They are systems that integrate technologies such as UV (ultraviolet light), activated carbon and reverse osmosis water filters.
Water filtration equipment ready to be connected under the sink and in the refrigerator.
Types of water purifiers
There are different types of filters for your kitchen, and each has its important differences.
Purifiers should be placed under your sink are connected to the cold water line. These water filters are usually the most economical, and with very good efficiency to remove contaminants that may bring the water from the municipal network. Another benefit of these purifiers is that they can be easily adapted for use with any water connection in your home. This could include a refrigerator line or an ice maker.
One thing to remember with under-the-sink filters, they use their own faucet, separate from the one you use to wash your kitchen utensils. And you must drill an additional hole to put this faucet in. This is so that the cartridges will last much longer, if the purifier were used to wash everything, they would have to be changed more frequently. It will also allow you to use the hot water from your kitchen sink, because you will not be using the purified water faucet.
Reverse osmosis water purifier
Reverse osmosis (RO) purifiers use a multi-stage filtering process, and being a very closed membrane that produces the best quality of water that exists for drinking, but by producing with a certain slowness the water is stored in a tank to always have water available.
The stages of this equipment are:
Water filter for sediments larger than 5 microns
Two activated carbon cartridge cartridges with mesh to 5 microns (removes organic contaminants and removes chlorine that can damage the reverse osmosis membrane)
Reverse osmosis membrane with a filtration at 10 angstroms, so it removes virtually all organic and inorganic contaminants from water, including microorganisms.
Post in-line activated carbon cartridge.
Reverse osmosis systems are widely recommended as the most effective water purification option because of their ability to treat almost any type of water, even if it contains arsenic or fluorides.
One of the drawbacks of an RO system is the need for the system to be constantly self-cleaning, which causes it to reject a portion of the water entering the equipment. It could be considered a waste of water, but it could be solved if it can somehow be sent to the garden or a nearby reservoir, in the end it is totally safe water. Another thing to consider with an RO system is the installation and costs can be more than other types of under-sink water systems.
Many RO systems are being manufactured with an easier to install design. The cost of the RO system is usually higher than other systems, but remember you are getting higher quality water purification available.
How does a water filters work?
One of the reasons why under sink systems are so popular is the simple design, you don’t have to be filling the system with jugs of water. They are designed to fit under a sink and in a completely concealed closet.
An under sink water filter essentially works like a water purifier as we know it, using the same steps but smaller. The water line coming from your main water supply is connected to the purification system so that the water flows directly through its cartridges and up to your faucet.
How to choose a water filter?
Domestic water filter use various chemicals, activated carbon filtration, UV light, reverse osmosis or a combination of technologies.
Water quality depends on the source and it is advisable to choose a purification system that is well equipped to remove impurities present in the water. The water purifier you select should ideally depend on the spread and type of contamination, coupled with the level of TDS (total dissolved solids) in the water.
The reverse osmosis purifier removes 100% of microorganisms such as viruses and bacteria and up to 99.8% of solid suspension including salt if the membrane is of high quality. Mechanical pressure is used to send the water flowing through a permeable semi-membrane that traps all solids of 0.0009 or more microns.
Reverse osmosis not only frees water from impurities, but also from high saline content. However, reverse osmosis is not always the best purification process.
Osmosis-based filter should not be used where TDS levels are low, as they could result in water that is completely deficient in minerals and therefore unsuitable for drinking.
Reverse osmosis water filters are best suited for water obtained from deep wells, hard and saline water with TDS levels above 500 mg / liter and chemically contaminated water.
To choose the right water filter, it is important to know what impurities are present in your water supply. Then choose the right water purifier, which uses the right water purification to remove those impurities in the water.
There is no point in purchasing expensive water purifiers when you may only need a simple, inexpensive and much more reliable water purifier.