The Reverse Osmosis process, also known as
hyper filtration, is the finest filtration process known
till date. The process ensures reduction of particles
as small as ions from a solution. Reverse Osmosis
uses a semi-permeable membrane to reduce 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, treated water is "squeezed"
through the membrane from the concentrated side to
the diluted 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 waste water and thus do not
get accumulated as in a traditional filter.
UV Process
The UV light has shorter wavelength (higher energy) than the visible light. It is called
ultra-violet because it is just beyond violet light in the light spectrum. Technically,
the ultra-violet light is defined to be any wavelength of light, which is shorter than
400 nanometer.
UV rays, which penetrate into the micro-organisms, are absorbed by the DNA of the
pathogen in the water. The DNA is altered in such a way that the pathogen cannot
reproduce itself. Thus, it is essentially killed and cannot cause infection. This process
of DNA modification is called inactivation.
Reverse Osmosis Process
700
400
Wavelength(nm)
UVB
280-315
UVA
315-400
UVC
200-280
X-Rays
Ultraviolet
Visible
Infrared
Microwaves Radio
3
Water Flow Diagram
Electrical Circuit Diagram
4
100-300 V AC, 50-60 Hz
