Reverse osmosis water filters for home - why are they needed
Situations when the tap starts run a cloudy liquid with a dubious composition, which also smells unpleasant, is it familiar to you? The problem of high-quality purification of tap water at the moment is becoming urgent. It is worth agreeing that taking risks when health is at stake by using tap water is very expensive.
And buying bottles of drinking water every day is quite expensive and takes up a lot of free time. In order to solve this problem, many different reverse osmosis water filters have been developed for the home. By the way, such installations are in high demand.
But, at the same time, such systems are shrouded in many myths and prejudices. Surely you, like most potential buyers, will be concerned about the question of how reverse osmosis works - the benefits or harm to the human body will be from the use of ideally purified water.
We will give an opportunity to understand the intricacies of membrane-type purification and find out if pure water is really harmful, as they say about it. The article contains the most worthwhile arguments in favor of reverse osmosis and against it, illustrative videos and photos are provided that will help evaluate the real advantages of purified water over a simple tap water.
The possibility of filters that purify water according to the principle of reverse osmosis, completely remove impurities from the water, which is not interpreted by specialists just as an advantage, but sometimes as a disadvantage.
Reverse osmosis has been used as an industrial method for water treatment since the 1970s. To begin with, it was used to desalinate water from the sea. Reverse osmosis is a multi-stage water filtration process that provides the highest level of purification. Regardless of the initial presence of salts in the water, the installation of reverse osmosis will reduce the mineral content to 1-8%, and there will be less organic components, their total volume will be 5%. This technology is used for domestic purposes, and for this they make compact filter systems.
The technology is used on an industrial scale:
In the standard set of filters for purification there are filters with fine and coarse cleaning, a softener, a membrane and carbon filter, and a mineralizer. In such a unit, there may be fewer modules if the water supply system conducts softening and primary water purification.
Reverse osmosis filters get clogged at times and need to be replaced or cleaned. To do this, you just need to unwind the flask and put a clean cartridge or add fresh filling.
In case of low contamination, coarse filters may be rinsed with running water, and in case of large contamination, it is necessary to replace them.Thanks to advances in technology, it is now possible to use these filters at home. The resulting water will be perfectly purified, according to most parameters, its properties will be close to thawed.
Namely, such glacier water is considered the most useful, and also environmentally friendly.
In the process of reverse osmosis, water is purified from the substances dissolved in it at the molecular level. A liquid will pass through a semi-permeable membrane under pressure, only water molecules (and other particles with a smaller or equal size) will pass, and the vast majority of impurities can retain. So, on one side of the membrane, almost crystal water will accumulate.
Reverse osmosis provides a higher degree of liquid purification from contaminants than most common filtration methods.
Special membranes that are used in such filters trap bacteria, viruses, heavy metals, iron, hardness salts and the rest. Since it is a "molecular sieve", they protect consumers from various unpleasant surprises associated with deterioration of the organoleptic and chemical properties of water. Reverse osmosis water filters for a private house have proven themselves well both in domestic and industrial applications. They are durable and highly reliable.
A domestic water purification plant usually includes the following key components:
The first stage of purification makes it possible to remove mechanical impurities, chlorine, many organic compounds from the water. This makes it possible to maximize the service life of the "heart" of the system - we are talking about a membrane that performs basic and subtle water purification.
The basic set of the system for fine filtration and preparation of drinking water contains at least 5 working modules. For a start, water begins to flow from the water supply to the coarse cleaning filter, which is made of foamed polypropylene. Here the water will be cleared of organic and mineral inclusions with a size of more than 5 microns. After that, the water will pass through another polypropylene type filter, but its porosity will be 2 microns.
Then the water enters the cone with a membrane filter.
Here, the purification is already at the molecular level, and at the same time all microbes and viruses that were in the water will remain in it. Not all water passes through the membrane filter. The one that did not have time to pass is diverted through a hose to the sewer, which is connected to the bottom of only such a module. Ultrafine membrane-type cleaning will deprive the water of its familiar and pleasant aroma. In order to restore these properties, a charcoal filter is installed.
Further, the water enters the flask with a mineral type filler, and this is required to saturate the water with useful microscopic elements and minerals.By the way, the latter help to align the acid-base balance.
Postfilters are needed to install additional deep water purification, ionization, as well as to improve taste. Fully treated water enters the storage tank, and then it is supplied through a separate tap for treated water. Usually the crane is included in the delivery set of equipment.
