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Water Sterilization on the Go

ITRI’s Portable UVC LED Water Sterilizer System is the world’s first solar-powered flow-water sterilizer for emergency use. It efficiently produces clean water by killing water-borne bacteria with ultraviolet-C (UVC) light-emitting diode (LED) technology. Unlike mercury lamp disinfection systems, ITRI’s sterilizer is mercury-free, energy-saving, compact, lightweight and durable.


The Portable UVC LED Water Sterilizer System is especially suitable for emergency situations lacking electricity, where it can provide clean water in an eco-friendly manner. Its backup battery can deliver 300 to 600 liters of sterilized water during night time. Compact and light, the sterilizer is easily distributed to disaster-affected areas, making rescues more efficient and reducing the risks of water-borne diseases such as diarrhea, malaria, and dengue fever. It also can be used in developing nations, where nearly 1,000 children under the age of five die every day due to diarrhea caused by contaminated water, poor sanitation, and improper hygiene.


ITRI developed the sterilizer using UVC LED and solar-power technology to improve on flow-water purification systems with mercury lamps, which easily overheat, have short lifespans, and whose power requirements exceed the capabilities of a small solar panel. The Portable UVC LED Water Sterilizer System satisfies the Minamata Convention on Mercury, a global environmental protection initiative phasing out the production, import and export of products containing mercury by the year 2020. UVC LEDs have advantages over mercury lamps such as lower power consumption, smaller carbon footprint, and instant on/off switching without warm-up.


The Portable UVC LED Water Sterilizer System uses 60 milliwatts (mW) ultraviolet (UV) lightpower to sterilize contaminated water. It can kill up to 99.9 percent of bacteria at a flow rate of two liters per minute (LPM). The system can be instantly activated whenever there is water flow, saving electricity. It also features a real-time self-monitoring system that indicates the disinfection status, UVC LED intensity, and battery status via a graphical user interface. Datacan be saved in a memory device for review and analysis, and the system can connect with an Internet of Things (IoT) network for smart management and tracking.


From: The Industrial Technology Research Institute, Hsinchu, Taiwan;