UV light is a radiation that comes from the sun and has a wavelength shorter than visible light but larger than X-ray. UV disinfection has become a common method to remove bacteria, viruses, and other pathogens. The sunlight has been used for hundreds of years to purify water and preserve food items because sunlight kills bacteria, stopping them from replicating further. The UVC radiation present in sunlight is solely responsible for decontamination. After discovering UV light as a disinfectant, it is available in various forms and devices to be easily used in the disinfection of household items.
UV water treatment is a safe and chemical-free method to purify drinking water. Owing to limitations and safety issues of chlorination, UV is usually utilized in both household and municipal water processing systems. It is a comparatively, easy, and quick method to clean water and consumes low power. It does not leave behind toxic byproducts, which makes it environmentally friendly. The method does not change the color and taste of water and is very manageable as compared to other methods. UV light targets the DNA of the germs, making it inactive. In UV treatment, both visible and invisible microorganisms are removed. It’s a huge advantage that you can clean drinking water at home in a matter of seconds.
Another benefit of UV light disinfection at homes is the sterilization of the kitchen environment and utensils. A UV light reduces the odor and foodborne microorganisms ready to spoil food. UV system can be easily fitted in the exhaust system. Disinfection pipes are helpful in exhausting grease and smoke out of the kitchen, which otherwise piles up in the pipes blocking the whole process. If the grease remains in the pipes, it increases the chances of fire. It allows the people to continue what they are doing in the kitchen, while the whole space is being sterilized by itself. The UV lamp cleans out the kitchen without water and operates along with the exhaust system, reducing cost and energy.
A safer form of UV:
UVC, because of the shortest wavelength, can be dangerous to human beings. It can enter the skin and damage DNA, and it is also harmful to the eyes. UVC is used very carefully considering the extent and timing of exposure of light with human skin. Scientists have discovered the wavelength which can complete the task of disinfection with the same speed and effectiveness. The UVC light with 254 nm
wavelength is safe for human skin and eyes. Another substitute for UVC light is the Far-UV having a wavelength of 222nm. In fact, Far-UV is more efficient than UVC and kills the germs in seconds instead of minutes. Due to the shorter wavelength, it is readily absorbed by the bacteria and viruses and then targets the DNA. The high photon energy allows the Far-UV to destruct the physical structure of the microorganism, which is not done in the case of UVC as it only hinders the replication without destroying them. Therefore, the fear that UVC is quick but dangerous for human health has been reduced by the discoveries of new wavelengths. Using UV disinfection at homes is no longer a risk.
Disinfection of household items:
Disinfection and hygiene should be the priority at home to keep the family clean and safe from virulent and bacterial diseases. Infants and elders specifically are more vulnerable to airborne diseases. Therefore the use of UV disinfection is essential for the health and well being of the people. The UV devices come in handy forms, that can be used to disinfect water bottles, feeders, mobile phones, bedsheets, and many other things that are used daily and are more susceptible to carry germs. UV disinfection and decontamination have made hygiene and safety 100 % possible less effort.