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2006•Chinese Journal of DisinfectionRequires access

OBSERVATION ON FIELD DISINFECTION EFFICACY OF AIR-CLEANING SCREEN

Wang Fang

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Abstract

Air-cleaning screen is a new-type air disinfection device using lysozyme germicidal filter medium.In order to know its dynamic air disinfection effect,field disinfection efficacy was observed.Results: Operation of the device for 1～4 hr in ICU could reduce the bacterial count from 1581 cfu/m~3 before disinfection to 163 cfu/m~3,with average bacteria-eliminating rate attaining 90.5% at maximum and air bacteria count cecreasing to 150.0 cfu/m~3 at minimum.After operation of the device for 1 hr,the bacteria count in air of common surgical ward could be reduced from 1025 cfu/m~3 to 400 cfu/m~3,with average bacteria eliminating rate of 73.2% at maximum while the average bacteria count in air of control ward was maintained at about 500～1000 cfu/m~3. Conclusion: The air-cleaning screen has good efficacy in eliminating bacteria.It is thin,safe in use and has little noise.It can be used for dynamic disinfection of air.

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Air-cleaning screen is a new-type air disinfection device using lysozyme germicidal filter medium.In order to know its dynamic air disinfection effect,field disinfection efficacy was observed.Results: Operation of the device for 1～4 hr in ICU could reduce the bacterial count from 1581 cfu/m~3 before disinfection to 163 cfu/m~3,with average bacteria-eliminating rate attaining 90.5% at maximum and air bacteria count cecreasing to 150.0 cfu/m~3 at minimum.After operation of the device for 1 hr,the bacteria count in air of common surgical ward could be reduced from 1025 cfu/m~3 to 400 cfu/m~3,with average bacteria eliminating rate of 73.2% at maximum while the average bacteria count in air of control ward was maintained at about 500～1000 cfu/m~3. Conclusion: The air-cleaning screen has good efficacy in eliminating bacteria.It is thin,safe in use and has little noise.It can be used for dynamic disinfection of air.

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Available abstract

Air-cleaning screen is a new-type air disinfection device using lysozyme germicidal filter medium.In order to know its dynamic air disinfection effect,field disinfection efficacy was observed.Results: Operation of the device for 1～4 hr in ICU could reduce the bacterial count from 1581 cfu/m~3 before disinfection to 163 cfu/m~3,with average bacteria-eliminating rate attaining 90.5% at maximum and air bacteria count cecreasing to 150.0 cfu/m~3 at minimum.After operation of the device for 1 hr,the bacteria count in air of common surgical ward could be reduced from 1025 cfu/m~3 to 400 cfu/m~3,with average bacteria eliminating rate of 73.2% at maximum while the average bacteria count in air of control ward was maintained at about 500～1000 cfu/m~3. Conclusion: The air-cleaning screen has good efficacy in eliminating bacteria.It is thin,safe in use and has little noise.It can be used for dynamic disinfection of air.

Key concepts: Bacteria, Bacterial colony, Air purifier, Microbiology, Environmental science, Biology, Mechanical engineering, Inlet

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