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The principle of water treatment ultraviolet sterilization?

Jun 17, 2018

Its sterilization mechanism is the life genetic material that destroys the bacterial nucleic acid, making it unable to reproduce, and the most important reaction is the pyrimidine salt base in the nucleic acid molecule to become a dimer.

It is commonly used to use low - pressure mercury discharge lamps (sterilization lamps) artificial 253.7nm wavelength of uv energy.

Ultraviolet sterilization lamp principle is same as fluorescent lamp, it is only the lamp tube inside does not apply fluorescent material, the material of lamp tube is the quartz glass with high ultraviolet penetration rate.

General uv devices are used for irradiation, soaking and flowing water.


In hemodialysis the ultraviolet ray is diluted with water use in water storage tank to the pipeline between dialysis machines, namely all the dialysis water before use to accept an ultraviolet irradiation, in order to achieve a thorough sterilization effect.

The most sensitive to ultraviolet radiation is pseudomonas aeruginosa and coliform.

On the contrary, the larger tolerance is the bacillus subtilis.

Because ultraviolet disinfection method of safety, economy, the selectivity of strains, less water will not change, so has been widely using this method, such as drinking water is often use this kind of disinfection method on the ship.

The bacteria in the water, such as ikola, basra, salmonella, etc., can penetrate 360 degrees to kill bacteria, which is three times as effective as the surface sterilization lamp.

It can eliminate the algae in the water, the effect is obvious, the use is convenient, the ultraviolet disinfection lamp is applicable to: all sorts of size fishing ground filtration, the water treatment, the big small pool, the swimming field, the hot spring.

The sterilization efficiency can reach 99%-99.99%.