Biological clean room air treatment measures
Biological clean room air treatment measures
Because dust particles are often used as carriers of bacteria, the more dust particles in the air, the more opportunities for bacteria to come into contact with them, and the more opportunities for bacteria to attach to them. The sterilization measures in biological clean rooms are mainly By air filtration; a single bacterium is small in size, but in the atmosphere it often...
Text label: biological clean room, clean clean room modular design and installation, air treatment measures
Air treatment measures of biological clean room
Because dust particles are often used as carriers of bacteria, the more dust particles in the air, the more opportunities for bacteria to come into contact with them, and the more opportunities for bacteria to attach to them. The sterilization measures in biological clean rooms are mainly Rely on air filtration; although a single bacterium is small in size, it often exists in the form of a colony in the atmosphere, and it often coexists with the dust particles that provide it with nutrients and moisture; the air filter should have a higher resistance to bacteria and viruses. Filtration efficiency: the bacteria filtration efficiency of high-efficiency filters is close to 100%. For those with low requirements, sub-high-efficiency filters or medium-efficiency filters close to the efficiency of sub-high-efficiency filters can also meet the requirements.
Bacteria are easily contaminated and multiplied on various surfaces in the clean clean room modular. The indoor human body is also one of the main sources of bacteria. Human breathing and speech also spread bacteria. In the clean room, not only ordinary masks, but also high-efficiency filter paper should be used. The mask made can reduce the amount of bacterial dust by 4/5 compared with the former. Disinfection and sterilization method: The dry heat method is a method of heat treatment in dry air. Based on the principle of oxidative destruction under the action of high heat, the temperature generally required is as high as 160°C and the time is as long as 1H-2H; The high-temperature steam sterilization method is based on the principle of coagulating proteins in bacteria under the action of moist heat. Generally, the temperature required is lower and the time is shorter than that of the dry heat method. The electromagnetic radiation method is based on the principles of destroying bacteria and the thermal effect of the absorbed households. Ultraviolet sterilization belongs to this method. Commonly used ultraviolet sterilization lamps, etc., use ultraviolet lamps to directly clothe the clean room, and use the lights before and after work, noon breaks, and shifts to turn on the lights for sterilization, and the time is controlled at about 0.5-1H. , The sterilization effect is good and practical. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean rooms.
Hospital biological clean rooms mainly include clean operating rooms, clean wards, etc. Between clean rooms of different cleanliness levels that are connected to each other, rooms with high cleanliness should maintain relatively positive pressure for rooms with low cleanliness, and the maximum The static pressure difference should not be greater than 30pa, and the whistle should not be generated due to the pressure difference; between the clean rooms of the same cleanliness level that are connected to each other, they should be maintained between the two rooms as required or according to the direction of airflow from the inside to the outside. The pressure difference is slightly greater than 0; in order to prevent the leakage of harmful gases, the pre-anesthesia room or the room with serious pollution should maintain a negative pressure for the adjacent rooms that are connected to each other; the clean area should maintain a positive pressure of not less than 10Pa for the connected non-clean area , The clean area should maintain a positive pressure of not less than 16PA for the outdoor or the area directly connected to the outdoor; the average wind speed of the working face height of the clean operating room operating area and the ventilation times of the clean operating clean room modular are to ensure the required cleanliness and in operation. Do not exceed the specified indicators that must be met for self-purification.
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