Applying the Ozone Water Spraying for Inactivating E. Coli bioaerosols

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Huang, Hsiao-Chien^1 ; Huang, Hsiao-Li^2 ; Hsu, Ying-Fang^1 ; Yang, Shinhao^1

Center for General Education, CTBC Business School, Tainan, Taiwan^1

Department of Occupational Safety and Health, Chia Nan University of Pharmacy and Science, Tainan, Taiwan^2

关键词: Bioaerosols;    Decay coefficients;    E. coli;    Escherichia coli (E. coli);    Ozone waters;    Removal efficiencies;    Spraying technology;    Testing chamber;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/5/052027/pdf
DOI  :  10.1088/1755-1315/310/5/052027

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This work applied ozone water spraying to explore the feasibility of inactivating bioaerosol. The inactivating efficiency using ozone water (OW) spraying individually against airborne strains Escherichia coli (E. coli) bioaerosols was evaluated in the testing chamber. The setting air exchanged rate (ACH) in this work were 0.5 and 1.0 h-1. The OW operating concentration of 0.5 and 1.0 ppm were sprayed into the testing chamber for inactivating bioaerosols, respectively. Higher OW spraying concentration showed better inactivating results. The inactivation constant of E.Coli against WO 0.5 and 1.0 ppm spraying under ACH 1.0 h-1 was 0.236 and 0.435 (min-1). Moreover, the bioaerosol removal efficiency would increase with ACH. The inactivation decay coefficient of WO 1.0 ppm spraying against E.Coli was 0.312 and 0.435 (min-1) under ACH 1.0 and 0.5 h-1. The results demonstrated that the WO spraying technology was effective in inactivating bioaerosols.