Reverse Osmosis Information

Water Purification

Q: WHAT IS THE ACTUAL PROCESS OF REVERSE OSMOSIS?

The raw tap water first flows through a 5 micron sediment FILTER(1) to remove dirt, rust and other sediment. The water then flows into a Carbon Block cartridge FILTER(2) which takes out 98% of the chlorine and organic chemicals. The next stage of the process is FILTER (3) a 1 micron sediment filter to filter multi-chemical compounds sand and rust as well as some cysts and bacteria. Then (4) The Reverse Osmosis membrane (TFC) which will separate 95-99% of the dissolved contaminants from the water molecules. The contaminants are then washed down the drain. The next stage of the Reverse Osmosis process is the small Carbon Filter(5) that removes the remaining traces of chemicals, tastes and odours.

Q: WILL R.O. REMOVE SODIUM FROM THE WATER?

YES. Reverse Osmosis was originally designed to make seawater drinkable for the navy. It is ideal for anyone on a low sodium diet.

Q: DOES R.O. REMOVE BACTERIA? CRYPTOSPORIDIUM?

YES. An R.O. membrane has a pore size much smaller than bacteria virus, pyrogen or the cryptosporidium parasite. When functioning properly it will remove all micro organisms from tap water and produce sterile water.

Q: WHAT IS THE MEMBRANE AND HOW DOES IT WORK?

The membrane consists of several thin layers or sheets of film that are bonded together and rolled in a spiral configuration around a plastic tub.(This is known as a thin film composite or TFC membrane. The material of the membrane is semi permeable; it allows water molecules to pass through while acting as a barrier to dissolved solids i.e. mineral chemical contaminants. When the feed water stream passes across the surface of the membrane, the purified molecules penetrate the membrane surface, working their way around the spiral and collecting in the centre tube. The remaining contaminants are washed from the surface of the membrane down the drain.

Q: WHERE IS THE R.O. DRINKING WATER SYSTEM INSTALLED

Usually underneath the kitchen sink.

Q: WHAT IS THE REVERSE OSMOSIS SYSTEM?

It removes 95-99% of all the mineral and chemical contaminants from raw tap water using the principle of reverse osmosis. It gives you the purest drinking water with the convenience of a tap mounted on your kitchen sink.

Q: HOW DOES REVERSE OSMOSIS DIFFER FROM A WATER FILTER?

Ordinary water filters use a screen to separate only particles of dirt sediment from water. Reverse Osmosis employs a semi permeable membrane that removes not only particles but also an extremely high percentage of dissolved contaminants….. Molecule by Molecule from raw tap water.

Reverse Osmosis is the reversal of the natural flow of osmosis. In a water purification system, the goal is not to dilute the salt solution, but to separate the pure water from the salt and other contaminants.

Q: WHICH CONTAMINANTS DOES THE REVERSE OSMOSIS PROCESS REMOVE?

The Classico Reverse Osmosis system contains a quality carbon filter, which will remove more than 98% of organic chemicals from the water. These include THM's(chloroform), DBCP, lindane, TCE's(trichloroethylene), PCE's(tetrachloroethylene), carbon tetrachloride chlorine. In addition to these organic chemicals, below is a partial list of other contaminants removed by the TFC membrane. The removal percentage shown below is conservative.

TYPICAL THIN FILM COMPOSITE(TFC) MEMBRANE REJECTION RATE

Material/Element
% Removed 
Material/Element
% Removed 
Barium
97%
Potassium
92%
Bicarbonate
94%
Radium
97%
Cadmium
97%
Selenium
97%
Calcium
97%
Silicate
96%
Chromate
92%
Silver
85%
Copper
97%
Sodium
92%
Detergents
97%
Strontium
97%
Fluoride
90%
Sulfate
97%
Lead
97%
PCB's
97%
Magnesium
97%
Insecticides
97%
Nikel
97%
Herbicides
97%

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