How Does Reverse Osmosis Work?

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With the very real concern today about the quality of your drinking water, it can be confusing to read all the conflicting reviews of the products currently available on the market. The average person will consume 15,000 gallons of water in his lifetime. That's a lot of glasses of water. Did you know that if your city or town water becomes contaminated, in many places the public water company is allowed up to 72 hours before they are required to notify you?

How much impure water would you consume in three days? It's a scary thought, especially with over 700 possible contaminates identified in water sources. Many people have decided to take matters into their own hands by purchasing a home water purification unit. While there are activated carbon systems, ultraviolet approaches, and a few others, the most popular are the steam distillation and the reverse osmosis systems.

Exactly how does reverse osmosis work? Usually connected to your cold water pipe under the sink, the unit forces water to pass through a series of filters, the first being a micron-rated sediment filter. This separates any large particles from the water. Next a bituminous granulated coal filter refuses passage to pesticides, herbicides, chemicals, some chlorine, bad tastes, odors, bacteria, viruses, and other contaminates.

Finally, as the water approaches the reverse osmosis membrane, the pure water passes through very tiny openings, as less pure water drains away. As the water speed slows to one drop at a time, it is collected in a pressurized storage tank. From there it is once more forced, at about 40-60 psi through a 10 inch post coconut shell carbon filter. By the time it touches your lips it is 95%-99% pure.

The other popular system today, steam distillation, operates by relying on gravity to pull down heavier inorganic salts, heavy metals, and bacteria, as well as other contaminates when water is heated to vaporization. Only the 95%-99% pure water rises in vapor form. A heat exchange unit causes the vapor to return to water droplets which are then stored for use. Both the reverse osmosis system and the steam distillation system use about equal electricity and initial and operating costs are similar.

The differences between the two systems seems to depend on to whom you talk. Reverse osmosis supporters remind you that this drinking water filtration system was developed with government funding back in the 1950s. It has undergone improvements in filter quality over the years. They claim that this process is actually used by most bottled water delivery companies.

They insist the system easily installs under your sink with no special plumbing. Opponents argue that filter and membrane replacement becomes expensive, and that valuable nutrients and minerals are also being removed from the water. They contend that the reverse osmosis system will not function as well in locations with hard water or low or varying water pressures. As a consumer, you need to research carefully to choose the best system for your home.

Article Source: http://depositarticles.com/

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