Reverse Osmosis

Technology

Although the idea of reversing osmosis has been known for over 10 years, the practical application is a recent development. In 1962 the U.S Government funded the first R.O. plant which processed 1000 gallons clean water per day. Today, there are more than 3000 large R.O. treatment plants, each producing more than a million gallons of drinking water each day. In 1991, the U.S. Army bought 8,000 large membranes to their mobile water purification units for troops in Desert Storm. In 1993, the U.S. Government bought another 6,300 large membranes to purify flood water in the Midwest.
Osmosis
Assume a membrane is semipermeable, allowing water to pass through while being closed to dissolved salts. Place a membrane between two compartments in a container as shown in the figure to the right. Then place a salt solution in one half of the container and pure water in the other half. Now a fundamental scientific principle comes into play. That is, two different concentrations of liquids within the same system will try to reach equilibrium (i.e. the same concentration of contaminants) on both sides of the membrane. Of course the only way for this to happen is for pure water to pass through the membrane to the salt water side in an attempt to reach equilibrium is called OSMOSIS.

Reverse Osmosis System

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. When the natural osmotic flow is reversed, water from the salt solution is forced through the membrane in the opposite direction by application of pressure-thus the term REVERSE OSMOSIS. Through this process, we are able to produce pure water by screening out the salts and other contaminants.

Filters
Melt Blown Cartridge- 5 Microns sediment filter consistent for higher dire holding capacity, having more surface area and low pressure. This will remove dust, particles and rust.
Pre carbon filters and post carbon filters - High quality granular activated carbon (GAC) to remove/reduce many volatile organic chemicals (VOC), pesticides and herbicides, as well as chlorine, benzene, trihalomethane (THM) compounds, radon, solvents and hundreds of other man-made chemicals found in tap water. These filters are moderately effective at removing some, but not all, heavy metals. In addition, carbon block filters mechanically remove particles down to 0.5 micron, including Giardia and Cryptosporidium, turbidity and particulates. Although some iron, manganese, and hydrogen sulfide will be removed and enhance the taste.

Whole House Sediment Filters
Sediment filters designed to remove dirt, sediment, rust particles, and other particulates from both city and well water thereby improving water clarity, taste, and odor, and protecting system from damage and pre-mature clogging due to sediment build-up. sediment filters use multi-gradient spun polypropylene filter cartridges. The 100% pure polypropylene media is highly resistant to bacteria and chemicals.
Membrane
It is the process by which water molecules are forced through a 0.0001 micron semi permeable membrane by water pressure. Long sheets of the membrane (TFC - Thin Film Composite) are ingeniously sandwiched together and rolled up around a hollow central tube in a spiral fashion. They are available in different sizes for processing different quantities of water. This process of purification is mainly meant to reduce the 'salt content' from the water.
How Membrane works

The semi permeable membrane consists of several thin layers which are bonded together and rolled in a spiral configuration around a plastic tub (This is also known as a thin film composite or TFC membrane.) It allows water molecules pass through while acting as a barrier to dissolved solids (i.e.: Microorganisms, mineral, chemical etc.). When the feed water stream passes across the surface of the membrane, the EVERSURE molecules penetrate the membrane surface, working their way around the spiral and collecting in the canter tube. The remaining contaminants are concentrated and washed from the surface of the membrane down the drain.