Installing a septic tank in winter: step-by-step instructions and analysis of possible errors. Frozen septic tank: what to do and how to avoid it What to do so that the septic tank does not freeze

Properly equipped sewer pipes should not freeze, as the constant movement of drains provides the pipeline with the necessary heat. But with the frequent combination of several adverse factors, a situation may arise when the septic tank is frozen. And from knowing what to do to unfreeze the pipe in the house or at the exit from it, the efficiency of the measures and the restoration of the normal operation of the system will depend.

The formation of ice plugs in the pipeline is an unpleasant thing already because it is impossible to use water. But most cases of sewer freezing can be avoided if you control the installation of the system and use the design correctly. So, the reasons that cause the septic tank to freeze:

Small pipe slope or the use of a pipeline of a smaller diameter than it should be. Errors lead to stagnation of flows and water freezes in certain areas.
Disturbed drainage. The small area of the filtration fields, the low depth of the laying of pipes lead to overflow, which means that the newly arriving flows will be delayed in the pipeline. You will have to pump out the water from the septic tank and repeat the procedure before the onset of heat in order to re-equip the filtration fields.
Blockage formation also leads to trouble and you have to rack your brains on exactly where to unfreeze the pipe.
Leaks. A dripping faucet, leaking water in the drain tank - all these factors lead to a constant low flow of water into the pipeline. And even an insignificant amount of liquid in winter will freeze layer by layer, creating an ice plug.

Important! It is believed that in winter, in especially severe frosts, you can let water in a thin stream to prevent the septic tank from freezing. In fact, this cannot be done. This will not save you from freezing, since the pipeline freezes from the walls, but it can cause the formation of an ice plug.

Pipe defrosting

Having determined the cause of the freezing of the septic tank, it is necessary to eliminate the accident. Of course, for starters, it’s better to estimate the size of the “disaster” (the place where the plug formed and its size), and then think about how to warm up the sewer.

Spilling the system with water

This is the easiest and most affordable option to defrost a pipe. For its execution, you need boiling water and salt, you can mix them in a large tank and pour them into the sewer system. The option has a lot of advantages:

Simplicity;
Efficiency, but only if the plug is located near the outlet of the sewer pipe in the house.

If, however, during the examination of the system, it turned out that the ice plug was formed at a sufficiently large distance, it will be impossible to warm the system in this way: as long as the water is added to the freezing point, it will cool down.

Blowtorch

The method helps, regardless of where exactly the septic tank is frozen. But first you have to dig out the pipe, which in winter is a rather difficult task. In addition, it is not recommended to use a lamp if the pipeline in a private house is made of plastic - the system will simply melt.

Heating with steam

If the burner cannot be used, it is useless to pour water, then how to restore the system and defrost it without consequences? Use a steam generator. This unit is purchased for personal permanent use, and you can also use the services of specialists. What do we have to do:

Start the steam generator;
Insert a hose into a pipeline that is frozen until the end of the hose rests on a layer of ice;
Move the hose even deeper from time to time to remove the ice plug completely.

The plus of the option is safety for the pipe, the minus is the purchase of expensive equipment. In addition, it is not always possible to push the hose so deep that it rests on the cork, sometimes you have to pump out water to do this.

Another variation of this method can be called hydrodynamic flushing. A very practical way that eliminates not only ice plugs, but also possible system blockages. Defrost works by supplying heated water under good pressure. The jet literally washes out everything that prevented the system from working normally.

These were options for internal intervention, but you can do external defrosting, which will be more practical in winter. For example, if the water supply is metal, then a pair of terminals fixed along the edges of the emergency section with voltage applied to them will save the pipeline. In addition, there are the following ways to defrost a septic tank in winter:

Heat gun aimed at the sewer pipeline;
Self-heating cables superimposed on the system.

All operations will be easy to do with your own hands if the septic tank is frozen. Moreover, this can be done if the cork is located at any distance.

Prevention of freezing of the sewer pipeline

In order not to defrost the septic tank in winter, only one thing should be done: lay a heating cable that will protect the pipeline from freezing or wrap the structure with insulation. This step is necessary in the soils of those areas in which frosts are quite severe. Otherwise, you will need to dig trenches many meters deep to prevent the freezing process or stock up on all possible means to defrost water.

Advice! The principle of operation of the heating cable is quite simple: the cable is heated under the influence of current and creates a level of resistance sufficient to prevent the water in the sewer pipes from freezing.

