What is better for disinfection of secondary water supply equipment in hotels?

There will be biofilm on the inner wall of the water storage tank and pipeline for secondary water supply, so that the bacteria in the water can not be completely removed. General sterilization and disinfection can only remove the bacteria on the surface, and good sterilization and disinfection effect needs to remove the bacterial membrane. Danish DCW water treatment equipment can remove bacterial membrane and inhibit its regeneration, making the water supply equipment sterile and safe, decomposed after sterilization, safe and green.