury lamp lamps and low pressure high intensity mercury lamps. The bactericidal effect is determined by the irradiation dose received by the microorganisms, and at the same time, it is also affected by the output energy of ultraviolet rays, which is related to the type of lamp, light intensity and use time. As the lamp ages, it will lose 30 percent -50 percent of its intensity. . The ultraviolet irradiation dose refers to the amount of ultraviolet rays of a specific wavelength required to achieve a certain bacterial inactivation rate: irradiation dose (J/m2) = irradiation time (s) UVC intensity (W/m2) The greater the irradiation dose, the higher the disinfection efficiency. Due to the size requirements of the equipment, the general irradiation time is only a few seconds. Therefore, the UVC output intensity of the lamp has become the most important parameter to measure the performance of the ultraviolet light disinfection equipment. In urban sewage disinfection, the average irradiation dose is generally above 300 J/m2. Below this value, the phenomenon of photoresurrection may occur, that is, the bacteria cannot be completely killed, and when they flow out of the channel and receive visible light irradiation, they will be revived again, reducing the sterilization effect. The higher the requirement for sterilization efficiency, the larger the required irradiation dose. The main factor affecting the exposure of microorganisms to sufficient ultraviolet light irradiation dose is the transmittance (at 254 nm). When the UVC output intensity and irradiation time are constant, the change of light transmittance will cause the actual dose of microorganisms to change.
Most UV installations use traditional low-pressure UV lamp technology, and some large water plants use low-pressure high-intensity UV lamp systems and medium-pressure high-intensity UV lamp systems. Due to the high-intensity UV generated, the number of lamps may be reduced by more than 90 percent . The floor space is reduced, installation and maintenance costs are saved, and the ultraviolet disinfection method is also applicable to the effluent with poor water quality.
2022 High quality 10W GPH212T5 UV virus killing ultraviolet germicidal lamp with wholesale price:
Product name: ultraviolet germicidal lamp
voltage: 30V-176V(Customized)
Power: 10W-145W(Customized)
Certificate: CE ROHS
Pin: 1pin, 2pin, 4pin
installation: freestanding
Lamp tube material: High quality quartz
