The application can be divided into direct blowing, duct spraying, and central air conditioning. Central air conditioning can be further categorized into centralized air conditioning systems, induction air conditioning systems, and fan coil unit air conditioning systems. In actual production operations, the corresponding chemical addition and disinfection methods are selected based on the type of central air conditioning system. By reasonably utilizing the air supply equipment of the central air conditioning system, the ozone gas generated by the ozone generator is diffused throughout the controlled area via the air supply equipment of the air conditioning system (including fresh air fans). The ozone gas is mixed into the system air through the air conveyance ducts of the central air conditioning system. At the same time, internal circulation is utilized to achieve uniform ozone concentration in the air. Through contact and mixing with the system air, ozone can kill bacteria, infectious viruses, and microorganisms in the environmental air, thereby improving the environmental air quality and ensuring the cleanliness of the environment to meet production requirements. When using ozone gas for disinfection, it can effectively kill various viruses and bacteria. However, additional disinfection measures are required to achieve the desired disinfection and sterilization goals. In practice, it has also been found that ozone can play a role in the bacterial dissolution and dredging of high-efficiency filters, thereby extending their service life.