Water purification by reverse osmosis. Installation of reverse osmosis filters. Possible malfunctions of reverse osmosis systems Where harmful impurities come from

Reverse osmosis is the most common deep cleaning technology today. tap water. It is based on the use of a partially permeable membrane, which is able to purify water from salts and other unwanted inclusions.

The principle of water treatment method reverse osmosis quite simple: under pressure, water molecules pass through the “sieve” of a semi-permeable membrane, then through the final carbon filters, where foreign odors and tastes are finally removed from the water, and its acid-base balance is normalized. The output is ultra-filtered water, completely suitable for drinking and cooking.

All larger particles of the source water are retained and sent to the drainage (sewerage) through the reverse osmosis system.

What to check in a reverse osmosis system if the filter is not working correctly

Structurally, this filtration system consists of several cartridges with carbon filters and membrane, as well as a tank for purified water.


Reverse osmosis systems, like any other filter elements, can become clogged over time, some of its elements may not work correctly, causing the filter performance to decrease.

If the filter makes extraneous sounds, vibrates, runs slowly, does not drain water, or, conversely, sends a large amount of water to the drain, then the following parameters should be checked:

• Water pressure in the plumbing- the most common cause of reverse osmosis filter failures. It should be at least 2.5-3 atmospheres (from different manufacturers different requirements to this setting). At lower pressures, the performance of the system drops sharply - water is drawn into the tank very slowly. In this case, a large amount of water will go to the drain.
• Permeability of pretreatment cartridges. In case of any interruptions in the operation of the reverse osmosis system, it is necessary to measure the pressure before and after the pre-filter, since clogged pre-filters reduce the pressure on the membrane.
• Tank pressure. Initially, all tanks are pumped up at the factory (in an empty tank, the pressure should be in the range from 0.25 to 0.6 atm). Depending on the pressure in the water supply system, it may be necessary to adjust the pressure in the empty tank.
• The operation of the valve that blocks the discharge of water. When filling the tank with purified water, the discharge of water into the drain must stop. If water continues to leak into the sewer, then the problem is in the valve.

Typical failure cases and methods for their correction

In the event of serious problems (damage to the membrane, leakage of the tank, etc.), it is required reverse osmosis repair. However, very often malfunctions are local in nature and you can fix them yourself.

Here is a list of the most common problems and ways to fix them:

1. Water constantly flows into the drain.

Possible reasons:

• insufficient pressure - if the actual inlet pressure is lower than required by the filter manufacturer, then a booster pump must be installed;
• replaceable filter cartridges are clogged - they need to be replaced;
• the shut-off valve is faulty - if, with the tap on the storage tank closed, even after a few minutes, water continues to flow out of the drainage tube, the shut-off valve needs to be replaced.

1. Leaks.

Possible reasons:

• non-hermetic connection of tubes - the edges of the tubes are unevenly cut or they are not inserted all the way;
• loosely tightened threaded connections - check and tighten all available nuts;
• there are no sealing rings on the connections - install;
• high pressure (above 6 atmospheres), sudden surges - install a reduction gear in front of the first prefilter;

1. The tank is not full.

Possible reasons:

• the first connection of the system - the tank is filled within one and a half to two hours;
• clogged cartridges and / or reverse osmosis membrane - replace them;
• the check valve in the membrane flask is clogged - unscrew and rinse under running water, put in place;
• clogged flow restrictor drainage water- make a replacement;
• too high or insufficient pressure in the tank - all water is drained from the tank and using car pump with a manometer check the pressure in the nipple. At high pressure in the pipeline (3.5-6 atmospheres), the pressure in the tank can be 0.5-0.6 atm. If there are no more than 2 atmospheres in the water supply, then in the tank it can be lowered to 0.25-0.4 atm. High inlet pressure can cause noise and vibration during system operation. If the pressure in the water main is below 2.5 atm, filter manufacturers recommend additionally installing a booster pump.

1. Water flows very slowly:

• low pressure on the main pipeline - if the inlet pressure is lower than required by the instructions, a booster pump must be installed;
• low pressure in the tank - check and correct;
• tubes are pinched - check, eliminate kinks;
• clogged cartridges and / or reverse osmosis membrane - replace them;
• too much cold water on delivery - working temperature- +4-40°С.

