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.
UV Process
Reverse Osmosis Process
700
400
Wavelength(nm)
UVB
280-315
UVA
315-400
UVC
200-280
X-Rays
Ultraviolet
Visible
Infrared
Microwaves Radio
The Reverse Osmosis process, also known as
hyperfiltration, is the finest process known till date. The
process ensures removal of particles as small as ions from
a solution. Reverse Osmosis uses 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, 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.
3
Water Flow Diagram
Electrical Circuit Diagram
100-300 V ~, 50 Hz, 800 mA
LOW PRESSURE SWITCH
SEDIMENT FILTER
SOLENOID VALVE
BOOSTER PUMP
ACTIVATED CARBON FILTER
TDS CONTROL VALVE
RO MEMBRANE
FLOW RESTRICTOR TUBE
UV CHAMBER
POST CARBON FILTER
FLOAT VALVE
WATER STORAGE TANK
NON RETURN VALVE
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