A brief introduction
The issue of the spread of infectious diseases has become more and more prevalent in recent years. Harmful microorganisms are widely distributed and numerous in nature, especially in the air, and are capable of reproducing and mutating under certain conditions. Not only can it lead to deterioration and corrosion of various materials, but it can also cause infectious diseases and cross contamination such as SARS, such as SARS, avian influenza, hand-foot-mouth disease, dengue fever, etc. These diseases are a serious threat to human survival and health. To control the source of disease, sterilization of the air environment is very critical.
Significance of air sterilization
1. For special environments
Sterilization and purification of air is an even more urgent problem in large-scale areas where people are concentrated, such as hospital wards and post-disaster areas. To treat air that is polluted or contains more harmful microorganisms, the source of pollution should be controlled in time and appropriate methods should be used to sterilize and purify the air. Some viruses causing great harm to humans should be monitored and killed with specialized devices.
2. For enterprise
The air quality of the production workshop is directly related to whether the enterprise can produce qualified products, or even the survival of the enterprise. Especially for food, pharmaceutical and cosmetic factories.
Need for air sterilization
1. In order to ensure the quality of products and the health of staff, enterprises must take measures to guarantee the quality of air. Microorganisms exist in the form of aerosols in the air, which are small particles and can move with the air. Microbial contamination is extremely harmful to the hygienic quality of finished products, semi-finished products and raw materials of production enterprises, and even directly threatens the health of staff. Therefore, the elimination and control of harmful microorganisms in the air is necessary to ensure product quality and personal safety.
2. In order to meet the national laws and regulations as well as the requirements of the international certification system for the production environment, enterprises must take appropriate measures for air purification and sterilization.
Factors affecting the effectiveness of sterilization
1. Selection of disinfectant
Viruses in general are more sensitive to bases and formaldehyde, while being resistant to phenols. Most disinfectants kill bacteria well but have little effect on bacillus and viruses with spores, and pathogens have different sensitivities to different disinfectants. When choosing disinfectants, we should make the right choice for the disinfection object.
2. Concentration of disinfectant
Before using disinfectants, one should read the instructions carefully and prepare them at the optimum concentration for their disinfecting effect according to the different objects and purposes. Generally, the greater the concentration, the more effective the disinfection.
3. Time for sterilization
Different pathogens are not equally sensitive to different disinfectants, so the time required to kill them is also different. Generally, the longer the period of disinfection, the more effective the disinfection will be.
Some traditional methods of air sterilization
All of the traditional methods of air disinfection have some drawbacks.
1. Ultraviolet exposure
Ultraviolet light sterilizes by light wave radiation. Light waves travel in straight lines and the intensity of their irradiation is inversely proportional to the distance. Only the irradiation position meeting the irradiation standard has the sterilization effect, and the sterilization ability of all UV lamps decreases with the increase of the use time. The main problem with UV sterilization is that the penetrating power is small. UV light is not effective in disinfecting areas where it does not shine, and is especially ineffective in killing fungus. And with its short lamp life, it needs to be replaced frequently.
2. Fumigation with formaldehyde or chlorine dioxide
It requires complete closing of the disinfection spaceand troublesome operation, and the disinfection effect is average. It takes at least 8 hours to do a fumigation which is toxic, and the number of suspended ions in the air increases rapidly in the days following disinfection.
3. Ozone sterilization
Fast acting but short half-life. The half-life of ozone in the air can only last 20~50 minutes, and the higher the temperature, the faster the decline. Therefore, the sustained ability of sterilization is short, and can not be maintained for a long time (at least 3 hours). In addition, ozone disinfection cannot be used when people are in the area because ozone can irritate the human respiratory system, which can cause serious injury, and it is necessary to wait for at least one hour after the ozone machine is turned off for operators to be able to enter and work in the workshop.
4. Hand-pressure sprayers
Hand-pressure sprayers provide low atomization of disinfectants. Disinfectant particles are large, easy to sink to the ground and cannot float in the air for a long time, so it cannot play the effect of air disinfection, it only can play a role in the disinfection of the ground.
In response to the shortcomings of these disinfection methods, we, CYCO, have developed electrostatic disinfectant sprays specifically designed for various types of disinfection.
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