Reverse osmosis: harm and benefits of membrane purification of tap water
Used in industry and everyday life reverse osmosis plants are quite complex systems, the design elements of which are several varieties of filters.
Reverse osmosis - what is it?
By this term itself is meant the process by which a solution is forced through a membrane with a decrease in the concentration of a substance contained in it. The technology of �reverse osmosis� was �spotted by man� in nature itself. It is on this principle that, for example, cells of tissues in living organisms function. Their shell is a "membrane", which passes only water molecules and delays everything else.
In industry, filter systems of this type can be used not only for purification, but also for desalination. In some countries, such installations are installed even at sewage treatment plants.
The main element of any reverse osmosis unit is a membrane, through which microscopic holes practically only H2O molecules can pass. The design of household systems of this type also includes:
- 1-2 primary filters;
- accumulator tank;
- several finishing filters.
All design elements of reverse osmosis systems are assembled in cartridges. Filters of primary cleaning are necessary in order not to pass to the membrane all sorts of large mechanical particles. It can be, for example, pieces of rust, sand, earth, etc. If there is no such filter in the system, the membrane will clog very quickly and stop performing its functions.
The storage tank, as can already be judged by its name, serves to collect purified water that has passed through the membrane. The filtering process through this main element of the installation is usually very slow. Therefore, the storage tank can be filled within a few hours.
Finishing filters are designed to remove from the water those impurities whose molecules are smaller than the H2O molecules.Also these elements purify water and from various microorganisms - bacteria and viruses.
Why cleaning is required
The main advantage of reverse osmosis systems is, of course, that they are able to purify water from even the most dangerous contaminants. For city apartments and even for private houses, this may actually be very relevant. Indeed, under the existing environmental situation, clean water not only in centralized water pipelines, but even in private wells, is extremely rare.
The water that flows from the tap in an apartment or house often contains pollution of both organic and chemical origin. Sometimes it also contains viruses or bacteria. Some of these microorganisms can be sources of dangerous diseases:
- typhoid fever;
May contain untreated water and worms eggs. Of the harmful chemicals, it often contains:
- nitrites, ammonia and nitrates;
- all sorts of harmful solvents;
- heavy metals, etc.
According to the results of research, reverse osmosis systems are able to purify water from 98% of all contaminants present in it.No other household filter can boast such excellent performance.
In the event that a reverse osmosis filter is installed in the house, its owners will not have to boil or freeze the water used for drinking or, for example, washing. It is believed that after going through the cleaning in such a system, water can be safely used even for the preparation of cereals for babies.
There is the use of filters of this type and another plus. Water that has undergone such purification, under any circumstances does not cause people allergies. Even newborn babies can bathe in it without boiling it beforehand.
Also, the use of such water can significantly extend the service life of various household appliances - kettles, irons, thermopots, washing machines. Due to the lack of salt, when it is applied to the walls and heating elements of household appliances does not form scale.
Another advantage of using reverse osmosis plants is the possibility of preparing very tasty food. Filters of this variety remove all components from the water, interrupting the taste of all sorts of dishes and drinks.Coffee and tea, prepared in the same way purified water, for example, turn out to be extremely fragrant.
The main disadvantage of using reverse osmosis systems
The benefits of using filters of this type in everyday life can thus be obtained simply enormous. However, unfortunately, the use of such systems has a reverse negative side.
Practically all extraneous substances are removed from the water passing through the filters and membrane of such installations. That is, it becomes almost a distillate. Opinion from doctors about the benefits and dangers of such liquids, meanwhile, strongly differ.
Soviet doctors, for example, considered distilled water to be absolutely unhealthy. And today, many doctors believe that high-quality drinking water must necessarily contain all sorts of natural mineral substances. Useful distillate for humans can only be subject to short use.
What consequences can shortage of salts cause?
Some doctors believe that the regular use of reverse osmosis water purification can threaten the violation of the body's mineral balance.This, in turn, is fraught with:
- the deposition of salts in the tissues;
- deterioration of bone tissue;
- the development of arthrosis;
- the development of muscle cramps;
- deterioration of tooth enamel, etc.
A deficiency of potassium and magnesium can lead to the development of serious diseases of the cardiovascular system and even to sudden death.
So buy or not a reverse osmosis system?
Unfortunately, there have been no large-scale studies on the health insecurity of the treated water in the systems of this type of water. Consequently, to say with certainty whether it brings more benefit or harm to the human body, unfortunately, is impossible. So, the owners can purchase reverse osmosis systems for an apartment or house at their own risk and peril.
Most property owners believe that reverse osmosis systems are still more useful than harmful. Some doctors hold the same opinion. After all, it is known that most of the necessary salts a person receives is not from water at all, but from food. Therefore, it is more or less safe to use such filters.In any case, water of this type of installation is actually very well cleaned from various kinds of pollution and pathogens.
In addition, the problem of the absence of salts in the water purified in this way can be solved very simply nowadays. To do this, you just need to purchase a reverse-osmosis filter of a special design - supplemented with a mineralizer. In installations of this type, all the salts necessary for the human body are added to the water that passes through the membrane and the filters for final purification in the final stage.
What to look for when buying
Thus, to acquire the owners of houses and apartments for water purification today is a reverse osmosis system with mineralizers. Of course, such a harmonious combination of salts, as in natural water, such structures can not provide. But the potential harm from the use of distillate to reduce they are still able to significantly.
When choosing a reverse osmosis system should also pay attention to the brand of the manufacturer. It is believed that acquiring such filters is only from well-known reputable companies.The fact is that unscrupulous manufacturers can use low-quality materials for the production of reverse osmosis plants that can release harmful substances into the water.
Also, when buying, you should pay attention to what filters are included in the system. In particular, this concerns the reverse osmosis membrane itself. It is believed that the best performance currently differ membrane Filmtec. They cost quite expensive, but at the same time they purify the water almost flawlessly.
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