Why can't ultraviolet sterilizer be thoroughly sterilized?
Encounter somebody to say often, the bactericidal effect of ozone machine is better than ultraviolet bactericidal effect. Because in practice, the ozonator is actually more maneuverable. But in general the two are close. The comprehensive comparison between the two has been mentioned in the technical articles of lanling aquarium before. When ultraviolet sterilizer is used in some customers, there will be the problem of not being able to thoroughly sterilize. Here's a possible explanation:
1. The proportion of ultraviolet rays in the 235nm germicidal band is too small. Ultraviolet is a very broad term. Anything from 16 to 396nm can be called ultraviolet light. But the really strong bactericidal ability, is only 235nm band around a small section. And the light that current ultraviolet lamp tube gives out is combination light. In other words, ultraviolet light emitted by uv lamps includes ultraviolet light, shortwave ultraviolet light, long-wave ultraviolet light and other visible light. Some of the lower quality brand uv lamp. The proportion of uva is too small. Bactericidal ability is about to be discounted.
2. Too little intensity of irradiation. Irradiation intensity is an important index to measure the dose of ultraviolet irradiation in germicidal band. Only when the intensity of irradiation reaches the proper standard, can the corresponding germicidal effect be achieved. The intensity of the irradiation can be indicated by the amount of water per cm2.s. The number of radiated power received per unit area per unit time. It's just a nonstandard indicator. Because of the germicidal wave problem we talked about earlier. This parameter would be meaningless if all the radiated power were not dominated by electromagnetic waves at the germicidal band.
3. sterilization distance. This is a problem in physics. All radiation is globular. The farther away from the light source, the less intense the radiation. This requires the ultraviolet sterilizer in the design, should fully consider the sterilization distance. There are many manufacturers on the market produced ultraviolet sterilizer, using immersion. The target stream is different from the UV sterilizer. The water flow is too far away from the lamp tube, the germicidal effect cannot be guaranteed. The ultraviolet sterilizer produced by lanling aquarium adopts the fully closed overcurrent design, and the direct sterilization distance does not exceed 1CM, effectively guaranteeing the radiation intensity. Indirectly, the power of the uv lamp can be used to sterilize the water with the corresponding flow.
4.Turbidity of overflowed liquid. The uv penetration of germicidal bands is not as strong. So if you have an opaque foreign object in the liquid that blocks the light, the uv will not be able to work on the bacteria or virus on the back of the foreign object. LAN ling aquarium has been stressed that the ultraviolet sterilizer should be installed with sand filter cylinder and other physical filter equipment. On the one hand, it is to guarantee the sterilization effect, on the other hand, it is also to prevent the unclean water to make the ultraviolet germicidal lamp tube dirty.
5.The effective life of the lamp tube expires. The effective life of ordinary domestic uv sterilization lamp tube is only 8000 hours, and the average effective life of philips T8 ultraviolet lamp tube can be up to 12000 hours. When the effective service life of lamp tube arrived, should replace lamp tube.
6.It is related to the selection of ballast. Ballast is a component closely related to lamp life, radiation intensity and stability. The choice of the original authentic ballast is crucial for a brand uv lamp. Poor quality or mismatched ballasts will not only greatly reduce the lifespan of UV lamps, but more likely cause the UV lamp after multiple startup, unable to make the UV bactericidal lamp normal luminescence or cannot reach normal radiation intensity after starting. This leads to incomplete sterilization.
Guangzhou lanling water treatment equipment co., ltd. in the production of ultraviolet sterilizer, fully consider the above factors. Select the T8 lamp tubes provided by philips in mainland China as well as the original authentic ballast. To ensure the life, output power and stability of the machine. At the same time, the sealing and insulation have been improved for many times. The quality of domestic UV sterilizer has been raised to a high level. In particular, some of our domestic uv sterilization tube has been a lesson of the customer, has become our blue ling shuizu the most loyal supporter.
