Cleanliness: refers to the use of certain special materials, through physical methods to dust and sterilize the air to achieve the purpose of air cleanliness; not only to prevent the internal or external pollution of living particles, but also to control the internal pollution of inanimate particles. It is widely used in hospital operating room, disinfection supply center, ICU, newborn room, general protective isolation ward, burn ward, laminar flow ward and other special areas.
Disinfection: It refers to the physical or chemical method to eliminate or kill all pathogens and other harmful microorganisms except spores in the environment or in the media, or to make the disinfected objects harmless.
Sterilization: refers to the method of killing all the microorganisms (including bacterial spores) on the object. Usually physical methods are used to achieve the purpose of sterilization. Such as dry heat sterilization, radiation sterilization, ethylene oxide sterilization (other methods can not be used) and so on.
At present, there is no comprehensive standard for the construction of Class II environment in domestic hospital construction, such as Class I environment operating room construction, GB50333-2013 "Technical Specification for Construction of Hospital Clean Operating Department". Therefore, there are various methods for the construction of Class II environment, especially for some newly built large hospitals. It often refers to some practices of relevant hospitals. But we must abide by the relevant provisions of the Hospital Disinfection Hygiene Standard.
The provisions include the following:
4.1 Various types of ambient air and surface of objects
4.1.1 The total number of colonies should meet the requirements of Table 1.
The first kind of environment is the diagnosis and treatment place using air cleaning technology, which is divided into clean operation Department and other clean places.
Class II environment is non-clean operation Department (room); delivery room; catheter room; blood disease ward, burn ward and other protective isolation ward; intensive care unit; neonatal room, etc.
Class III environment is the same room for mother and infant; sterilization area for inspection and packaging and storage area for sterile articles in sterilization supply center; hemodialysis center (room); other general inpatient wards, etc.
Class IV environment is general door (emergency) diagnosis and examination, treatment (injection, dressing change, etc.); infectious diseases department outpatient and ward.
The following provisions are the minimum standards that must be met in hospital construction:

The role of air purification: to provide clean and sterile indoor air.
Sterilization: Eliminate harmful microorganisms in the environment.
There are three factors causing infection: the invasion of pathogenic microorganisms, the local environment leading to infection, and the body's anti-infective immune system.
CONCLUSION: The indoor disinfection and scientific management can not be replaced by the room of hospital air purification engineering system.
Established in August 2010, Shandong Aide Purification Engineering Co., Ltd. has devoted ten years to the construction of special departments in hospitals. It is a laminar operation room purification, clean operation room decoration, ICU ward construction, neonatal NICU construction, CCU ward, hospital laboratory, central supply room decoration, laminar flow ward construction, venous configuration center design. Construction of professional enterprises. The main target of service is large, medium and small hospitals with professional contracting qualifications related to purification projects. There are many cases in the industry. Welcome new and old customers to consult. To learn more about the medical purification industry, please pay attention to the Wechat Public No. Aide-188 (Ed Purification and Oxygen Supply)