Flushing of engineering systems

Rusty, dirty pipes can not only cause thermal and hydraulic modes, but also a source of contamination of drinking water. Internal fouling of pipes helps to reduce the “live” (flow) cross-section and can lead to complete blockage and cessation of water flow to water collection points. Flushing the water supply system is an event that will prevent these problems and significantly increase the service life of the entire system. If you ignore preventive maintenance, this will ultimately lead to the need to replace pipes, which in some cases is accompanied by dismantling the structure and its subsequent restoration.

Sure signs that the water supply and sewerage system of a private home are clogged are the appearance unpleasant odor. About the blockage water pipes indicates the appearance of rust flakes, a metallic taste, and a change in the color of the water. If flushing a hot water system using metal pipes, was not carried out in a timely manner, this will not only lead to a decrease in their bandwidth, but will also negatively affect the circulation of the resource. The result will be an increase in energy consumption to provide optimal temperature, as well as increased consumption.

Flushing water supply pipes - main types

The most common cause of fouling of the inner surface of pipes is corrosion processes, as well as contamination caused by unfiltered water. Flushing the water supply system can be of the following types:

• hydrodynamic. It consists of removing scale and blockages from pipes by cleaning the system using thin jets of water, which are supplied under high pressure through special nozzles. This type of cleaning allows you to achieve high results at relatively low costs. Hydrodynamic flushing of the system will cost half as much as replacing water supply pipes. Thanks to the operation of hydrodynamic cleaning devices, magnesium, sodium, calcium salts, fats, rust, and scale are completely removed from pipes.

instructions - Hydrodynamic pipe flushing

• hydrochemical flushing is one of the most common non-separable washing methods water supply and heating systems, which allows you to transform deposits and scale into a dissolved state and wash them out of the system. Chemical washing The water supply system uses products that are approved for use by sanitary and epidemiological supervision. This guarantees their complete safety in relation to pipelines and water heating equipment. Such reagents only act on scale and rust. To flush the heating system, alkaline and acidic solutions reagents. For example, composite inorganic and organic acids(compositions based on caustic soda, phosphoric acid, solutions with various additives, etc.). The exact composition of this or that cleaning product is kept secret by manufacturers.

Chemical flushing of the water supply system is a reliable and economical method that allows you to clean the system of dirt and scale. With its help, a positive result is quickly achieved. In one cycle you can wash not only DHW system(hot water supply), but cold water supply, sewerage, heating system, clean heating equipment (DHW boilers and boilers).

• Pneumohydropulse flushing of water supply pipes. This cleaning method allows you to flush the system through multiple pulses, which are transmitted using a special apparatus. Under the influence of a kinetic pulse wave, cavitation bubbles are created in the liquid filling the pipes, which are highly intense during the period of rarefaction. Receipt bubbles moving with the flow of water towards the area high blood pressure, as well as during the compression period, burst, creating a shock wave. Under its action, deposits come off the walls of the pipes and are carried away by the subsequent wave.

The hot water supply and heating system is much easier to flush than others. This is due to the design of the circuit, which is closed or closed. Therefore, all types of washing are easy and painless here. It is better to flush the sewer system chemically, since it is considered free-flowing, and, therefore, the presence high pressure may damage pipelines and their connections. The cold water supply system can be flushed with any of the options listed. But at the same time, it is necessary to completely cut off the network from external influence (source, equipment or central highway). It is also recommended to leave one of the water points open so that all plaque and rust can easily come out of the pipelines.

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Nothing affects the quality of water transported through pipelines more than the condition of the pipes themselves. Dirty and rusty water supply pipes are a nationwide problem. Replacement steel pipes for pipes made of alternative materials it helps only partly. But not only dirty pipes can be a source of contamination of tap water. Owners of private houses, cottages, as well as boarding houses, holiday homes, shopping and office centers, etc., who receive water from their own wells, very often complain about the water from their taps, although its quality immediately after the filters is confirmed by additional tests.

The reasons for this unpleasant phenomenon are quite varied, but most often it is:

• small water intake (stagnation of water in the pipes), or too much intake, when water treatment equipment cannot cope with filtration and insufficiently purified water enters the taps,
• proliferation of sulfate-reducing bacteria that produce hydrogen sulfide,
• contamination of the hot water boiler with deposits washed away during circulation from the internal surfaces of the pipeline and heated towel rails, decomposition of the magnesium anode. Deposits accumulate on the bottom and walls of the boiler, which quickly leads to intensive proliferation of thermotolerant bacteria, and, as a result, an intense smell of hydrogen sulfide,
• if water treatment equipment is installed on a pipeline system that includes a hot water boiler, which has already been operated (even for a short time) with untreated water.