1. Water comes out of the faucet white color - a sign of the presence of air in the system, after a few days of osmosis operation, the problem will disappear.

1. Water after filtration has an unpleasant taste (color, smell).

Possible reasons:

• the order of connecting the tubes is violated - compare with the diagram in the instructions, correct if necessary;
• the membrane is clogged and / or the life of the cartridges has ended - replace it;
• not all the preservative has been washed out of the tank - empty the tank several times and refill it.

1. Noise and vibration during system operation, water does not enter the drain:

• high pressure (more than 6 atmospheres), sharp jumps - it is required to install a reduction gear in front of the first prefilter;
• the water flow restrictor to the drain is clogged - remove the blockage or replace the restrictor.

VIDEO INSTRUCTION

Membrane test

The reverse osmosis membrane may fail earlier than the declared resource for the following reasons:

1. too contaminated source water.
2. low pressure (in this case, excess water passes through the membrane).
3. Concentrate flow restrictor defective.

To check the performance of the membrane, the amount of water going to the drain and the amount of treated water should be measured. It is considered normal reverse osmosis efficiency 5-15%, i.e. 85-95% of the water goes to the drain.

The easiest express way to reliably check the performance of the membrane is to purchase a TDS meter. This small salt meter, worth about 1000 rubles, allows you to find out the content of impurities in water.

After osmosis, the TDS meter should show no more than 15 units. If the indicator is higher, then the membrane is not working efficiently and needs to be replaced.

The following are common causes of malfunctions and how to resolve them.

Water from the system is always drained into the sewer

To verify this, you must first close the tank - turn the lever under the sink 90 degrees relative to the pipe. If after half an hour the water also goes into the drainage, you need to look for the reasons:

• For proper operation of the system, a pressure of 3-4 atmospheres is required. If it is higher, then it is better to purchase a gearbox that aligns it. With low pressure, put the pump.
• The reverse osmosis membrane should normally pass water in a thin stream - no thicker than the little finger. Otherwise, it should be replaced;
• The 4-way valve stops the flow of water into the tank if the tap is closed. When this does not happen, a new valve is required;
• The check valve of the system must prevent the water from draining when the tank is full. Needs to be replaced if it does not perform its function.

Purified water has an unpleasant taste

The most common cause is stagnation of water in the cleaning cartridges or in the tank itself. In the first case, it is necessary to drain about 1 liter of water before use, or use a bioceramic cartridge daily.
If the taste of water is still unpleasant, then the water has stagnated in the tank. The post-carbon cartridge needs to be replaced urgently. Or completely renew the water in the tank, which must be done monthly. In general, it is worth calculating the estimated water consumption - for two people, an 8-liter tank is enough.

Weak water pressure from the system faucet

Perhaps this is due to the operation of the tank itself, because the cleaning system is slow and for a large number a reservoir is required. If there is no water in the tank, the reverse osmosis water filter works in vain. You should check if there are any obstacles to the water supply to the tank, fully open the tap to it. If everything is in order, then the tank itself is faulty.

Water is not drawn into an empty tank

The reason may be in the pressure, which can be increased with a pump.

Water does not flow when the tank is full

You should check the serviceability of all taps - if everything is in order, then the pressure inside the tank is too low. Outside, on the side of the tank itself there is a cap, under it there is a nipple for air supply. You can thus pump up the pressure up to 1 atmosphere.

Slowly draws water from the tap of the system

Main reasons:

• The time has come to replace the filter - due to heavy pollution, the water passes through the system too slowly;
• Low water pressure in the system. Again, you need to install a pump.
• The membrane in the system is faulty;
• Blockage in the filtration departments after the membrane. When water flows normally up to the membrane, it is necessary to clean all parts of the filter after it.

