Everyone knows that it is better not to drink tap water because it is full of various impurities and bacteria harmful to the human body. It is not necessary to hope that water quality will improve. That is why many people purchase special filters that allow to purify water to the level of drinking water.
If you have not bought a water filter, then for sure you are thinking about it. It is better not to save a purchase for a long time, because you can not save on your health. And to facilitate the choice, let's try to figure out what kinds of filters there are.
Filters-pitchers
Perhaps, the most common and available type of filters that is available in almost every home are filter-jugs. They are designed to purify the water that was collected from the tap. Probably the biggest advantage of such a filter is that it can be taken with you wherever you go, for example, to the country house, in order to clear the necessary amount of water at any time.
Filters-jugs are a stylishly designed container, divided into two parts. In the upper part there is a cartridge intended for cleaning water, which under the influence of the force of gravity penetrates into the lower part of the container. The performance of this filter is in the range of 0.1-1 l / min. At the same time, the cartridge can reach 400 liters.
Jug filters are very popular, because they have a low price and are quite suitable for cleaning water for a small family. In addition, the jugs have a stylish design and take a little space.
Filters-jugs can be considered a universal option, since the cartridge, which is very easy to replace, is selected depending on what features tap water has.
The principle of the pitcher filter
Water enters the funnel of the filter and passes directly through the filter cassette, is cleaned of the harmful substances that it contains. Inside the cassette is coconut activated carbon and granular ion exchange resin, due to which the water received is of sufficiently high quality.
Reverse osmosis
The process of osmosis was discovered during the time of metabolism studies in living multicellular organisms. In dodinuclear experiments it was revealed that there are two categories of tissues that pass and do not pass water. Scientists managed to find materials that are able to pass only water, restraining all other particles. These materials are called semipermeable membranes, and the process of passing through them water is called osmosis. Cells of all living organisms have in their composition these semipermeable membranes, which makes it possible for the organism to receive water and necessary useful substances, thereby removing slags and preventing the penetration of harmful substances.
Today, the reverse osmosis system is one of the most effective methods of water purification, which has no tax. Under the reverse osmosis system, it is meant to extrude the streams of water in the opposite direction through the semipermeable membrane. As a result of this plant, it is cleaned of salts, so this system is often used in those cases when it is necessary to desalinate sea water, and also to get a high-quality water for use in the pharmaceutical industry. In addition, reverse osmosis is used to purify water, which is taken for the manufacture of juice, beer, alcoholic beverages.
Correctly using the reverse osmosis system, it is possible to purify water by 99.9%, removing various impurities, salts, heavy metals, harmful microorganisms from it. Installing this system, you can immediately notice the changes. Firstly, on the walls of the vessels, in which the water is stored, bubbles will be seen, since the water is saturated with oxygen. By the same token, you will quickly forget about such an unpleasant phenomenon as scum in pots or crockery.
Water, purified by the reverse osmosis system, is absolutely transparent, crystal clear, has a fresh pleasant taste. If you have too sensitive skin, prone to irritation, wash with purified water, and you will immediately notice improvements. In addition, by purifying water from various salts with a reverse osmosis system, one can avoid such unpleasant diseases as arthritis, urolithiasis, salt deposits in the joints, the cause of which is often low-quality water. Do not forget about the salts of heavy metals, which will help get rid of reverse osmosis.
Principle of operation of the reverse osmosis system
The use of filters, which work on the principle of reverse osmosis, is the most modern and effective way of water purification. The direct cleaning process runs in stages.
First step. The filter, intended for mechanical cleaning, delays the solid particles, the size of which exceeds 10 microns.
The second and third stage. Specialty filters filter water from various chemical impurities, as well as exhaust.
The fourth stage. Water passes through the reverse osmosis membrane.
The fifth stage. Water passes through the peri-angle filter and acquires a pleasant taste and smell.
Flow-through filters for water
Flow-through filters are very popular, as they are economical, compact and well purify water. They consist of several flasks, each of which is equipped with a special filter cartridge. The most popular filters are those that have two or three degrees of purification.
At first, water is mechanically cleaned from silt, rust and other contaminants. In the second filter, which is made on the basis of birch or coconut activated carbon, disinfection of water from harmful microorganisms occurs, as well as removal of salts, phenols, dioxins, chlorine from the liquid. At the third stage, a cartridge is used, designed for fine water purification, whose pore radius is only 1 μm. Such barriers can not be overcome neither by viruses, nor by bacteria, nor by inorganic pollutants.
Flow-through filters, as a rule, are installed under the sink, so they not only will not spoil the interior, but also dozens of useful space in the kitchen. On the surface will be visible only a chrome-plated faucet. The water in this filter is filtered with a sufficiently high speed, about 5 liters per minute.
Flow-through filters consist of non-independent cartridges, so the owner of such a system will be able to select such cartridges that will purify water from pollution that is most important for its terrain, for example, from salts of heavy metals or from particles of oil products.
As a rule, the first filter element in flow-through filters has to be changed more often than other cartridges. Spot filters are great for a large family or for an office.
If you still have not purchased a water filter, perhaps this article will help you to quickly decide on a choice that is so important for your health. It's time to go to clean water!