In order to understand how Reverse Osmosis equipment works, one must look into the physics of osmotic pressure and semipermeable membranes. These simple concepts are at the very heart of Reverse Osmosis design. A semipermeable membrane allows the passage of specific molecules through it. If a concentrated aqueous solution exists on one side of a semipermeable membrane, pure water molecules tend to spontaneously diffuse from the more dilute side of the membrane to the more concentrated side. This is called Osmosis. When, under significant pressure, this process is reversed we have what is known as Reverse Osmosis.
The amount of people that still purchase bottled water for home use never ceases to amaze me. Come on people, it's time to get educated here. You are wasting time and energy, landfill space, and yes, money...Lots of it. Have you ever heard of reverse osmosis? Did you know that most bottled water manufacturers are using reverse osmosis as a means of purifying the bottled water you are drinking?
Reverse osmosis is based on the process of osmosis. Osmosis involves the selective movement of water from one side of a membrane to the other. Reverse osmosis is also known as hyper filtration. It is the same process as used by a human body to filter out contaminants. Particles or impurities can be removed from a solution through the process of reverse osmosis. The solution is passed through a semi-permeable membrane. The semi permeable membrane allows the passage of water but rejects ions like sodium and calcium or contaminants like bacteria or urea. Gore-tex is a common semi permeable membrane. Gore-tex fabric contains an extremely thin plastic film into which billions of small pores have been cut. The pores are big enough to let water vapor through, but small enough to prevent liquid water from passing through.
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