Evaluation of treatment and disinfection of water using cold atmospheric plasma

Zohreh Rashmei, Hamid Bornasi, Mahmood Ghoranneviss
2016 Journal of Water and Health  
In this paper, the disinfection of water is investigated using plasma spark treatment and the results are compared with conventional techniques. Inactivation of the Enterococcus faecalis and Escherichia coli bacteria is considered in the treatment process of water by the plasma spark. For this purpose, many physical and chemical parameters of water are measured and the obtained results demonstrate a reduction of 8-log in colony forming units of E. coli and E. faecalis at 15 minutes and 12
more » ... s, respectively. The results of this research show that no ozone is produced during the plasma spark treatment. Moreover, inactivation of a large number of bacteria without any change of pH shows that pH is not the cause of the bacterial inactivation. It is concluded that the main causes of the inactivation of bacteria in the treated water are H 2 O 2 molecules and the electrical fields generated by plasma.
doi:10.2166/wh.2016.216 pmid:27441856 fatcat:atnvm6x6hrebharpz5xdilvceu