Abstract
Occurrence of virus in drinking water may induce human health risk. Disinfection is an important barrier for biological safety in drinking water. To compare the inactivation effect of virus induced by different disinfecting processes, the types and characteristics of common viruses detected in aqueous media were firstly introduced, then this study focused on the disinfection processes (free chlorine, chloramine, ozone, chlorine dioxide, ultraviolet) widely used in drinking water treatment process, and reviewed their disinfection mechanisms, impact factors, effects and potential problems during applications. In addition, the influent water quality usually has a significant effect on the virus inactivation, and both the conventional and advanced drinking water treatment processes can enhance the removal efficiency of virus directly and indirectly, thus the multistage barrier process with the coordinated and efficient operation ‘conventional treatment-advanced treatment-disinfection’ was proposed to effectively control the drinking water quality risk induced by viruses and other pathogenic microorganism.
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