Cables are available in two variations:

resistor - having constant resistance along the entire length (they can warm all sections of the sewer pipe in winter);
self-adjusting– This cable may change its conductive properties depending on local conditions. It turns out that the system itself will heat pipe sections if they are cold and stop heating the pipe if it is warm enough. In any case, in winter, the water in the sewer will not freeze, even with strong minuses.

Advice! A self-regulating cable is more expensive than usual, but the use of such an element in winter will keep the sewage system in working condition, as well as reduce energy consumption. Moreover, if you visit your dacha or country house on short trips, in winter you will not need to manually adjust the heating system. Arrived - rested in the comfortable conditions of a working sewerage system and "forgot" about the system until the next arrival.

clean and dry the surface of the pipeline, otherwise the cable will not be useful in winter;
carefully choose the length of the cable, depending on the footage, impose an element on the pipe with a certain step size or fix a pair of cores on both sides of the pipeline. From above, you can fix the cable with adhesive tape, with a mandatory layer of foil, so that in winter the water warms up as best as possible and the septic tank does not freeze;
screw the insulation onto the pipeline and it will be necessary to fill up the trench, and gravel screening can go to the layer closest to the pipe so that the pipe does not “play” when the soil moves.

If necessary, the cable can be cut into pieces of the required length, and after installation, the cable is connected to a shield or socket. Preventive measures do not preclude a preliminary or frequent check of the system for blockages (it would be better to thoroughly clean the pipeline before the onset of frost), as well as conservation of the entire structure.

So, freezing of the sewer pipeline in the winter can be prevented if preventive measures are taken. But even if trouble happens, you can always understand why an ice plug appeared and choose a way to eliminate the shortcomings, choosing which one will be better in a given situation.

July 6, 2016
Specialization: a professional in the field of construction and repair (a full cycle of finishing work, both internal and external, from sewerage to electrics and finishing work), installation of window structures. Hobbies: see column "SPECIALIZATION AND SKILLS"

The question of what to do - if the sewage system is frozen in a private house, usually arises suddenly. As a rule, the problem is detected either in the morning after a frosty night, or upon arrival home after a fairly long absence. In any case, there is little pleasant here, but the problem is completely solvable.

Why the sewer freezes, how to restore its performance and how to prevent such a development of events - I will talk about all this in the article, based on my own experience.

Causes and consequences

With the onset of cold weather, when the night temperature drops below zero, there is a risk of sewer pipes freezing. As a result, ice plugs form in the cavities, which block the movement of drains.

Normally, a properly laid and normally functioning sewer should not freeze. However, there are factors that can cause the entire system to fail. The most important of them I will give in the table:

Cause	Why does it freeze?
Shallow laying	As a rule, the outer part of the sewer network is laid in the thickness of the soil. In addition to purely aesthetic reasons, this is due to the desire of each of us to protect the pipe from the cold, since the temperature on the surface of the earth will always be lower than at depth. However, during severe frosts, freezing can also affect the deep layers of the soil along with the pipes laid there. To avoid this, I strongly recommend that before starting work on laying sewers, study the climate information about your area and determine how deep the ground freezes.
Lack of insulation	All pipelines that are laid outdoors, in the ground, in unheated or periodically heated rooms must be equipped with thermal insulation. If this is not done, then even a small area in the basement of the building can become a source of problems with the formation of ice plugs. Of course, the thermal insulation of pipelines increases the cost of construction, but still the price of insulation is much lower than the cost of repairing or overhauling the entire system after a blast, especially unpleasant in winter. As my personal experience shows, attempts to save on thermal insulation only lead to an increase in costs.
Blockages inside the pipe	In order for the pipe to freeze and form a critical mass of ice in it, it is necessary that there be some kind of content inside. Normally, sewer pipes are empty most of the time, but if you neglect their regular cleaning, then a blockage may form at the turn or junction of the knees, on which ice will gradually accumulate. The result is predictable - sooner or later the entire gap will be blocked. By the way, a decrease in the flow rate is a universal diagnostic feature. If you notice in time, you can fix the problem before it goes into a critical stage.
Insufficient slope	The rapid removal of wastewater from the lumen of the pipe is also facilitated by its laying with a slope towards the collector, septic tank or cesspool. The optimal slope angle is 3-4 degrees, and if you make it smaller, then the risk of stagnation of the liquid and, as a result, its freezing, increases significantly.

In addition to the above reasons, the efficiency of drainage in a septic tank or other reservoir also plays a role.
If the storage tank is full, then the water from the pipes simply has nowhere to go.
That is why in my house, before the onset of cold weather, I always inspect the septic tank, and if it is more than half full, I pump it out.

