title: Ultraviolet, chlorine and ozone disinfection of some enteroviruses in drinking water and treated effluents.
abstract: The inactivation efficiency of chlorine, ultraviolet light and ozone were determined for poliovirus type 3, Coxsackievirus type B4 and Hepatitis A virus in drinking water and treated effluent. Ultraviolet was more efficient than the other two disinfectants at wave length 254 nm where no infective virus was detected after 4 min of UV irradiation in both drinking water and treated effluent. Inactivation by chlorine dose more than 25 mg/L was sufficient for studied viruses in both drinking water and treated effluent. Also virus-seeded drinking water was exposed to ozone for 18 min at ozone rate of 319 mg/L/h to obtain the maximum inactivation of PV3, CoxB4 and HAV but about 20 min of ozone exposure was needed for treated effluent. Physico-chemical parameters were measured before and after disinfection assay. No significant changes were observed.
authors.affiliation: Environmental Virology Lab, Department of Water Pollution Researches, National Research Centre, 12311 Dokki, Cairo, Egypt.
authors.forename: M A
authors.initials: MA
authors.lastname: Ali
mesh_terms: D002713:Chlorine / Q000494:pharmacology*; D029822:Enterovirus B, Human / Q000187:drug effects*; D030041:Hepatitis A virus / Q000187:drug effects*; D006801:Humans; D010126:Ozone / Q000494:pharmacology*; D017955:Poliovirus / Q000187:drug effects*; D014466:Ultraviolet Rays; D014876:Water Pollution / Q000517:prevention & control; D018508:Water Purification / Q000379:methods*
chemical_list: D002713:Chlorine; D010126:Ozone