Disinfection Effect Evaluation of Household Air Cleaners

Objective To compare the effect of two types of air cleaner on removing natural bacteria in air.

Methods Two types of representative household air cleaners, including 8 sets of composite filter type air cleaner and 6 sets of UV-ozone type air cleaner, were selected to test the disinfection effect according to the Technical Standard for Disinfection(2002) and to evaluate the effect of disinfection according to the Antibacterial and Cleaning Function for Household and Similar Electrical Appliances-Particular Requirements of Air Cleaner(GB 21551.3-2010) and Technical Standard for Disinfection(2002). The data were analyzed by SPSS statistically.

Results Both air cleaner types were qualified with the standards in GB 21551.3-2010, but the qualified rate of composite filter type air cleaners and UV-ozone type air cleaners based on the standard of Technical Standard for Disinfection (2002) was 50% and 88%, respectively. Statistical analysis results showed that no significant difference on the interaction of time and group except cleaning time; it means that the effect of disinfection would be better with increasing the time of running cleaner.

Conclusions The disinfection effect of UV-ozone type air cleaner was not good while using UV only, and some ozone could be remained in the air. It would be better to choose composite filter type air cleaner for cleaning in household, which could remove both microorganism and particles in the air.