The main criteria that should be considered for the correct operation of the reverse osmosis system

To prevent system malfunctions, important aspects must be considered before installation:

1. Hardness of water;
2. General mineralization of water;
3. Pressure (3-4 atm);
4. t ° of water when supplying (from 15 to 25 degrees)

Currently, filters operating on the principle of reverse osmosis are becoming increasingly popular among consumers. Such filters have a special membrane, and the movement of water through it from a more concentrated solution to a less concentrated one.
The reverse osmosis process has been used as a method of water purification since the early 60s. It was originally used to desalinate sea water. Today, according to the principle of reverse osmosis, hundreds of thousands of tons of drinking water per day are produced in the world.
Improvement in technology has made it possible to use reverse osmosis systems at home. To date, thousands of such systems have already been installed in the world. The water obtained by reverse osmosis has a unique degree of purification. By its properties, it is close to the melt water of glaciers, which is recognized as the most environmentally friendly and beneficial for humans.
The phenomenon of osmosis underlies the metabolism of all living organisms. Thanks to him, nutrients enter every living cell and, conversely, toxins are removed.
The phenomenon of osmosis is observed when two saline solutions with different concentrations are separated by a semi-permeable membrane.
This membrane allows molecules and ions of a certain size to pass through, but serves as a barrier to substances with molecules bigger size. Thus, water molecules are able to penetrate the membrane, but salt molecules dissolved in water are not.
If there are salt-containing solutions with different concentrations on opposite sides of a semi-permeable membrane, water molecules will move through the membrane from a weakly concentrated solution to a more concentrated one, causing an increase in the liquid level in the latter. Due to the phenomenon of osmosis, the process of water penetration through the membrane is observed even when both solutions are under the same external pressure.
The difference in the height of the levels of two solutions of different concentrations is proportional to the force under which water passes through the membrane. This force is called osmotic pressure.
In the case when an external pressure exceeding the osmotic pressure acts on a solution with a higher concentration, water molecules will begin to move through a semipermeable membrane in the opposite direction, that is, from a more concentrated solution to a less concentrated one.
This process is called reverse osmosis. All reverse osmosis membranes work on this principle.
In the process of reverse osmosis, water and substances dissolved in it are separated at the molecular level, while almost perfectly pure water accumulates on one side of the membrane, and all impurities remain on its other side. Thus, reverse osmosis provides a much higher degree of purification than most traditional methods filtration based on the filtration of mechanical particles and the adsorption of a number of substances using activated carbon.
All reverse osmosis membranes work on this principle. The process of reverse osmosis is carried out on osmotic filters containing special membranes that trap organic and mineral impurities dissolved in water, bacteria and viruses. Water purification occurs at the level of molecules and ions, with a marked decrease in the total salt content in water. Many home reverse osmosis filters are used in the US and Europe to purify municipal water with a salt content of 500 to 1000 mg/l; high pressure reverse osmosis systems purify brackish and even sea water (36000 mg/l) to the quality of normal drinking water.
Reverse osmosis filters remove Na, Ca, Cl, Fe, heavy metals, insecticides, fertilizers, arsenic and many other impurities from water. "Molecular sieve", which are reverse osmosis membranes, retains almost all impurity elements contained in water, regardless of their nature, which protects the water consumer from unpleasant surprises associated with inaccurate or incomplete analysis of source water, especially from individual wells.
In the process of reverse osmosis, water and substances dissolved in it are separated at the molecular level, while almost perfectly pure water accumulates on one side of the membrane, and all impurities remain on the other side of the membrane. Thus, reverse osmosis provides a much higher degree of purification than most traditional filtration methods based on the filtration of mechanical particles and the adsorption of a number of substances using activated carbon.
The main and most important element of reverse osmosis plants is the membrane. The original water, contaminated with various impurities and particles, passes through the pores of the membrane, which are so small that pollution practically does not pass through them. In order to prevent the membrane pores from clogging, the inlet flow is directed along the membrane surface, which flushes out contaminants. Thus, one input stream is divided into two output streams: a solution passing through the membrane surface (permeate) and a part of the initial stream that did not pass through the membrane (concentrate).
The reverse osmosis semi-permeable membrane is a composite polymer of uneven density. This polymer is formed from two layers inextricably linked together. An outer very dense barrier layer about 10 millionths of a cm thick rests on top of a less dense porous layer that is five thousandths of a cm thick. pass through the membrane, creating a permeate flow. The quality of the permeate is comparable to the quality of demineralized water obtained by the traditional H-OH-ionization scheme, and surpasses it in some parameters (oxidizability, silicic acid, iron content, etc.).