Dirty, rusty pipes, heat exchangers and boilers clogged with scale are not only a source of water pollution, but also a cause of disruption of hydraulic and thermal conditions, since internal fouling of pipes and heat exchange surfaces leads to a decrease in the flow area up to its complete blockage and the cessation of water supply to water collection points or heat analysis. In the latter case, there is only one way out - replacing pipes or heat exchangers, which often involves partial destruction and subsequent restoration building structures and large financial costs.

Deposits in pipes and heat exchangers resulting from calcium and magnesium salts contained in water, iron oxide deposits, and bacterial growth are the most common problems encountered in everyday life and in industry. Scale creates high thermal resistance heat flow, which leads to a decrease in coolant temperature and a decrease in the thermal conductivity of the heating system, a decrease DHW temperature. This means that the heat transfer and throughput of the pipes decreases. The temperature both in rooms and in hot water supply pipes drops, and to increase it, it is necessary to increase fuel consumption in boiler plants, and in private homes, gas consumption for heating water increases.

The method allows you to effectively remove various contaminants of internal surfaces and restore the throughput of pipelines and heat transfer without compromising the integrity of the pipeline system and water heating equipment hydrochemical washing using special means.

Washing of heat and water heating equipment and pipelines for drinking and household purposes is carried out only with reagents approved for specific use, certified by the SanEpidnadzor of the Russian Federation, which are absolutely safe for the integrity of the equipment (gaskets, taps, etc.), do not affect the material of the pipelines (steel, galvanized, metal-plastic , plastic), because Only deposits inside the pipes are washed away.

The undoubted advantages of the hydrochemical washing method include the speed with which a positive result is obtained with minimal inconvenience for owners of private houses and cottages, because In one cycle, hot and cold water supply circuits and water heating equipment (boilers and DHW boilers) are flushed.

Work on flushing pipelines and water heating equipment is carried out without draining the system (which is especially important for heating), and regardless of the time of year.

IT IS IMPORTANT TO KNOW:

Heating systems in which any antifreeze is poured as a coolant - when replacing antifreeze with water, the heating system and boiler must be flushed using special products.

If you do not do a proper flushing, you may encounter a phenomenon such as “noise” in the boiler and heating system; it is the antifreeze residues that foam and cause these phenomena. In some cases, an emergency shutdown of the boiler occurs (usually at the most “inopportune moment”).

To reduce the effects of oxygen corrosion and hardness salt deposits on heat transfer surfaces in the heating system, we recommend using corrosion and hardness salt deposit inhibitors.

Using softened water as a coolant does not eliminate the problem of oxygen corrosion, therefore, in such heating systems it is also necessary to add corrosion inhibitors as a preventive measure for corrosion. The amount of inhibitor depends on the volume of the system, but on average 5% is enough for the entire volume of the system; about 1-2% of the product is added once a year (this depends on the volume of replenishment of the heating system during the year).

Hot systems and cold water supply Signs of water pollution: Unpleasant smell Color change Scale Causes of pollution: Insufficient or missing water treatment Salt deposits in pipelines calcium, magnesium, iron Bacterial growth inside pipelines Pipeline corrosion

Heating system Signs of decreased effectiveness work heating system: Decrease temperature heating devices Increased energy costs Causes: Deposits inside pipes and heating equipment

Corrosion inhibitor brand SP-V

Important! Before installing or immediately after installing new water treatment equipment, it is recommended to flush the DHW, hot water and boiler pipeline systems to prevent the appearance of unpleasant odors in the water

To solve the problems that users of water heating equipment encounter during its operation, we offer:

1. Water analysis (including on-site rapid analysis)
2. Comprehensive inspection of hot and cold water supply systems,
heating and existing water treatment system
3. Selection of necessary reagents for flushing (depending on the nature of deposits and pipe material)
4. Flushing the system, with a guarantee effective removal sediments
5. Development of recommendations for increasing the efficiency of water treatment
6. Subscriber service (constant monitoring of systems status
and timely resolution of problems).
7. Protection of pipelines and water heating equipment of the drinking water supply system from corrosion and scale with the drug "Sequest".
8. Protection of pipelines and water heating equipment of heating, cooling and air conditioning systems from corrosion and scale with the preparation "SPV".
9. Disinfection of pipelines with the drug "Dezavid".
10. Consultations on the selection of equipment and reagents for water treatment.

Chemical (hydrochemical) cleaning of hydraulic system pipelines for various purposes

The main cause of malfunctions in hydraulic systems are various mechanical impurities in the oil (and other working fluids), which damage the spools (jamming or gradual abrasion of the working surfaces). Therefore, during the operation of a hydraulic system, oil cleanliness is the main condition for uninterrupted operation. Although the process of operating a hydraulic system involves periodic shutdowns and openings, their number depends on the cleanliness of the pipes at the commissioning stage.

