In order to provide safer and safer water, it is necessary not only to filter and disinfect chlorine, but also to inactivate chlorine resistant bacteria (Cryptosporidium, etc.) by ultraviolet rays. At present, high power ultraviolet mercury lamp has been widely used in this field. However, as mercury is toxic to human body and harmful to environment, more environmentally friendly light sources are needed. Deep UV LED, can realize mercury free, can provide safer, safer water sterilization technology. In addition, due to the long service life at the same time, the use of deep UV LED also helps to reduce the use of environmental resources.

Even if the water has been fully purified, the risk of secondary pollution is high when it is in the pipeline or water tank for a long time. The ultraviolet mercury lamp has a large volume and is not easy to be used for local disinfection. In this regard, the common countermeasure is to discharge water regularly.

Deep UV LEDs are more compact than mercury lamps and are suitable for small spaces. It has the characteristics of low power consumption and long life. It is expected to be used in every place where water passes through, such as water dispensers, beverage vending machines, coffee machines, dental chairs, intelligent toilet seats and ice makers.

After multiple disinfection and purification of tap water, there is usually no problem in water safety. However, when water passes through pipes and taps, there is a risk of secondary pollution. Therefore, water purification equipment is becoming more and more popular all over the world. However, the filtration performance of water purification in general water purifiers is lower than that of professional water purification equipment. In addition, their performance will decline with the increase of service time.

By using deep UV LED in water purifier, more safe disinfection can be achieved. Moreover, the LED service life is more than 10000 hours, which can reduce the risk of performance degradation, and does not need to be replaced frequently.