The reverse osmosis membrane is an excellent filter and theoretically the content of dissolved minerals in the pure water obtained as a result of filtration should be 0 mg / l (that is, they should not be at all!), regardless of their concentration in the incoming water.
A reverse osmosis membrane is indispensable for ridding water of microbes, since the pore size of the membranes is much smaller than the size of the viruses and bacteria themselves.
In fact, under normal operating conditions, 98-99% of the minerals dissolved in it are recovered from the incoming water. In the pure water obtained as a result of filtration, 6 - 7 mg / l of dissolved minerals remain.
Minerals dissolved in water have an electrical charge, and a semipermeable membrane also has its own electrical charge. Due to this, 98 - 99% of the mineral molecules are repelled from the reverse osmosis membrane. However, all molecules and ions are in constant, chaotic motion. At some point, moving oppositely charged ions are at a very close distance from each other, they are attracted, their electric charges are mutually neutralized and an uncharged particle is formed. Uncharged particles are no longer repelled by the reverse osmosis membrane and can pass through it.
But not all uncharged particles end up in pure water. The reverse osmosis membrane is designed in such a way that the size of its pores is as close as possible to the size of the smallest water molecules in nature, therefore only the smallest uncharged molecules of mineral substances can pass through the reverse osmosis membrane, and the most dangerous large molecules, for example, salts of heavy metals, will not be able to penetrate through her.
In practice, the membrane does not completely retain dissolved substances in water. They penetrate the membrane, but in negligible amounts. Therefore, purified water still contains a small amount of dissolved substances. It is important that an increase in inlet pressure does not lead to an increase in the salt content in the water after the membrane. On the contrary, more water pressure not only increases the performance of the membrane, but also improves the quality of cleaning when using the reverse osmosis method. In other words, the higher the water pressure on the membrane, the more pure water best quality you can get it.
In the process of purifying water according to the principle of reverse osmosis, the concentration of salts on the inlet side increases, due to which the membrane may become clogged and stop working. To prevent this, a forced flow of water is created along the membrane, flushing the brine into the drain.
The effectiveness of the reverse osmosis process with respect to various impurities and solutes depends on a number of factors: pressure, temperature, pH level, the material from which the membrane is made, and chemical composition input water, affect the efficiency of the reverse osmosis system. The degree of water purification in such filters is 85% -98% for most inorganic elements. Organic substances with a molecular weight of more than 100-200 are completely removed; and with less, they can penetrate the membrane in small quantities.
Inorganic substances are very well separated by a reverse osmosis membrane. Depending on the type of membrane used (cellulose acetate or thin-film composite), the degree of purification for most inorganic elements is 85%-98%.
The reverse osmosis membrane also removes organic matter from the water. In this case, organic substances with a molecular weight of more than 100-200 are completely removed; and with less, they can penetrate the membrane in small quantities. The large size of viruses and bacteria virtually eliminates the possibility of their penetration through the reverse osmosis membrane. However, manufacturers claim that the large size of viruses and bacteria virtually eliminates the possibility of their penetration through the membrane.
At the same time, the membrane allows oxygen and other gases dissolved in water to pass through, which determine its taste. As a result, the output of the reverse osmosis system is fresh, tasty, so pure water that, strictly speaking, it does not even require boiling.
In industry, such membranes are made from polymeric and ceramic materials. Depending on the size of the pores, they are used to:
reverse osmosis;
microfiltration
ultrafiltration;
nanofiltration (nanometer - one billionth of a meter, or one thousandth of a micron, that is, 1 nm = 10 angstroms = 0.001 microns.);
Reverse osmosis membranes contain the narrowest pores and are therefore the most selective. They trap all bacteria and viruses, most of the dissolved salts and organic substances (including iron and humic compounds that give color to the water and pathogenic substances), passing only water molecules of small organic compounds and light mineral salts. On average, RO membranes retain 97-99% of all dissolved substances, passing only water molecules, dissolved gases and light mineral salts.
Membrane filter material is cellulose nitrate. As long-term practice has shown, this material provides optimal conditions the growth of retained microorganisms, excluding a false negative result.
The membrane filter consists of several layers that are connected together and wrapped around a plastic tube. The membrane material is semi-permeable. Water is forced through a semipermeable membrane that rejects even low molecular weight compounds. A schematic representation of the membrane is shown below.