A still existing and fairly common method of cleaning the internal surfaces of pipes is the so-called “pickling” of pipes in an acid bath.

However, this method of cleaning pipes does not provide a 100% guarantee of the cleanliness of internal surfaces after installation of the system, because During the installation process, inevitable contamination occurs with both mechanical impurities and secondary corrosion (especially for ferrous steels).

The cleanliness of the pipes will be much more effective if pre-start cleaning of an already installed system is carried out, highlighting closed circuits to create circulation of the cleaning agent.

Chemical (hydrochemical) cleaning of hydraulic systems using the circulation method along dedicated circuits allows:

• remove corrosive and mechanical deposits;
• degrease the internal surfaces of the pipes;
• remove the oxygen corrosion inhibitor layer (if necessary);
• carry out passivation of the internal surfaces of pipes.

Duration of hydrochemical cleaning work, selection and procedure for using reagents, quantity Supplies, labor intensity depends on the degree of corrosion damage to the pipes, the total volume of the hydraulic system, the number and configuration of circulation circuits.

A group of companies hosts a website hydrochemical cleaning various industrial equipment and pipelines for various purposes:

• heat power equipment (storage boilers, heat exchangers, hot water boilers);
• hydraulic systems for various purposes;
• technological equipment(cooling circuits of injection molding machines, blow molding machines, etc.)

Consultations on the selection of equipment and reagents for water treatment.

The condition of the pipes themselves has a great influence on the quality of drinking water. Moreover, not in the best way. Rusty and contaminated water pipes of water supply systems can easily be called our national problem. Flushing systems can be a good thing. prophylactic against the appearance of pollution, since replacing metal pipes with plastic ones cannot fundamentally improve the situation, and not everyone can afford to replace pipes in their home.

At the same time, the reason for the formation of pollution lies not only in pipelines. People living in private country houses and cottages, large shopping and office centers and other establishments that use their own sources (artesian wells) for water intake also quite often complain about insufficient water quality, although, as the results of the analyzes show, all its parameters are within acceptable limits.

It is possible to effectively deal with contamination of the water supply system, as well as almost completely restore its throughput without compromising its integrity or subjecting it to complete or partial disassembly, through hydrodynamic or hydrochemical flushing using special chemical reagents.

The undoubted advantages of hydraulic methods of water supply systems include the speed with which a positive result is achieved, a minimum of inconvenience for residents and consumers, since in just one cycle it is possible to perform high-quality flushing of not only hot and cold water supply systems, but also heating equipment. Moreover, all flushing actions can be performed at any time of the year and without draining the system, which is especially important for heating.

It should be understood that flushing water supply systems drinking purposes should be carried out only with those chemical reagents that are approved for use by sanitary and epidemiological supervision authorities Russian Federation to ensure their absolute safety. In addition, you need to take into account the fact that chemical reagents can also have a negative effect on equipment - taps, gaskets, mixers, etc. This means that the solution must be prepared by specialists who know its concentration.

Recently, during the construction of new residential buildings, as well as during major reconstruction old ones, the water supply system is installed from plastic pipes— their internal surface is smoother than that of metal ones, so various deposits practically do not form on it, negatively affecting the quality of the incoming water. However, they also require periodic washing to keep them in good condition. Well, if metal pipes are still installed in the water supply system, then flushing should be performed more often, at least once a year (depending on the condition of the water). Regular cleaning will get rid of problems such as the appearance of deposits and fouling of pipes, which will extend the life of the system and significantly improve the organoleptic parameters of water.

As already mentioned, there are several methods of flushing, and which one to use depends on each specific case, in particular, on the condition of the pipelines and the indicators of the source water. Its quality can be determined in the laboratory, but as for the condition of the water supply system, a specialist can give an opinion after examining it. He will also choose the best method for washing.

The most common and “painless” method of flushing is hydropneumatic. It consists of supplying water under high pressure together with compressed air into the system. The flow of water destroys the deposits and they are washed into the sewer. You can also use the hydromechanical method, during which a special cleaning device made from soft material, for example, foam rubber.

Flushing water supply systems chemically is carried out using reagents from which the washing solution is prepared. But this should be done by specialists.

Disinfection of water supply pipelines is required when commissioning areas after installation, or after repair and restoration work. A prerequisite for disinfection can also be data from laboratory analysis of water samples taken from the system. The quality of water must meet the requirements of sanitary and hygienic norms and current standards.

Before disinfection measures Water supply pipelines should be flushed from corrosion products and deposits formed during operation, or introduced as a result of construction and installation work. To flush hot and cold water supply systems, the Engineering Service Group of Companies uses specially designed installations. The technology, as well as the equipment used, are protected by the Russian Federation Patent. The products used to flush water mains are environmentally friendly. This fact is confirmed by a certificate from the Ministry of Health of the Russian Federation and a sanitary-epidemiological conclusion. After cleaning and flushing, the water supply pipelines are checked for leaks by carrying out hydraulic tests. If violations are identified, malfunctions must be corrected.

