Chlorine inactivation of coxsackievirus B5 in recycled water destined for non-potable reuse
Autor: | Bret S Robinson, Alexandra Keegan, John Mieog, Satiya Wati, Judy Blackbeard |
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Rok vydání: | 2019 |
Předmět: |
Microbiology (medical)
Virus inactivation Victoria 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Coxsackievirus Reuse Wastewater 01 natural sciences Water Purification Potable water South Australia polycyclic compounds Chlorine Turbidity Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology biology Chemistry Public Health Environmental and Occupational Health biology.organism_classification Pulp and paper industry 020801 environmental engineering Enterovirus B Human Disinfection Infectious Diseases Activated sludge Virus Inactivation Disinfectants |
Zdroj: | Journal of water and health. 17(1) |
ISSN: | 1477-8920 |
Popis: | Currently guidelines for disinfection of water with free chlorine, while primarily developed for potable water, are often used for virus disinfection of nitrified recycled water of >1 NTU (Nephelometric Turbidity Unit). More information is needed on the disinfection efficacy of free chlorine for viruses in waters of varying turbidity and pH due to significant reuse of treated wastewater of varying quality. In this study, disinfection efficacy in nitrified/denitrified activated sludge treated wastewater was investigated for coxsackievirus B5 (CB5), an enterovirus known to be highly resistant to free chlorine. The required chlorine contact times (CT) values (mg.min/L) for inactivation of CB5 were established in treated wastewater at 10 °C and of varying turbidity (0.2, 2, 5 and 20 NTU) and pH (7, 8 and 9). CTs were calculated to achieve 1 to 4 log10 inactivation. Robust data is presented in support of the chlorine CT values required to inactivate a chlorine-resistant virus in a range of turbidities and pHs in treated wastewaters. The testing method used a conservative approach and the data presented have been used to develop the free chlorine virus inactivation guildelines for recycled water in Victoria and South Australia, Australia. |
Databáze: | OpenAIRE |
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