Features and conditions of use of ultraviolet sterilizers

The characteristics and advantages of ultraviolet sterilizers are as follows: 1. High-efficiency sterilization: The use of ultraviolet rays to sterilize bacteria and viruses can generally reach a sterilization rate of 99%-99.9% in one to two seconds. 2. Efficient and broad-spectrum sterilization: The broad-spectrum of ultraviolet sterilization is the highest, and it can kill almost all bacteria and viruses with high efficiency. 3. No secondary pollution: Ultraviolet sterilization does not add any chemicals, so it will not cause secondary pollution to the water body and surrounding environment, and will not change any components in the water.

4. Safe and reliable operation: For traditional disinfection techniques such as chloride or ozone, the disinfectant itself is a highly toxic and flammable substance, while the ultraviolet disinfection system does not have such safety hazards. 5. Low operation and maintenance costs: The ultraviolet sterilizer occupies a small area and the structure requirements are simple, so the total investment is small, and the operating cost is also low. At the level of 1,000 tons of water treatment, its cost is only 1/2 of chlorine disinfection . The use conditions of ultraviolet sterilizers are different in different occasions: 1. Ultraviolet rays can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, rickettsia and mycoplasma, etc. Microbiologically contaminated surfaces, water and air can be disinfected with UV light.

2. Ultraviolet radiation has low energy and weak penetrating power, and can only kill directly irradiated microorganisms. Therefore, the disinfection site must be fully exposed to ultraviolet rays during disinfection. 3. When using ultraviolet rays to disinfect rough surfaces such as paper and fabrics, the irradiation time should be extended appropriately, and both sides should be irradiated. 4. The suitable temperature range for ultraviolet disinfection is 20 ℃ ~ 40 ℃. If the temperature is too high or too low, it will affect the disinfection effect. The disinfection time can be extended appropriately. When it is used for air disinfection, the relative humidity of the disinfection environment is better than 80%. Otherwise, the irradiation time should be extended appropriately.

5. When using ultraviolet rays to kill microorganisms protected by organic matter, the irradiation dose should be increased. Suspended particles in the air and water are also factors that affect the disinfection effect. Ultraviolet disinfection does not have any chemicals and will not produce excess harmful substances. From the perspective of environmental protection, using ultraviolet sterilizers is nothing less than a very good choice.

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