ultraviolet sterilizer 

cross-flow , easy handling, sterilizing rate reach 99.9% , has a high effective, wide and no secondary pollution function, can constantly  sterilizing. UVC have a power -inactivate with the virus and bacterium in the water, the sterilizing rate can reach 99.99%. UVC HAS a high sterilizing efficiency, when the ultraviolet light reach 3000μW/cm2, the time is within 1s when sterilizing only 1/600～1/10 by chemical way. UVC function: mas water sterilizing, constantly using. Influence for UVC disinfection effect: wave length, Light intensity and time, water deepness, water color, water turbidity, germs q'ty and types.

UV  without any chemicals, no noise, no smell, will not have Side effects with water, creature and  environment. and capital construction cost is ver low, only need to rechange the  ultraviolet radiator and cleaning, not need people watching.