Using ultraviolet (UV) light for drinking water disinfection and waste water disinfection dates back to 1910. It is a reliable means of disinfection which involves exposing contaminated water to radiation from UV light. The treatment works because UV light penetrates an organism’s cell walls and disrupts the cell’s genetic material, making reproduction impossible.
A special lamp generates the radiation that creates UV light by striking an electric arc through low-pressure mercury vapor. This lamp emits a broad spectrum of radiation with intense peaks at UV wavelengths of 253.7 nanometers (nm) which research has shown is the optimum UV wavelength range to destroy bacteria.
UV disinfection can remove the threat to health from waterborne Pathogens without the creation of disinfection by products that can be generated from drinking water chlorination. From the common bacteria, E-Coli through the Cryptosporidium Oocysts to Adenovirus, UV disinfection systems are capable of providing effective water treatment to ensure inactivation of these pathogens and ensure drinking water is safe.
Unlike industrial water purification system, these systems are simple to install and requires little supervision, maintenance, or space. Improved safety, minimum service time, low operation and maintenance costs, and the absence of a chemical smell or taste in finished water are some of the major advantages for selecting UV technology over traditional disinfection technologies.
Research has confirmed that UV effectiveness is relatively insensitive to temperature and pH differences.
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