Reverse osmosis membranes are used in many industries where there is a need to obtain high quality water (water bottling, production of alcoholic and non-alcoholic beverages, food industry, pharmaceuticals, electronics industry, etc.).
The use of a two-stage reverse osmosis (water is passed through reverse osmosis membranes twice) makes it possible to obtain distilled and demineralized water. Such systems are a cost-effective alternative to evaporator distillers and are used in many industries (electroplating, electronics, etc.). AT last years a new boom in membrane technology began.
Membrane filters have become more and more used in everyday life. This became possible thanks to scientific and technological achievements: membrane devices became cheaper, specific productivity increased and operating pressure decreased. Reverse osmosis systems allow you to get the purest water that meets SanPiN "Drinking Water" and European quality standards for drinking water use, as well as all requirements for use in household appliances, heating systems and plumbing.
Membrane filtration is indispensable for ridding water of microbes, since the pore size of the membranes is much smaller than the size of the viruses and bacteria themselves.
Microfiltration membranes with a pore size of 0.1-1.0 microns retain fine suspensions and colloidal particles, defined as turbidity. As a rule, they are used when there is a need for coarse water purification or for preliminary water treatment before deeper purification.
When switching from microfiltration to reverse osmosis, the pore size of the membrane decreases and, consequently, the minimum size of retained particles decreases. At the same time, the smaller the pore size of the membrane, the greater the resistance it provides to the flow and the greater the pressure required for the filtration process.
Ultrafiltration (UV) UV membrane retains suspended solids, microorganisms, algae, bacteria and viruses, significantly reduces water turbidity. In some cases, UV membranes effectively reduce the oxidizability and color of water. Ultrafiltration replaces settling, settling, microfiltration.
Ultrafiltration membranes with a pore size of 0.01 to 0.1 µm remove large organic molecules (molecular weight over 10,000), colloidal particles, bacteria and viruses without retaining dissolved salts. Such membranes are used in industry and in everyday life and provide a consistently high quality of purification from the above impurities without changing the mineral composition of water.
In industrial water treatment, hollow fiber membranes are most widely used, the main element of which is a hollow fiber with a diameter of 0.5-1.5 mm with an ultra-filtration membrane applied to the inner surface. To obtain a large filtering surface, groups of hollow fibers are grouped into modules providing 47-50 m2.
Ultrafiltration allows you to save the salt composition of water and carry out its clarification and disinfection with virtually no use of chemicals.
Typically, the UV unit operates in dead-end filtration mode without discharging the concentrate. The filtration process alternates with backwashing of membranes from accumulated contaminants. To do this, part of the purified water is supplied in the opposite direction. Periodically, a solution of detergents is dosed into the wash water. Rinsing water, which is a concentrate, does not exceed 10–20% of the initial water flow. Once or twice a year, the membranes are intensively circulated with special cleaning solutions.
Ultrafiltration can be used to obtain drinking water directly from a surface source. Since the UV membrane is a barrier to bacteria and viruses, no primary chlorination of the water is required. Disinfection is carried out immediately before the water is supplied to the consumer.
Since the ultrafiltrate is completely free from suspended and colloidal substances, it is possible to use this technology as a pretreatment of water before reverse osmosis.
Nanofiltration (NF) occupies an intermediate position between reverse osmosis and ultrafiltration. Nanofiltration membranes are characterized by a pore size of 0.001 to 0.01 µm. They retain organic compounds with a molecular weight above 300 and pass 15-90% of salts, depending on the structure of the membrane.
Reverse osmosis and nanofiltration are very similar in terms of media separation mechanism, process organization scheme, operating pressure, membranes and equipment. The nanofiltration membrane partially retains organic molecules, dissolved salts, all microorganisms, bacteria and viruses. At the same time, the degree of desalination is lower than with reverse osmosis. The nanofiltrate contains almost no hardness salts (10-15 times decrease), i.e. he is softened. Happens also effective reduction color and oxidizability of water. As a result, the source water is softened, disinfected and partially desalinated.
Modern nanofiltration filters are an alternative to ion-exchange water softeners.
The latest generation of water filters are nano-carbon based filters. They are not yet widespread on the world market, but, despite this, they cost relatively little money. Their advantage over other filters is in the special subtlety of cleaning and the delicacy of cleaning - they do not remove everything from the water, i.e. leave salts and trace elements in the water. At the same time, they purify water at the nanolevel, i.e. work tens and hundreds of times better than analogues - filters based on carbon sorbent.
