Compared with UV disinfection, sodium hypochlorite disinfection has greater advantages in terms of continuous anti-virus, equipment maintenance, etc., and its operating cost is significantly lower, and it has a continuous disinfection effect. Sodium hypochlorite can destroy cyanide ions and benzene rings. It is used to oxidize cyanide-containing wastewater and some industrial heavily polluted wastewater. It can also be used for bleaching of pulp. Dirt.