Disinfection procedure.

Depending on the characteristics inherent in a particular object, the following is individually selected:

• disinfectant;
• optimal concentration of the product;
• the required amount of disinfectant is determined depending on the total volume of the system (pipeline);
• duration of disinfection;
• solution temperature;
• location of connection to the system;

Initially, the area where the work is being carried out is disconnected from common system. A solution supply unit is connected to the object through a hydrant, pipe, or a pre-prepared connection. Prepared in the installation container disinfectant solution with the calculated concentration, after which it is served in portions pumping equipment installation until the system is completely filled. Available on site shut-off valves closed and opened to carry out its disinfection. Due to the pressure created in the system by pumping equipment, full contact with the surface is ensured, the solution enters the pores, filling the roughness of pipelines and fittings. Modern disinfectants used by our organization during work are environmentally friendly and biodegradable; used solutions can be disposed of in sewer networks. After removing the spent solution, the system is thoroughly rinsed with clean drinking water.

Our company carries out work on disinfection of water supply systems for cold drinking and hot water, as well as drinking water containers, using modern equipment and highly effective products.

Rusty, dirty pipes can not only cause disruption of thermal and hydraulic conditions, but also a source of contamination of drinking water. Internal fouling of pipes helps to reduce the “live” (flow) cross-section and can lead to complete blockage and cessation of water flow to water collection points. Flushing the water supply system is an event that will prevent these problems and significantly increase the service life of the entire system. If you ignore preventive maintenance, this will ultimately lead to the need to replace pipes, which in some cases is accompanied by dismantling the structure and its subsequent restoration.

A sure sign that the water supply and sewer system of a private home are clogged is the appearance of an unpleasant odor. Clogging of water pipes is indicated by the appearance of rust flakes, a metallic taste, and a change in the color of the water. If flushing of a hot water supply system using metal pipes was not carried out in a timely manner, this will not only lead to a decrease in their throughput, but will also negatively affect the circulation of the resource. The result will be increased energy consumption to ensure optimal temperature, as well as increased consumption.

Flushing water supply pipes - main types

The most common cause of fouling of the inner surface of pipes is corrosion processes, as well as contamination caused by unfiltered water. Flushing the water supply system can be of the following types:

• hydrodynamic. It consists of removing scale and blockages from pipes by cleaning the system using thin jets of water, which are supplied under high pressure through special nozzles. This type of cleaning allows you to achieve high results at relatively low costs. Hydrodynamic flushing of the system will cost half as much as replacing water supply pipes. Thanks to the operation of hydrodynamic cleaning devices, magnesium, sodium, calcium salts, fats, rust, and scale are completely removed from pipes.

Video instruction - Hydrodynamic pipe flushing

• hydrochemical flushing is one of the most common non-separable washing methods water supply and heating systems, which allows you to transform deposits and scale into a dissolved state and wash them out of the system. Chemical flushing of the water supply system uses products that are approved for use by sanitary and epidemiological supervision. This guarantees their complete safety in relation to pipelines and water heating equipment. Such reagents only act on scale and rust. Alkaline and acidic solutions of reagents are used to flush the heating system. For example, composite inorganic and organic acids (compositions based on caustic soda, orthophosphoric acid, solutions with various additives, etc.). The exact composition of this or that cleaning product is kept secret by manufacturers.

Chemical flushing of the water supply system is a reliable and economical method that allows you to clean the system of dirt and scale. With its help, a positive result is quickly achieved. In one cycle, you can rinse not only the hot water supply system, but also the cold water supply, sewerage system, heating system, and clean heating equipment (DHW boilers and boilers).

• Pneumohydropulse flushing water supply pipes. This cleaning method allows you to flush the system through multiple pulses, which are transmitted using a special apparatus. Under the influence of a kinetic pulse wave, cavitation bubbles are created in the liquid filling the pipes, which are highly intense during the period of rarefaction. Receipt bubbles, moving with the flow of water towards the area of ​​​​high pressure, as well as during the compression period, burst, creating a shock wave. Under its action, deposits come off the walls of the pipes and are carried away by the subsequent wave.

The hot water supply and heating system is much easier to flush than others. This is due to the design of the circuit, which is closed or closed. Therefore, all types of washing are easy and painless here. It is better to flush the sewerage system chemically, since it is considered non-pressure, and, therefore, the presence of high pressure can damage the pipelines and their connections. The cold water supply system can be flushed with any of the options listed. But at the same time, it is necessary to completely cut off the network from external influence (source, equipment or central highway). It is also recommended to leave one of the water points open so that all plaque and rust can easily come out of the pipelines.