As you probably know, reverse osmosis is the method most commonly used to treat household drinking water. What this means is the elements in water that exist naturally, such as anything that causes an unpleasant odor or taste are reduced. It is also used to treat water that may have contaminants that would make it unsuitable for drinking.
How the process works
Reverse osmosis is also called ultra filtration because it moves water through a membrane. The membrane has very small openings that cannot be seen without the aid of a microscope. The water passes through these openings and large items cannot. Sometimes these systems use an electric shock that helps to keep chemicals from coming through.
This is called rejecting the contaminant. When the rejection rates are not set high enough, they may allow some elements to pass through that are not desirable. The rates need to be high enough to reduce toxins or undesired elements to a safe level. There is not always only one contaminant. Sometimes there may be several. All rates have to be reduced.
Does reverse osmosis make water safe to drink?
Reverse osmosis is used because it has been proven to work on both a commercial level and a residential one. One such method can remove salt from seawater. The household variety of reverse osmosis systems put out anywhere from 2 to 10 gallons of treated water a day. If the correct installation is used, these systems can remove many undesirable elements from drinking water, thus reducing the need to buy water, especially for drinking.
Do not buy a unit to treat your water until after it is tested and you are aware of what type of treatment you need. Different systems treat water for different contaminants and you need to find the right one for your water needs.
What Are the Disadvantages of This System?
When you use reverse osmosis for treating your water, it will only treat anywhere from 5% to 15% of the waster it takes in to the system. The remaining water is expelled as wastewater. When it comes to reverse osmosis for home use, they do an excellent job. However, business units require a completely different approach.
The household model rejects the water that contains waste. When this is discarded, it usually goes out through the household drains. It can put a strain on a septic tank because they normally put out 40 to 90 gallons of wastewater a day. This system wastes a lot more water than it puts back.
If you use well water, it can cause the pump to run constantly, thereby running your power bill up to astronomical rates. This also will cause a very high water bill if you do not have a well and depend on city or town supplied water.
Reverse osmosis can be beneficial to remove contaminants from your water and make it safer to drink. However, this process also has drawbacks. Investigative work should be done on the type of system you need before purchasing one.
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