Reverse osmosis (R/O) is a water treatment process in which water is
forced through a semi-permeable membrane that has very small holes or
"pores". Clean water passes through and impurities/contaminants that are
too big to pass through the membrane are left behind and flushed away.
How Does Reverse Osmosis Work?
Reverse osmosis systems purify water by forcing pressurized water
through a water filter membrane. If the raw water being treated comes
from a well or another private source, disinfection and pre-filters (to
remove chlorine and/or particulates/sediment) may be needed in advance
of the R/O unit to remove contaminants that can foul or damage the
Typical Reverse Osmosis Stages:
During the initial filtration stage, tap water or well water
(pressurized by a booster pump) is passed through a particle filter
(a pre-filter) that removes silt, sediment, sand, and clay particles
that might clog the R/O membrane.
The water is then forced through an activated carbon filter that
traps minerals and contaminants such as chloramine and pesticides.
It also removes chlorine, which is important, as chlorine will
shorten the life of the membrane.
Water is transferred under pressure into the R/O module, allowing
only clean water to pass through the small pores in the membrane.
Impurities unable to pass through the membrane are left behind and
flushed down the drain.
Treated water is then sent to a storage tank.
Well Water that contains manganese, hydrogen sulphide or iron should be
pre-treated to extend the life of the membrane.
Reverse Osmosis Water Treatment
Residential R/O Filtration
the sink reverse osmosis water systems
Whole house reverse
osmosis water filters
Commercial R/O Water Filter Systems:
Commercial reverse osmosis