But the most recognized reverse osmosis membrane filters for water purification due to the unique quality of water achieved after filtration. Such filters effectively cope with low molecular weight humic compounds, which give the water a yellowish tint and impair its taste properties, and which are very difficult to remove by other methods. With the use of membrane reverse osmosis filters, you can get the purest water. Such water is not only safe for health, but also preserves the snow-whiteness of expensive plumbing, does not disable household appliances and the heating system, and just pleases the eye.
Reverse osmosis filters have a number of other advantages. Firstly, contaminants do not accumulate inside the membrane, but are constantly drained into the drain, which eliminates the possibility of their getting into the treated water. Thanks to this technology, even with a significant deterioration in the parameters of the source water, the quality of treated water remains consistently high. The performance can only decrease, which the consumer learns about from the counters built into the system. In this case, the membrane must be washed with special reagents. Such washings are carried out regularly (about 4 times a year) by service specialists. At the same time, the operation of the installation is monitored. Another advantage is the absence of chemical discharges and reagents, which ensures environmental safety. Membrane systems are compact and fit perfectly into the interior. They are easy to operate and do not need attention from the user.
Membrane water treatment systems are quite expensive. But, given the fact that when using "accumulative" systems, you will most likely need several installations of various actions, their total cost will also be expensive. And if we talk about operating costs, then for membrane systems they are much less.
Now reverse osmosis technology is actively developing. Installations are constantly being improved. Modern systems are complete units with water pre-treatment, installed under the sink or on the water supply line.
Osmotic filters are becoming increasingly popular in domestic use thanks to reliability, compactness, ease of use and, of course, the consistently high quality of the resulting water. Many consumers claim that only thanks to reverse osmosis did they recognize the true color of pure water.
Most residential reverse osmosis filters are equipped with composite thin film membranes capable of retaining 95 to 99% of all dissolved substances. These membranes can operate over a wide range of pH and temperature, as well as at high concentrations of impurities dissolved in water.
The most progressive systems for the preparation of drinking water at present are reverse osmosis systems, which provide water at the outlet in terms of purification degree close to distilled. However, unlike distilled, it has excellent palatability because it contains dissolved gases.
The key component of such a system is a semi-permeable membrane, which provides a degree of water purification of up to 98-99% in relation to almost any pollutants. The membrane allows only water molecules to pass through, filtering out everything else. The characteristic pore size of the membrane is 1 Angstrom (10-10 m). Thanks to this purification, dissolved inorganic and organic compounds, as well as heavy metals, bacteria and viruses, are removed from the water.
In some cases, the use of reverse osmosis is necessary. For example, for water softening. Usually, ion exchange resins are used for this, which replace the calcium and magnesium ions responsible for hardness in water with sodium ions. Sodium salts do not form scale and the allowable concentrations of sodium in water are much higher than those of calcium and magnesium. So it's usually okay. But if the hardness is very high, more than 30 mg / eq / l, then in this process there is an excess of sodium. There will be no scale, but you can’t drink such water. This is where reverse osmosis is needed to remove excess sodium - to soften the water.
Today, other types of filters of the membrane-sorption class are also presented on the Russian market. They consist of a membrane block and one or two blocks (depending on performance and resource) for additional purification. In addition, drinking water already purified and stabilized in terms of salt composition undergoes a final 6-12-fold clarification on special fibers and sorbents. Such a combination of numerous methods of purification and clarification of the liquid medium, known among specialists as "water grinding", made it possible to bring the resource of these water purifiers to 50,000-75,000 liters.
The domestic industry also produces compact reverse osmosis filters designed for water purification in field or extreme conditions. Their main advantage is versatility and compactness, you can always take them with you and be able to use the filter at any time. These are telescopic tubes in shape and size with an ordinary fountain pen. Despite their small size, such devices are able to reliably purify 10 liters of water from bacteria, viruses, chlorine, phenol and toxic metals.
But, despite their advantages, not everyone likes osmotic filters. Main argument: What good is it when the water is perfectly clean? After all, it does not contain trace elements. Answering this question, some manufacturers say that a person receives the necessary trace elements not from water, but together with food, because in order to satisfy the daily need, for example, for potassium, you need to drink 150 liters of water, and 1000 liters of phosphorus. l; others are developing special mineralizers so that the water after cleaning with a filter becomes not only clean, but also “alive”, that is, full-fledged for consumption. Such installations have a long resource (4000 - 15000 l) and a high filtration rate (1.5-3 l/min). These filters are expensive - from 150 to 900$, and also require a lot of space for installation.

