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Stores often offer various models of filters and claim that they provide high-quality water purification. Is it really so? Let's try to figure it out. Systems for Odessa water treatment plant there are desktop, flow-through and jug ones.
1. Jug-type filter. Ego has been sold on the Russian market for about 20 years. The principle of operation is that water is poured into the upper container, which passes through the filter and clean water settles in the lower part.
Water is purified by filter elements in the cartridge: mesh, activated carbon, ion exchange resin. Coal and resin are sorbents, they remove heavy metals, nitrates, chlorine, salts, and chemicals. Activated carbon for filters is made from coconut shells. European manufacturers often use silver-plated coal to clean it from bacteria.
The disadvantage is that the water is filtered slowly. It takes 1 minute to purify 1 liter of water. If the family consists of 1-2 people, the cartridge must be changed once every 1 months.
2. Faucet filter. The disadvantage is that the filter is constantly on the faucet and filters all water, both technical and for cooking.
3. Filter on the faucet with a switch. If desired, water can be used both for drinking and for technical needs. Activated carbon, ion exchange resin and membrane grids are used for filtration. The difference from a jug-type filter is that the water passes under pressure and the time is not enough to effectively clean it of impurities.
4. Desktop filter. Jug-type filter connected to the faucet. If you follow the rule that the speed of water purification is not more than 1 l per minute, then the water is purified quite well.
5. Filter under the sink. It is a set of flasks inside which cartridges are installed. Each of the cartridges is responsible for its degree of cleaning.
6. Filter with reverse osmosis system. It contains a membrane through which water passes under pressure, the mesh size of the mesh allows only water molecules to pass through. The disadvantage is that the output is water that is completely purified from harmful and useful impurities. Doctors recommend drinking no more than 1 glass of such water a day.
7. Filter under the sink with one flask. A membrane is presented here as a filtering element. The filter is designed so that water does not pass under pressure, but by gravity. The disadvantage is that the water flows in a small trickle, but its quality is excellent. In addition, it is possible to set the water hardness, because the kit includes a litmus paper, with the help of which the hardness of tap water is determined and the filter is adjusted.
