Today science and technology are highly developed, why are people still afraid of the epidemic? The epidemic situation has caused many large-scale casualties in history, which has huge destructiveness.
Human life and health are threatened by many uncertainty factors. Such as, There are many kinds of pathogenic microorganisms, new pathogenic microorganism and pathogenic microorganisms are constantly mutating (producing drug resistance and new species). For complex new epidemic situation, it often takes several years or even longer to analyze and study new pathogenic microorganisms and find effective drugs for treatment. The effective prevention and control is still the main response method.
There are three main ways to spread epidemic: by water, by contact and by air. Disinfection and heating can effectively block the spread of epidemic through water. Spreading by contact can be controlled by isolating contact. Spreading by air is still a major problem. Air transmission includes droplet transmission, droplet core transmission and dust infection. The solutions include protective isolation (mask, protective clothing), air disinfection and space disinfection.
1、 Cs-UV new UV disinfection technology--- air disinfection
The traditional method of air disinfection is to filter by air supply system then to reduce pathogenic microorganisms in the space. For example, HEPA (high efficiency particulate Air filter) is used in ICU ward, operating room and other spaces in the hospital to effectively intercept particles and microorganisms, reduce pathogenic microorganisms in the space, and prevent bacteria from spreading through droplet core and dust. Due to the different mesh size of the filter screen, there are still a small number of pathogenic microorganisms and particles passing through the filter screen; and after HEPA works for a period of time, the one-time interception efficiency is reduced, and the risk of pathogenic microorganisms passing through the filter screen is increased. With the deposition of particulate matter, pathogenic microorganisms may breed and multiply, and overflow from the air outlet. The greater the dust capacity, the greater the risk of overflow.Direct drinking water can only be directly drunk after ultrafiltration and nanofiltration filtration and then ultraviolet disinfection. The air inhaled into the lungs, like drinking water, should also be disinfected after filtration, so that it can be safely inhaled. At present, the most feasible disinfection after air filtration is ultraviolet disinfection.
1. CS-UV air disinfection（new UV disfinection technology）
CS-UV (Broad spectrum and universal fast killing UV technology) adopts high-power UV lamp suitable for working in flowing air, which can quickly kill pathogenic microorganisms flowing through the channel at one time, and the one-time killing rate can be more than 99.99%. Generally, CS-UV is used after the first or multi-stage static electricity, and the one-time composite killing rate can reach 99.9999%, so as to achieve truly aseptic (pathogenic microorganism) air supply.
The combination of electrostatic adsorption and CS-UV Technology (electrostatic + CS-UV) can provide sterile air supply for space and ensure stable and safe breathing air source. CS-UV technology combined with airflow field design (laminar flow, orientation) in the air supply space can form effective isolation belt and sterile air layer, effectively avoid air transmission, and greatly reduce the spread of droplet core and dust.The application of electrostatic + CS-UV mobile disinfection machine in highly infectious space can make the concentration of space pathogenic microorganisms further rapidly reduce to the non pathogenic concentration (non infection concentration), and better prevent the spread of pathogenic microorganisms. The diagram of CS-UV mobile disinfector is shown in Figure 1
Figure 1 diagram of CS-UV mobile disinfector
Electrostatic plus CS-UV disinfection machine has the merits of good effects, high speed, no microbial secondary pollution, no need of consuming materials, no need to disnfect the consuming materials. CS-UV is suitable for rapid air disinfection of the air in the occupied space. Russian has taken the lead in using that machine in rail transit, followed by Germany, and the United States is also promoting it. CS-UV is a powerful tool for global epidemic prevention and control.
2、 COMCLER new ozone disinfection technology---- space disinfection
Space disinfection refers to the disinfection of specific articles and the air and surface disinfection of public space when no one is around, mainly including fumigation (acetic acid fumigation, formaldehyde fumigation, drug fumigation), disinfectant (chlorine dioxide, hydrogen peroxide) and ozone disinfection. Ozone can kill various pathogenic microorganisms, which is recognized as a broad-spectrum and high-efficiency disinfectant in the world. The gas diffusion is better than aerosol, and ozone disinfection is more thorough. There are three problems in the traditional Ozone Disinfector: 1. Ozone generated by air discharge is easy to produce harmful nitrogen oxides; 2. The amount of ozone is not stable due to the influence of dry and humid climate; 3. The ozone concentration in the space may still exceed the safe concentration within 8-10 hours after disinfection, and there is also a bad smell.
COMCLER (abbreviation for multifunctional disinfection) technology is a new type of ozone disinfection technology, which uses 185 nm ultraviolet radiation of oxygen in the air to generate ozone. After ozone disinfection, 253.7nm ultraviolet radiation is used to reduce ozone (O3) to oxygen (O2). The principle of COMCLER is shown in Fig. 2.
Fig. 2 Schematic diagram of COMCLER
The advantages of COMCLER technology are as follows: 1. No nitrogen oxide will be produced because the energy of 185nm photon is 647kJ/ mol, it can’t open the N-tri-N bond energy of nitrogen molecule (946kJ/ mol). 2. The amount of ozone is relatively stable. Although oxygen molecules and water molecules in the air will absorb 185nm photons, even in humid weather, the number of oxygen molecules in the air is still far more than that of water molecules, so it is mainly oxygen molecules that absorb 185nm to generate ozone; 3. The ozone reduction technology by ultraviolet ray can rapidly reduce the ozone concentration in space and improve the security of space after disinfection.
COMCLER technology can solve the three major problems of traditional ozone disinfector. As a new type of space disinfection technology for epidemic prevention and control, it can kill space microorganisms more thoroughly, and avoid the microorganism adsorbed on the surface and crevice of the object from spreading to the space again.
Excerpt from introduces of UV health Guard: two new technologies for the prevention and control of airborne diseases.
