How Reverse Osmosis Water Purification Systems Work

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How Reverse Osmosis Water Purification
Systems Work

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Reverse Osmosis
Reverse osmosis (RO) is a purification
technology that uses a semi-permeable membrane.
This membrane-technology is not properly a
filtration method. In RO, an applied pressure
is used to overcome osmotic pressure, a
colligative properties, that is driven by
chemical potential, a thermodynamic parameter.
RO can remove many types of molecules and
ions from solutions and is used in both
industrial processes and to produce potable
water. To be "selective," this membrane should
not allow large molecules or ions through the
pores (holes), but should allow smaller
components of the solution (such as the solvent)
to pass freely. Osmosis is a natural process.
When two liquids of different concentration are
separated by a semipermeable membrane, the fluid
has a tendency to move from low to high solute
concentrations for chemical potential equilibrium.


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Reverse Osmosis Water Purification Systems Work
Reverse Osmosis is a process in which dissolved
inorganic solids (such as salts) are removed from
a solution (such as water). This is
accomplished by household water pressure pushing
the tap water through a semi permeable membrane.
The membrane (which is about as thick as
cellophane) allows only the water to pass
through, not the impurities or contaminates.
These impurities and contaminates are flushed
down the drain. Ultimately, the factors that
affect the performance of a ro system are
Incoming water pressure Water Temperature
Type and number of total dissolved solids
(TDS) in the tap water The quality of the
filters and membranes used in the RO System


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What A Reverse Osmosis System Remove


A reverse osmosis membrane will remove impurities
and particles larger than .001 microns
A reverse osmosis membrane will remove impurities
and particles larger than .001 microns
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Components Common To All RO System
Cold Water Line Valve Pre-Filter (s)?
Reverse Osmosis Membrane Post filter (s)?
Automatic Shut Off Valve (SOV)? Check Valve
Flow Restrictor Storage Tank Faucet
Drain line


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RO ( Reverse Osmosis ) Accessories
Automatic Shut-off Valves Ball
Valve Bracket
Brass Ball Valve Check
Valve Clamp
Cut-Down Pressure Valve
Faucet Adapter
Flow Restrictors
Liquid Level Control Switch
Plastic Tube
Pressure Switches
Pump Systems
Solenoid Valve

Spanner Wrenches


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Reverse Osmosis (RO) Applications


Reverse Osmosis (RO) Applications
Perchlorate Removal From Drinking Water
Nitrate Removal From Groundwater Perchlorate
Removal From Groundwater Raw Water
Pretreatment Tertiary Wastewater Treatment

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