As a rule, these factors alone rarely lead to the formation of ice jams, but if two or three of them become relevant at the same time, then problems cannot be avoided. The results of such a coincidence are usually quite sad:

since the drain is completely or almost completely blocked, it will not be possible to use the sewer until the reasons for the blockage are completely eliminated. The alternative - an outdoor toilet - does not seem attractive in winter;
when the liquid freezes, it expands, which can lead to swelling and rupture of the pipe. It is especially unpleasant if the accident occurs either in the basement (sad personal experience - until I discovered the problem, it leaked fairly), or underground (digging frozen soil for repair work is a dubious pleasure).

Summarizing, I would like to say one thing: it is better not to freeze sewer pipes, timely identifying and eliminating possible causes. However, we can all make mistakes, and therefore it is very important to know how to fix them, and how to break through a frozen sewer with minimal time, effort and money.

We solve the problem

Recipe one - washing with hot water

Having discovered that the sewage system is frozen and “no longer flows” through the pipes, many act purely instinctively - turn on the hot water tap at full power and try to fill the entire pipeline with liquid.

This measure can only be effective if the freezing is light enough, but then it is enough to wait a few minutes and the situation will resolve itself.

If the problem is serious enough, then its solution is complicated by the fact that by the time hot water enters from the tap, cold water is already in the pipes. Therefore, at one time I decided to act more inventively:

Before defrosting the sewer - if they are frozen, it is necessary to localize the location of the ice plug as accurately as possible. As I noted above, the problem areas are turns, pipe joints, as well as horizontal sections without proper insulation.
When we more or less accurately establish where the water has frozen, we get to the nearest revision and open it, gaining access to the pipe lumen.

I hope that when laying the external sewage system, you followed the instructions quite strictly, and were revision wells equipped at every turn and at least every 10 meters on flat areas?
If not, then I have bad news for you - you are suffering pretty much ...

We take a cable that is used to clean the sewer, and a long thin hose. We attach the hose to the cable with adhesive tape so that the end of the cable with a spiral nozzle for breaking blockages protrudes by 3-5 cm. Additionally, you can fix the hose along the entire length with intercepts every 50-70 cm.
We start the cable with the hose into the pipe lumen and gradually push it until we hit the ice plug. With a few movements we try to destroy it - we most likely will not succeed, but it's worth a try.
We insert a funnel into the free end of the hose, which we then additionally fix so that we do not have to hold it with our hands.

Now we are preparing a salvific solution: boil three to five liters of water, add five to six tablespoons of salt (or more) to the water, mix and pour into the funnel immediately after the crystals have dissolved.

If the revision is very close to the frozen area, then part of the boiling water may pour out of it (in my case, it turned out that way).
We are taking precautions!

After waiting two or three minutes, we push the cable forward, destroying the ice plug. If it fails, we repeat the operations with pouring boiling water.
When the problem is fixed, we close the revision and flush the pipe with plenty of hot water to remove the remnants of frozen drains.

Recipe two - heat treatment

If the thickness of the plug exceeds 20 - 30 centimeters (it is not clear how the sewage can be brought to this, but I had to deal with this situation at least twice), boiling water does not help. You will have to use improvised means:

The old heating element (namely the old one, since the probability of its failure during operation is very high, so we take what is not a pity) we connect to two insulated wires. We carefully wrap the contact point with electrical tape so that liquid does not get inside.

We wind the wire with the heating element to the pipe cable. If a hard cable is used, then you can do without a cable - anyway, we will not use its nozzle to destroy the cork in this situation.
Through the revision or the removed knee, we pass the entire structure into the lumen of the sewer and move it to the place where the ice plug forms.
We turn on the heating element, making sure that we ourselves do not come into contact with the wet walls of the pipe - although we took care of the insulation, we should be careful.

If a metal pipe froze, then I would not risk using electrical appliances.

Gradually we move the heating element deep into the pipe, trying to melt at least a small through hole.
As soon as the movement of effluents is restored, we remove the heating element with the cable and simply flush with hot water.

In fairness, it should be noted that in such a difficult situation I did not always manage to cope with my own hands. If the idea with the heating element was not successful, then you should contact the local Vodokanal: usually this organization has powerful steam generators with a rigid hose that allow you to melt the ice inside the pipes. Naturally, you will have to pay for the departure of the repair team.

Recipe three - external heating

If we have access to a frozen section of the sewer, or we can provide it (from my point of view, sometimes digging half a meter of frozen soil is quite an acceptable price for being able to solve the problem without losses), then the situation is noticeably simplified. What to do - if the sewer pipe is frozen - we will tell below:

Metal pipes (steel and cast iron) are quickly put in order with a blowtorch. We simply turn on the device and flame the pipe walls against the ice plug: usually two or three minutes is enough for me to completely eliminate the blockage, but if you have no experience, it is better to take a little longer, but not damage the pipe itself.

