RESEARCH ON THE OZONE STERILIZATION AND REMAINDER POLLUTION IN CLEANROOM AIR

摘要

The high-concentration ozone can be used as disinfectant to kill germ and virus, but the high-concentration ozone has the injury of human body and respiratory organ. After sterilized by ozone in one room, the concentration of the leftover ozone should paid more attention. In this experiment, the ozone was generated continuously by an ozone generator and transferred to a biological cleanroom through the duct of the air-oondition system until the ozone concentration of the cleanroom was reached to the sterilizing value for indoor disinfection. After disinfection period, the air-conditioning and ventilation system were carried out to dilute the indoor ozone to a safe limit. The indoor ozone concentration was monitored continuously. In theory, the mass-balance equation and the first-decay model are opted to predict the ozone concentration of the generation-decay, and the study gets the theoretical decay curve. Furthermore, comparing the theoretical curve with the measuring curve, this paper analyzes the differences and gains the impacted factors of indoor ozone concentration. During the ozone sterilization period, the more attentions should be paid to protect workers in workshops. Through measuring the ozone concentration of the sterilized cleanroom, the research suggests 30 minutes is the safe interval for the indoor ozone concentration to reach the health safe limit (80 parts per billion GBT18883-2002).