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What factors affect the disinfection effect of spray air showers?
What factors affect the disinfection effect of spray air showers?The disinfection effect of spray air shower is affected by many factors, as follows:disinfectant Types of disinfectants: Different types of disinfectants have different bactericidal spectra and bactericidal capabilities. Chlorine-containing disinfectants have wide spectrum and rapid action, but their stability is poor. Hydrogen peroxide disinfectant has no residual environmental protection, but the killing effect on some spores may be slightly weak. Concentration and ratio: The concentration of disinfectant is the key factor affecting the disinfection effect. The concentration is too low to effectively kill microorganisms. For example, when sodium hypochlorite solution is used for spray disinfection of air showers, the effective chlorine content is less than 500mg/L, which may make it difficult to achieve the ideal disinfection effect. If the concentration is too high, it may cause damage to the human body and the sterilized articles, and may also bring security risks. Expiration date and storage conditions: Improper storage conditions of disinfectants will affect their expiration date and disinfection effect. For example, hydrogen peroxide should be stored in a cool and ventilated place. If exposed to high temperatures and strong light, it is easy to decompose and fail. Equipment performance Spray system: The performance of the spray system determines the atomization effect and distribution uniformity of the disinfectant. Blocked nozzle, insufficient spray pressure or unreasonable spray Angle will cause the disinfectant to be unable to evenly cover the surface of the sterilized object, resulting in disinfection dead corners. Air shower system: the wind speed and air volume of the air shower affect the contact effect between the disinfectant and the surface of the object and the air purification efficiency. The wind speed is too low to allow the disinfectant to fully contact surfaces and blow away dust particles; If the wind speed is too high, the disinfectant may be blown away too quickly, reducing the disinfection time. Filtration system: The filtration effect of the primary, medium and high efficiency filters directly affects the cleanliness of the air. If the filter is blocked or the filtration efficiency is low, the dust particles and microorganisms in the air will increase, which not only affects the disinfection effect, but also may cause secondary pollution to the air shower room. Environmental factors Temperature: Temperature affects the activity and evaporation rate of the disinfectant. Generally speaking, when the temperature is 20℃-40℃, the disinfection effect of disinfectants is better. If the temperature is too low, the disinfectant activity decreases and the disinfection reaction speed slows down. The temperature is too high, the disinfectant volatilizes too fast, and the effective time is shortened. Humidity: Humidity also plays an important role in disinfection effectiveness. When the humidity is 60%-80%, it is conducive to the role of disinfectants. The humidity is too low, the disinfectant dries too fast, affecting its contact with microorganisms and killing effect; Excessive humidity may dilute the disinfectant concentration, and may also cause the formation of water film on the surface of microorganisms, preventing contact between the disinfectant and microorganisms. Space size and layout: The space size and layout of the air shower room determine the scope of action and airflow direction of the disinfectant. The space is too large and the disinfectant may not cover the entire area adequately; Unreasonable spatial layout, such as obstacles or dead corners, will affect the air circulation and the uniform distribution of disinfectants. Disinfected objects Material: The adsorption and reaction of disinfectant on the surface of different materials are different. The metal surface may react with some disinfectants, which will affect the disinfection effect. Plastic, rubber and other materials may have a certain adsorption effect on the disinfectant, and the disinfection time needs to be properly extended. The degree of surface contamination: the higher the degree of contamination on the surface of the disinfected object, the more difficult it is to disinfect. If there is a large amount of organic matter, dust, and other pollutants on the surface, it will hinder the contact between disinfectants and microorganisms, reducing the disinfection effect. Shape and structure: The shape and structural complexity of the object affect the disinfection effect. There are gaps, holes, and uneven surfaces, disinfectants are difficult to fully contact, and stronger spray and airflow are needed to achieve a good disinfection effect. Operational aspect Disinfection time: The disinfection time is too short, the contact time between disinfectants and microorganisms is insufficient, and the bactericidal effect cannot be fully played. Different microorganisms and disinfection scenarios require different disinfection times, generally 30 seconds to 2 minutes. |
