Inactivation Effect of Infectious Virus by UV irradiation at Water Environment
Journal of Bacteriology and Virology
; : 355-361, 2004.
Article
em Ko
| WPRIM
| ID: wpr-138059
Biblioteca responsável:
WPRO
ABSTRACT
The effective inactivation of microorganisms in drinking water by Ultraviolet (UV) irradiation is regarded as a new low-cost water treatment method shoeing high removal rate of relatively stable infectious virus particles including poliovirus. In the present study, we examined virus inactivation by UV in various water environments. Samples were collected from finished water and surface water, and tested for turbidity. UV dose of 18, 22, 30, 36 and 40 milli-Joule (mJ)/cm2 were used by combination of 2 mW/cm2 UV intensity and time of 9, 11, 15, 18 and 20 second. Depths of water were fixed at 0.37 cm and 8 cm, and virus titers were shown by plaque forming unit (PFU). Poliovirus was inactivated to 99.0% by 18 mJ/cm2 of UV dose in the condition of 0.08 Nephelometry Turbidity Unit (NTU) and 8 cm depth of water. Poliovirus at 30 mJ/cm2 of UV dose under the same condition was inactivated to 99.7%. Furthermore, Poliovirus at 56.60 NTU and 8 cm depth of water was inactivated to 92.0% and 98.5% by 18 mJ/cm2 and 30 mJ/cm2 of UV dose, respectively. The degrees of virus inactivation were dependent upon the UV dose, the turbidit, y and the depth of water. In conclusion, introduction of UV disinfections can be considered in drinking water purification systems in case reasonable engineering support is possible.
Palavras-chave
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Sapatos
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Vírion
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Água Potável
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Água
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Purificação da Água
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Poliovirus
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Inativação de Vírus
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Nefelometria e Turbidimetria
Idioma:
Ko
Revista:
Journal of Bacteriology and Virology
Ano de publicação:
2004
Tipo de documento:
Article