Yes, I have interned in a water plant. Currently, water supply plants in large cities generally use chlorine for disinfection, because chlorine can have a sustained disinfection effect during long-distance water transportation. On the contrary, ozone has a disinfection effect. will disappear within a short distance.
However, more and more data currently show that chlorine disinfection will cause oxidative water pollution. This is what I am studying, about the content of perchloric acid in tap water.
Other water disinfection technologies include ozone disinfection, ultraviolet disinfection, etc. Ozone disinfection is generally suitable for direct drinking water disinfection in the community, or water supply disinfection in the community. Currently, the disinfection costs incurred by using ozone generators are It is relatively high, and the disinfection efficiency cannot meet domestic urban water supply requirements.
Ultraviolet disinfection also has the disadvantages of ozone disinfection, which is high cost and unsustainable effectiveness.
At present, there is really no disinfection method suitable for domestic water supply systems except chlorine disinfection...