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Although the use of slightly acidic hypochlorous water spray can effectively remove microorganisms in the air, the use of atomization also has problems such as relatively weak disinfection effect and increased air humidity during disinfection. How to use better tools to maximize the effect of slightly acidic hypochlorous acid water. The washing air purifier may be the answer you need!
More applicable equipment (washing air purifier) + safer disinfectant (hypochlorous acid water) = healthier air.
"GB/T36758-2018 Hygienic Requirements for Chlorine Disinfectants" clearly states that hypochlorous acid water can be used for air disinfection, as follows:
General chlorine-containing disinfectants are suitable for the disinfection of general object surfaces, medical equipment, medical waste, food and drink utensils, fabrics and water in medical and health institutions, public places and households, as well as the treatment of various pollutants in the epidemic source. Not suitable for disinfection of indoor air, hands, skin and mucous membranes.
In addition to the above-mentioned purposes, hypochlorous acid disinfectant can also be used to disinfect the surface of air, secondary water supply equipment, hands, skin and mucous membranes.
Hakimullah of the University of Tokyo studied the killing effect of hypochlorous acid water spray on influenza virus. The results showed that spraying with 50, 100 and 200 ppm HOCl solution for 30 seconds can reduce the AIV concentration by more than 1000 times.
Zheng Zhonghua et al. studied the effect of using 30ppm slightly acidic hypochlorous acid water to disinfect a space of 37m³. The study showed that the sterilization atomizer atomized and acted for 120 minutes, the average sterilization rate of natural bacteria in the air in a confined space It can reach more than 90% (increasing the applicable concentration can reduce the action time).
In 2013, Chi-Yu Chuang of National Taiwan University used non-diaphragm electrolysis to produce 50ppm acidic hypochlorous acid water, and used hypochlorous acid water for atomization when the air exchange rate was 1.0 times/h. To verify the removal effect of hypochlorous acid water on bioaerosols containing Staphylococcus aureus and lambda virus. The results show that the hypochlorous acid water prepared by the non-diaphragm method can effectively reduce the bioaerosol in the air.
The importance of air quality
Air quality is directly related to human health. There are three types of pollution in the air: biological pollution, chemical pollution and physical pollution. Among them, biological pollution is the pollution with the fastest impact, the widest impact, and the most harmful.
Microorganisms breed and multiply indoors and pollute the air, which can cause eye irritation, allergies, asthma, dermatitis, and sick building syndromes, and even lead to death. At present, indoor microbial pollution has become an important environmental sanitation problem, and it has become one of the hotspots of people's attention.
Many human infectious diseases are spread through the air. Among the 41 major infectious diseases in the world, 14 are airborne. SARS, which caused huge losses to humans in 2003, and the current global epidemic of 2019-nCoV, are spread through the air. Droplets are the main way of transmission. Therefore, when airborne infectious diseases come, in order to cut off the transmission route, air disinfection is particularly necessary.
Sources of indoor air pollution
Indoor air microorganisms mainly come from the following three aspects: one is droplets. When people breathe, talk, and sneez deeply, they will spread the microorganisms that are parasitic in the mouth and throat into the air in the form of droplets; the other is people. According to estimates, each dander contains an average of 40,000 bacteria. As people move indoors, the dander and dust can be suspended in the air and pollute the air, especially when there are patients at home. Corresponding pathogenic bacteria can be found in the air; the third is the microorganisms carried by the outdoor air entering the room during the ventilation process.
Some common respiratory diseases and some infectious diseases, such as pneumonia, tuberculosis, influenza, measles, mumps, rubella and other diseases, can be spread through the air.
The method of indoor air disinfection
Commonly used indoor air disinfection methods mainly include physical methods and chemical methods. The most commonly used physical method is ultraviolet germicidal lamp disinfection, which is economical and efficient for household air disinfection. It is easy to open after installation, time is easy to control, and does not damage household items.
The ultraviolet disinfection lamp should be used correctly, otherwise it will bring more serious harm. Common hazards are: 1. Damage to the skin. Exposure to ultraviolet disinfection lamps, the skin can cause redness, swelling, pain, scaling and other changes. 2. Damage to the eyes. Ultraviolet disinfection lamps can cause eye conjunctivitis, keratitis, redness, swelling, pain, and tears in the eyes. Long-term use may cause cataracts. Therefore, when using ultraviolet disinfection lamps, try to keep people away from the room.
Ozone has a good disinfection effect on indoor air microorganisms, can also remove odors, and is easy to use. Under the condition of relative humidity ≥70%, the concentration should be ≥20mg/m3, and the disinfection time should be ≥30min. Ozone is toxic to humans and corrosive to metals and rubber. When using this method, you must be careful not to stay indoors, and you can temporarily avoid it. After the disinfection is completed, the window is opened and the ventilation is completed before entering the disinfection room.
Chemical methods are commonly used for air spray and fumigation. Commonly used chemical disinfectants are: chlorine-containing disinfectants, peracetic acid, hydrogen peroxide, chlorine dioxide and so on.
When disinfecting air with chemical disinfectants, especially airtight fumigation disinfection, people cannot stay indoors. Although chlorine-containing disinfectants can disinfect the air, they are also required to be used without people.