In order for the product to work for a long time, productively and effectively, it is important to determine the pressure in the water supply system, and optimally from 2.8 to 6 atm. If the pressure level is very low, a pump is required, in the opposite situation it is important to consider installing a valve to reduce the pressure. A properly installed device will work properly for a very long time - without leaks, breakdowns, failures. The indicator only requires regular replacement of cartridges.
Such systems need to be changed once every 2-4 years, and pre-filters 2 times a year, finishing filters once a year. You can do such work with your own hands. This is the key to the efficient operation of the equipment, as well as the health of all households. This process is usually straightforward.
Along with the praise, reverse osmosis filters are subjected to devastating criticism.
This method of purification, according to some people, personifies the saying "the best is the enemy of the good." One of the main disadvantages of the installations will be their low performance. Filters are very scrupulous in purification - about 3 liters of tap water will go to a liter of "good" water. Such systems are very wasteful, and they drain up to 3/4 of the main volume of water into the sewer system. This is a big drawback.
Among the minuses, we single out:
But the main drawback is the possible harm to human health. It is this fact that worries consumers.
It is known that water that has passed through such an installation will become almost a distillate. The conclusions of experts regarding the benefits and harms of fluids have always been different and differ even now. Soviet scientists adhered to the fact that there must be natural mineral substances in the water, otherwise harm cannot be avoided. The benefits of distillates can only be said if their use is short-lived. Just because it's great for medical and research purposes doesn't make it that way for the human body.
The constant use of water that has passed through the reverse osmosis filter for the home can disrupt the salt balance, which is one of the the most important metabolic processes in the body. He will be responsible for the correct combination of quality and number in all physiological and anatomical structures. Violation of this balance threatens to a large extent with salt deposition, to a lesser extent - thinning and malfunctioning of the tissue. Such a membrane is an obstacle for salt ions and other microscopic elements that the body needs.Lack of salt will lead to thinning of bone tissue, making bones fragile.
The cartilage tissue also becomes thinner, and they become less elastic, painful sensations appear when moving. Arthrosis may also appear.
Lack of magnesium can cause arrhythmias, muscle cramps, periodontal disease, and arterial hypertension. A low content or even a complete absence of mineral-type substances in water has a terrible effect on the condition of tooth enamel. Such water is not at all ideal, since due to crystal cleansing it does not contribute to the total amount of required nutrients for the body.
This is confirmed by a large number of studies. Water that is purified by reverse osmosis plants is often referred to as "dead" water, which is of no benefit to the body. Despite the fact that the water is completely desalinated, such statements are very loud. A lot of authority data has been collected to say that magnesium and calcium deficiencies do not go unnoticed. Not only does the risk of cardiovascular disease increase, but also sudden death.
Some of the scientists argue that the constant use of soft water with a low calcium content, leads to fractures, pregnancy complications, and neurodegenerative changes. The design of the unit may include a mineralizer that will compensate for all important losses. But the fact is that the process of purified water mineralization does not provide that harmonious combination of microscopic elements, which was in the beginning in the water. There is a possibility that no method in the world for water enrichment is fully suitable. Experts believe that it will be more rational to use those water purification systems that do not require additional measures to improve the quality and taste of the liquid.
The membrane does not catch volatile organic substances, the size of which is less than a water molecule. She passes insecticides and herbicides.
Despite the many disadvantages of reverse osmosis, the advantages cannot be belittled. This is a truly effective water purification system that can handle even very dangerous pollution. Water, wherever it is taken, contains many dangerous elements.
Non-compliance of the consumed liquid with sanitary-chemical, as well as biological standards, has a very negative effect on the well-being and health of a person. The main advantages of water pollution are:
It is saturated with its various microbiological and chemical impurities. Viruses and bacteria can multiply in communal drains, can cause many different serious diseases, including:
- Paratyphoid and typhoid.
- Bacterial rubella.
Such water can also contain toxic elements, nitrates, worm eggs and nitrites.Effluents from industrial enterprises "dazzle" with the periodic table. Phenom, formaldehyde, organic solvents, heavy metals that they contain, cause genetic mutations and cancer formation, can have a teratogenic effect on the fetus. Needless to say, the constant use of water with a similar composition is very detrimental to the human body? For this reason, the use of water purification plants is not a whim, but a necessity.
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