The Reverse Osmosis process, also known as hyper filtration, is the finest filtration process known till date. The process ensures the removal of particles as small as ions from a solution. Reverse Osmosis uses a semi-permeable membrane to remove salts from potable/brackish water. In Reverse Osmosis, water pressure applied to the concentrated side forces the process of osmosis into reverse. Under enough pressure, pure water is "squeezed" through the membrane from the concentrated side to the dilute side. Salts dissolved in water as charged ions are repelled by the RO membrane. The rejected impurities on the concentrated side of the membrane are washed away in a stream of rejected Water and are not accumulated as on a traditional filter.
The UV light has shorter wavelength (higher energy) than the visible light. It is called ultra-voilet because it is just beyond the violet light in the light spectrum. Technically, the ultra-violet light is defined to be any wavelength of light, also called electromagnetic radiation, and is shorter than 400 nanometer.UV-C rays (photons) penetrate micro-organisms and become absorbed by the DNA of the pathogen in the water being treated. The DNA is altered in such a way that the pathogen cannot reproduce and is essentially killed and cannot cause infection. This process of DNA modification is called inactivation.