The history of UV ray application

 Humans have long used the ultraviolet light in the sun to partially sterilize the tradition. Scientists at home and abroad have studied ultraviolet light for more than 200 years. Since Dr. Heraeus in Germany invented the first ultraviolet germicidal lamp, ultraviolet germicidal technology has been widely used in more and more fields, especially in Air sterilization, surface sterilization, and water treatment sterilization.

The scientific principle of ultraviolet disinfection: It mainly acts on the DNA of microorganisms, destroys the DNA structure, and makes it lose the function of reproduction and self-replication to achieve the purpose of sterilization.

Ultraviolet sterilization has the advantages of being colorless, odorless, and chemical-free, and has increasingly replaced the traditional chlorine and bleach sterilization technology in the water treatment field. Since Canada started using actual UV water treatment plants in 1982, the technology has been widely adopted in the United States, Europe, and India.

Ultraviolet rays are non-penetrating and spread in a straight line. There are three blind areas for sterilization:

1. Only sterilize and disinfect the upper surface of the object (food), not the lower surface of the object;

2. When multiple objects overlap, the surface of the overlapping part of the objects cannot be sterilized and disinfected;

3. Only the outer surface of the object can be sterilized and disinfected, not the inside of the object! That is to say, the place where the ultraviolet (invisible light) cannot be irradiated cannot play the role of sterilization.

The ultraviolet disinfection lamp uses ultraviolet rays to kill bacteria, spores, mycobacteria, coronaviruses, fungi, rickettsiae, and chlamydia. All surfaces, water and air contaminated by the above viruses can be disinfected by ultraviolet rays. .

Ultraviolet disinfection lamps are mainly divided into: high pressure, medium pressure and low pressure. Disinfection application is mainly low pressure. According to national standards, the average life span is 8000 hours. Some excellent products have reached a life span of 13,000 hours.