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摘要： 将紫外线空气杀菌与中效过滤器结合，运用在某医院的无菌病房。检测效果表明，这种二级过滤与UVGI结合的无菌系统可以达到与采用H14高效过滤器的洁净系统相同甚至更高的空气无菌标准，符合国家关于医院层流病房的空气细菌标准，运行费用低，维护管理方便，可替代高效过滤洁净技术在白血病房中的应用。 关键词： 紫外线 无菌病房 空气含菌浓度 UVGI Application of sterile medical air technology combined with middle efficiency particulate air filter in sterile wards By Xu Huoju★ and Chen Yunfeng Abstract Applies UVGI air sterilization combined with middle efficiency particulate air filter to sterile wards in a hospital. The test results show that the system can reach the same or even higher air sterile standard than that using H14 HEPA filter. This system also corresponds with the national air sterile standard of the laminar flow wards, has low operation cost and it can replace the HEPA filter technology in leukaemia ward. Keywords UVC, sterile ward, bacteria concentration in air, UVGI ★ Shanghai Dowell Purity Equipment Engineering Co., Ltd.，Shanghai，China