Compared with other sterilization and disinfection methods, ultraviolet sterilizer and ozone generator are more widely used in water treatment industry in recent years. Ultraviolet rays can destroy bacterial DNA, and ozone can play a strong role in oxidation. They have their own advantages in sterilization and disinfection according to different environments.

Sterilization principle of ultraviolet sterilizer in water treatment:   Research shows that ultraviolet light with a wavelength of 200-290mm can damage the nucleic acid (DNA) controlling genetic phenomena and biological functions through the cell membrane of bacteria or viruses, making it lose its branching and reproductive ability, so as to achieve the goal of sterilization.

        Experiments show that ultraviolet light with a wavelength of 250-260mm is more easily absorbed by nucleic acid (DNA) than ultraviolet light with other wavelengths. This is why ultraviolet light of this wavelength has the strongest bactericidal ability. The bacteria are treated according to the amount of ultraviolet radiation required by the microorganisms to be killed without any change in water quality. Flash sterilization is carried out in a very short time, and the effect is good. Moreover, this treatment is completed in a straight pipe flow type device.

Advantage analysis of ultraviolet sterilizer in water treatment

1. Broad spectrum, the broad spectrum of ultraviolet sterilization is the highest. It can kill almost all bacteria and viruses with high efficiency;

2. High efficiency sterilization, ultraviolet sterilization of bacteria and viruses can generally reach a sterilization rate of 99% - 99.9% in one to two seconds;

3. The operation and maintenance cost is low, the ultraviolet sterilization equipment occupies a small area and the requirements for structures are simple, so the total investment is less. The operation cost is also low;

4. The operation is safe and reliable. The traditional disinfection technology, such as chloride or ozone, belongs to highly toxic and flammable substances. The ultraviolet disinfection system does not have such a potential safety hazard;

5. No secondary pollution, ultraviolet sterilization does not add any chemical agents, so it will not cause secondary pollution to the water body and the surrounding environment. It does not change any component in the water.

Application principle of ozone generator in water treatment:

        Friends with a little chemical knowledge must know that ozone is a strong oxidant. Like chlorination, ozone can not only disinfect, but also oxidize. In addition, ozone has stronger disinfection ability and oxidation than chlorine. It can oxidize organic matter in water and kill viruses, spores and bacteria. Ozone is produced by ozone generator with air or pure oxygen on site, and the yields are 1% - 3% and 2% - 6% respectively.

Analysis of ozone sterilization advantages:

1. Ozone disinfection can reduce the concentration of total organic halides in water.

2. Ozone can reduce the generation of haloalkane disinfection by-products such as THMs in water.

3. Ozone disinfection has rapid reaction and high sterilization efficiency. At the same time, it can effectively remove residual organic matter, color, smell and taste in water, which is little affected by pH value and temperature.

summary

  The above briefly introduces the functions of ultraviolet sterilizer and ozone generator in water treatment. It is not difficult to see that the two sterilization methods have their own advantages. Of course, they will also be limited by some restrictive factors, such as poor water quality and high turbidity. Ozone disinfection will produce aldehydes, ketones, alcohols and other substances. If chlorinated, it will produce harmful substances such as trihalomethane.

  To sum up, ultraviolet sterilizer and ozone generator have their own advantages in the field of water treatment. According to the specific environment, reasonable selection can achieve the purpose of perfect sterilization and disinfection. With the rapid development of industrial economy, global water resources are polluted to varying degrees. In recent years, with the rapid development of domestic economy, the pollution of water resources in China is not optimistic. It is believed that in this context, the water treatment industry in China and even the world will continue to develop rapidly in the next few years