Then you've come to the right place! Our Customer Service will help you solve any issues of your water filter in Rostov-on-Don and Krasnodar.

FiltroMir provides services for the population and organizations.

To order the service you need, just call the numbers indicated on the site and agree with the manager at a TIME CONVENIENT FOR YOU!

Standard installation of a reverse osmosis filter - now free of charge! (for models more expensive than 8500 rub., for osmosis models up to 8500 rub. installation = 500 rub.)

On the one hand, it is not difficult to install a reverse osmosis filter on your own, but in fact this is not entirely true, this requires certain skills, knowledge and tools.

Installing a reverse osmosis filter often takes place in several stages:

1. The master inspects the installation site of the filter and the faucet for clean water.
2. Next, you need to check the water pressure in the water supply. for correct operation osmosis without a pump requires a pressure of at least 2.7 atmospheres. If the pressure in the water supply is less than this indicator, you must either upgrade your osmosis by installing a more efficient membrane or a pump to increase pressure.
3. Next comes the preparatory assembly of the filter and checking the tightness of all connections.
4. After the osmosis is assembled, the master mounts a faucet for clean water at your sink (in a place agreed with you, taking into account the recommendation of the master).
5. Next, a tie-in to the water supply is mounted (a tee with a faucet that cuts off the water supply to the filter).
6. After having passed preparatory work the master connects all filter nodes to each other.
7. Next, the master proceeds to start the filter and flush the pre-treatment water cartridges.
8. After the filter is started, the master again checks the tightness of all nodes and, using a TDS meter, checks the correct operation of the filter.
9. After the osmosis is installed and the master is 100% sure that it is working correctly. The master teaches you how to properly operate your filter, fills out a warranty card.
10. When all the work is completed, the master fills out the warranty card and you pay for his services.

You can order a standard osmosis installation by calling the phone or by pressing the button to call the wizard and fill out the form.

Under not standard installation means: non-standard filter arrangement (+300 rub.), drank wooden passages (+400 rub.), use of an additional fitting not included in the delivery set, filter selection (+200 rub.), re-analysis of the drainage line (+200 rub.)

Replacing filters in reverse osmosis.

Timely replacement of filters in reverse osmosis is very important. this affects the quality of the water you drink and the longevity of the osmosis.

You can replace the cartridges on your reverse osmosis filter on your own, but it is better to use the services of professionals in this matter. this process is not as simple as it seems at first.

Replacing cartridges in reverse osmosis occurs in several stages:

1. First of all, the master checks the correct operation of the reverse osmosis membrane with a TDSmeter (a device that is designed to test water quality) and if the TDS meter readings are high, then it is necessary to replace the reverse osmosis membrane.
2. Next, there is a replacement of 3 cartridges for pre-treatment of water, a post-filter (aka post-carbon) and a mineralizer, if the time for replacing these modules has come.
3. After the new cartridges are installed, the master flushes these cartridges, eliminating the clogging of the membrane with coal dust.
4. Next, the filter is launched into working condition.
5. After the filter is started and the master is sure that your filter is working correctly, he makes notes in the passport of your osmosis and you pay with it.

Tank flushing, for clean water, in a reverse osmosis system.

Rinsing and disinfection of the clean water tank and filter housings should be done at least once every 3 years or if foreign tastes and odors begin to appear in the purified water. Here detailed instructions if you decideDo your own tank rinsing with osmosis.

Reverse osmosis system repair.

Is your filter leaking water? Is the water constantly running down the drain? Foreign odors in filtered water? Is your reverse osmosis filter leaking?

