ABSTRACT
Objective To design and develop an air purification system for intensive care ambulances,which can effectively purify the air in the compartment and sterilize the microbes in the air.Methods By integrating titanium dioxide photocatalysts with air filtration materials,an air purification system was designed that was capable of effective sterilization of microbes in the air via photocatalytic oxidation and decomposition,and of effective filtration of particles in the air through HEPA filters.The protection effect was evaluated by air filtration and sterilization tests in accordance with the related national standards.Results The air cleanliness could reach the 100 000 level with bacteria counts no more than 1 CFU per pan for 15 minutes in the ambulance compartment when the air purification system worked normally,which could meet the demands of environmental hygienic standards for intensive care units.Conclusion The air purification system can effectively purify and sterilize the air in the compartment of an intensive care ambulance.The effects of air purification meet the requirements of related hygienic standards,which can satisfy the demands of treatment and intensive care for the victims in the ambulance.
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OBJECTIVE To compare the air sterilization effect of in operating room used by different air sterilization methods.METHODS Four types sterilization methods were used to operating room air.Then sampling monitoring and evaluation were done.RESULTS The qualification rate of air sterilization were 79.17%,62.79%,79.63%,97.22% in peroxyacetic acid fumigating,simple ultraviolet radiation,peroxyacetic acid fumigating combined with simple ultraviolet radiation,ultraviolet light circulation wind air sterilization machine,respectively.The sterilization effect of ultraviolet light circulation wind was better than the others.CONCLUSIONS Ultraviolet light circulation wind air sterilization machine can be used to air sterilization in non-laminar air flow purify operating room.
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OBJECTIVE To discuss the disinfection effect of Laoken KDSJ-Y multi-purpose air disinfecting machine using in the newborn hospital ward for air sterilization.METHODS Standard sample were carried on separately before starting,the starting 60 minutes later,the engine off latter 60 minutes and 120 minutes,after raising and the bacteria number were calculated.RESULTS Dynamic disinfection in room temperature 30-31℃,humidity 68-72%.Room population 10.7,and does not limit in the undertake transfer of personnel situation,starting disinfects 60 minutes to be able to achieveⅡ The kind of disinfection ambient air contains the fungus quantity standard;After before starting disinfection,and engine off,colony quantity continues to increase,cannot achieve toⅡ The kind of disinfection ambient air including the fungus quantity request after 120 minutes,must starting disinfect once more.CONCLUSIONS Laoken KDSJ-Y multi-purpose air disinfecting machine under some person of conditions the dynamic disinfection to be possible in the control air the bacterial content,conforms to the newborn hospital ward 2 kind of ambient air disinfection sanitation standard,suits the promotion.
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OBJECTIVE To observe the sterilization effect of nanometer photocatalysis air sterilizer mounted in hospital.METHODS We carried out a dynamic survey on air average numbers of colony through field experiment and practical operation.RESULTS The field experiment displayed that the air bacterium dissolution rate was 55.64-75.94% and the bacterium content degraded as time extended,after nanometer photocatalysis air sterilizer been used 1-2 h;the result of practical operation in four seasons of the year revealed that the average bacterium colony numbers in each ward region was lower than before sterilizer mounted,the air bacterium dissolution rate was 73-82.3% in the third ward region and 44.5-76.3% in the fourth ward region.CONCLUSIONS It is effective to use the nanometer photocatalysis air sterilizer to sterilize the air in hospital under the condition of inspection.The airflow of the central air conditioning can practice the air sterilization function more validly.
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OBJECTIVE To study the possibility of air sterilization with solution of camphor leaves. METHODS Every six adjacent sickrooms that had same volume from 9 different clinical sectors were randomly selected for testing.Air of all sickrooms were sterilized by atomizing with solution of camphor leaves that was rough made by boiling and filtering and by direct irradiating with ultraviolet ray respectively.And then screened the sterilization effect of two methods respectively by air culture. RESULTS After sterilization with 100% solution of camphor leaves,all sickrooms were in line with standard of class Ⅲ(500 CFU/m~3),and 70% sickrooms were in line with class Ⅱ(200CFU/m~3).Both atomizing with solution of camphor leaves and direct irradiating with ultraviolet ray showed obvious effect,the result of air culture indicated that CFU of microorganisms were significant differrent between pre-sterilization and post-sterilization in both methods(P0.25). CONCLUSIONS Camphor leaves are very effective for sterilization and deserve to spread.
ABSTRACT
On the basis of the theories of air sterilization, the Virobuster steritubes are very effective in the removal and inactivation of airborne bacteria species, viral particles, fungi and spore by using the high-intensity UV lamp and close-in UVC treatment room with high reflecting sputtering aluminum, the sterilization efficiency were above 99.999%～99.999 9% when the atmosphere passed through the germicidal tubes. As a technical breakthrough, the Virobuster steritubes could overcome the problems of traditional air sterilization and decontamination technology, the air sterilization could reach LOG-6 sterilizing effect. By analyzing of the workings principles and structure characteristics of Virobuster steritube, the optimization design of air sterilization and decontamination is set up for our public buildings air and hospital sterile room.