Filtronics, Incorporated

EM Pure Reverse Osmosis Systems


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The Problem
More Dissolved Solids Than Desired In A Water Source
Water is never completely free of dissolved solids. It contains varying amounts of impurities which are identified as hardness, alkalinity, minerals, inorganic salts, total dissolved solids or other items.

Removal Of Unwanted Solids
Suspended solids may be removed by clarification-filtration processes. These processes can produce clear water but some colloidal solids and most dissolved solids usually remain.

Dissolved solids may be removed with several techniques. EM-Pure Reverse Osmosis has proven to be the most economical and reliable of these with and without further treatment for higher purity for potable water.

What Quality Should Your Water Be?
The water should test low enough in specific contaminants to be used for the intended purpose and meet federal standards. Every year new contaminants are found in drinking water supplies. Contaminants such as TCE’s, pesticides, nitrates, radio nuclides, radon, and herbicides require the latest treatment technologies to meet these standards.

The Solution
Filtronics EM-Pure Reverse Osmosis System

How Does Reverse Osmosis Work?
Osmosis is the spontaneous passage of a liquid from a dilute to a more concentrated solution across an ideal semi-permeable membrane that allows passage of the liquid but not the dissolved solids. Reverse osmosis is a process in which the natural osmotic flow is reversed. Reversal is effected by the application of pressure to the concentrated solution sufficient to overcome the natural osmotic pressure of the less concentrated solution. When the amount of water passing in either direction is equal, the applied pressure can be defined as the osmotic pressure of the dilute solution having that particular concentration of solutes.

In most cases, 95% of the minerals, salts and other inorganic dissolved solids, such as metals, fluoride, sodium, calcium and alkalinity are removed by reverse osmosis, and the removal of suspended solids is 100%.

In osmosis, pure water diffuses through a semipermeable membrane to dilute the salt solution. The effective driving force is called osmotic pressure. When the system has stabilized, the concentration of salt is equal on both sides of the membrane.

Reverse Osmosis:
Reverse osmosis occurs when the pressure on the salt solution is greater than the osmotic pressure. Fresh water then diffuses through the membrane in the opposite direction and is collected.

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