Now the economic development has been accelerating, and many industrial fields have also made the same qualitative leap. At present, the application of air purification engineering is also more and more widely, and the technical requirements are also higher and higher. With the establishment of clean operating room and clean workshop, air purification project also began to put on the table. Among them, the representative application fields are microelectronics industry, medicine and health and food industry. Today, I'd like to talk about its main application fields.
Microelectronics industry is a high demand industry for clean room. With the development of large scale integrated circuit (LSI) and vls1, the requirement of dust control is higher and higher. In the process of IC manufacturing, the higher the integration, the thinner the figure size (expressed by line width), the smaller the controlled particle size (usually 1 / 10 of line width) and the lower the dust content. In addition, modern industrial liquid crystal, optical fiber production, the same cleanliness requirements.
China's GMP has been implemented in the whole country, which requires different degrees of cleanliness for the corresponding process and production environment. According to the preparation of raw materials, powder, injection, tablet, infusion production, filling and other processes, the cleaning standards of clean area and control area were formulated. In addition to limiting the size and number of dust particles in the air, there are also clear limits on biological particles (the number of bacteria).
Hospital leukemia treatment room, burn ward, operating room must also take air purification project according to the specific situation, to prevent bacterial infection in the air, control the treatment environment.
Aseptic filling is a typical clean technology application in food industry. The aseptic packaging of food (such as soft packaging fresh juice, fresh milk, etc.) is much better than high temperature sterilization canned food in maintaining the color, aroma, taste and nutrition of food. Aseptic packaging is a process of packaging in a clean environment. In addition to aseptic filling, air purification engineering plays an important role in the cultivation, separation, inoculation and expansion of pure bacteria in the process of food brewing and fermentation, preventing bacterial pollution and improving product quality.
In genetic engineering, medicine, pathology, molecular biology, national defense research, etc., it is usually necessary to operate in a sterile and dust-free environment. On the one hand, samples are required to be contaminated by microorganisms; on the other hand, research materials, such as tumor virus and pathogenic bacteria, are required to be at high risk. If radioactive materials do not overflow, they will endanger the health of operators and pollute the environment. For this kind of experimental operation, two levels of isolation are generally required. In this phase, biosafety cabinets are usually used to isolate workers from pathogens and other dangerous specimens. The second floor is to isolate the laboratory working area from other environments. This kind of laboratory is different from the general clean room, it is in a negative pressure state.
Laboratory animal raising
In order to ensure the long-term safety of drug and food inspection and the reliability of pathological research results, laboratory animals are required to be raised and reproduced in a clean environment. From the point of view of microbial control, the breeding environment of medical and biological laboratory animals can be divided into three types: isolation system, semi isolation system and open system. The first two systems require animals to be sterile (including bacteria, viruses, parasites, etc.), or to carry only a small number of known microorganisms, or not to carry certain pathogenic bacteria, etc.
Air purification engineering is also widely used in aerospace, mechanical manufacturing, instrumentation, industries and fields with high environmental requirements. In fact, the air purification project itself belongs to the environmental protection industry, which is divided into municipal infrastructure construction, factory decoration construction and hospital environmental sanitation construction. It belongs to the environmental engineering of air. Our company's purification project is generally the construction of clean room project. Comprehensive treatment project of noise, harmful gas, dust and sewage.
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