No matter what happened to your reverse osmosis filter, our experts will always help!

Installation of a flow filter for drinking water.

Installing a flow filter is not a particularly complicated process and if you have a certainWith your skills and tools, you can install your flow filter, and on your own. But if you want to be sure that the flow filter is installed correctly and the water is filtered as expected, then it is better to use the services of professionals in the installation and maintenance of filters.

Replacement of cartridges in the flow filter.

Timely replacement of cartridges (filters) in flow filter it is very important. After all, cartridges that have exhausted their resource can throw out the dirt that they have accumulated in themselves into drinking water, and in addition, after only 6-12 months, a colony of bacteria begins to emerge in the filter cartridge. By contacting our specialists, you will find out which cartridges, when you need to change them, and which cartridges are suitable for water purification in your region, and our specialists will install the cartridges in a high-quality manner and in the right sequence.

Regeneration of cartridges.

Regeneration of cartridges is the restoration of the filtering properties of cartridges (only those filter elements, the regeneration of which is provided by the manufacturer). Our specialists will gladly regenerate your cartridge and it will work like new again.

Diagnostics (filter failure detection).

If your water filter has become unstable, i.e. does not fill the tank, slowly filters, leaks, etc. In most cases, it is possible to diagnose a malfunction over the phone, but sometimes this can only be done after the wizard visits your home.

Installation of the main filter.

Installing the main filter is a rather laborious process that requires certain knowledge and skills, as well as the availability of a tool. Before installing the main filter, it is necessary to inspect the installation site to understand the dimensions required for installation. Next, you need to choose a place where it will be convenient to service the main filter in the future. Only after that the master proceeds with the installation of the filter with high quality and with a guarantee.

Replacement of cartridges in the main filter.

Replacing the cartridges in the main filter is not difficult. But you need to be able to replace the cartridge correctly, because often the main filters are in a hard-to-reach place and only a qualified specialist can minimize the amount of spilled water and the likelihood of the flask leaking after replacing the cartridges.

Installation of a filter for the whole house.

Installing filters for the whole house (softener filter, column type filter, cabinet type filter, high-performance reverse osmosis systems, etc.) requires a huge amount of knowledge and tools, not so much installation as setting up and running the filter. But our experts will help you in this matter.

Replacement of the filter loading.

This service refers to the replacement of the filter load in the filter for the whole house (column or cabinet type). The frequency of replacement is from 12 to 60 months.

Delivery of salt for filter regeneration.

We deliver salt for the regeneration of reagent filters (softeners and filters of complex cleaning). The shipping cost is indicated for a quantity of up to 9 bags, in cases where a larger quantity is needed, please coordinate the delivery cost with our operators.

Installation of a boost pump for osmosis

The master will install a pressure boosting kit for the correct operation of reverse osmosis. Start up and check the correct operation of the system with a booster pump. This service also includes the replacement of the current reverse osmosis pump. This work provides a domestic system.

Dismantling the inlet assembly (inlet tee)

In cases where the transfer of the system is required, or your water filter is being replaced, or you need to replace the tee connecting your filter to the water supply, then this service is suitable.

Replacing the osmosis storage tank, diagnostics, pumping

When it is required to set the required pressure in storage capacity your household reverse osmosis filter, or you just need to replace it - turn off the old one, drain the water, connect a new one, check the operation (the old container is not disposed of and is not taken out by our company). This service is also suitable for installing an additional tank for osmosis. There is no need to pump up a new container!

Moving a filter to another address

Rental apartment? Bought a new one? Are you moving? Our company is pleased to offer the service of transferring the filter to a new address. This service includes: departure of the master to the 1st address and dismantling of the old system, transportation of the filter to a new address, installation of the filter at the 2nd address. In this case, you may need to replace the cartridges with new ones, you may need some inexpensive fittings to connect. By reducing the filtration rate industrial plant, or with an increase in pressure on the membrane blocks, it is recommended to carry out a chemical cleaning of the membrane elements. Our company uses only high-quality chemistry proven by experience. The quality of chemical flushing depends very much on the degree of contamination of the membrane elements, so we recommend that you do not run chemical flush intervals in time. Depending on the contaminants, we use five-stage washing or six-stage washing, the time required for washing takes one working day. This service is available at our office.