Plastic pipe should not be exposed to open flame. The area under which the ice is located is wrapped with rags and poured with boiling water, creating a “bath effect”. The procedure takes me longer than when working with a blowtorch, but not by much.

Quite often, ice accumulates in tees, which are quite problematic to warm up. To enhance the effect, I tried to put a container of boiling water under the tee: the rising steam heated the walls of the pipe in their coldest part, and the cork turned out to be hot water.

Boiling water, of course, needs to be topped up periodically.

If you have a household steam generator, for example, included in the car wash kit - great! We use it in the same way as a blowtorch: a jet of steam directed at a sewer pipe is not too inferior in effect to a flame, but it can be used for metal, and for plastic, and for ceramics.

Finally, there is a very extreme method - electric defrosting. We install terminals on the surface of a metal pipe and apply voltage to them. The pipe heats up, the ice melts, the movement of effluents is restored. The main difficulty: a professional electrician must perform all operations!

Prevention

thermal insulation

If we are only planning to lay sewers, or if we have solved the freezing problem, and do not want it to happen again, then it is worth figuring out how to avoid such a development of the situation. The easiest way is to initially lay the pipes correctly, and you can do this by doing the work the way I once did on my site:

We lay the outer part of the system in trenches, the bottom of which is below the freezing level of the soil. For most regions, this depth is from 0.8 to 1.5 m, but sometimes you have to go deep to 2 - 2.5 m.
At the bottom of the trench we pour a sand cushion about 15 cm thick.
We lay the sewer pipe in thermal insulation. I used a casing made of mineral wool, but you can also take a "shell" of polystyrene foam or simply cover it with sawdust with a layer of 25 - 30 cm.

We fill the sewer with clay from above, and then with the earth taken out when digging a trench.
The areas passing along the surface are also carefully insulated using material at least 50 mm thick. The same applies to sewer pipes that run in unheated rooms.

Cable heating

However, even the thickest layer of thermal insulation cannot always cope with a sudden sharp drop in temperature. In addition, in some regions of Russia it is very difficult to lay a sewer below the level of soil freezing - you will have to dig a trench well for two meters. In this situation, active heating saves with the help of special ones.

Frost prevention is carried out in the following way:

A self-regulating conductor (my choice, since it won’t overheat or burn out with a guarantee) or a wire connected to a thermostat (a cheaper option), wrap around the pipe or lay it on its surface.

The design of some cables also allows for internal installation.
By the way, they can be used not only in sewerage systems, but also in water pipes.

We fix the heating element with the help of metallized adhesive tape, which contributes to the concentration of the generated heat.

From above, I mounted a heat-insulating shell - in any case, it will not be superfluous.
When cold weather sets in, I connect the cable to the mains. When current passes, the conductors heat up, giving off heat to the walls of the pipe and preventing its contents from freezing.
In addition to preventive work, cables of this type (of course, pre-laid along the pipe) can also be used to eliminate ice plugs that have already formed. It is enough just to turn on the heating element in the system, and in half an hour or an hour the problem will be solved.

Conclusion

So, I hope that I managed to explain in an accessible way what to do - if the sewer system is frozen, and what to do so that it does not freeze. The video in this article will help you solve the problem in a difficult situation, and if you have any questions, you can always ask them in the comments and get my detailed answer.

The work of the sewer is imperceptible as long as everything goes as expected. The design and installation of a sewer system is accompanied by taking into account many factors, including work at low temperatures. However, the situation is not excluded when the sewage system freezes in the ground (a certain section of the pipe freezes). Under normal conditions, this should not happen, but laying errors can occur in winter.

By the way, when trying to understand at what temperature the sewage system freezes, one should take into account not only the location of the pipes, but also the material from which they are made (the thermal conductivity of plastic and cast iron is very different), the diameter of the pipe, the angle of inclination, i.e. action of many factors in combination.

Why does the sewer freeze?

Causes of freezing sewer pipes:

incorrect design of the angle of inclination of the sewer pipeline. Water does not have the ability to move by gravity, stagnates in pipes, which leads to freezing in winter;

insufficient depth. The septic tank according to SNiP is installed at a depth of at least 2 meters from the soil level, the pipe system is located below the freezing point characteristic of the region. But a situation is possible when it’s just too lazy to dig a trench for laying pipes deep (or not possible) or frosts exceed the average and the soil freezes deeper;

lack of insulation. Sewer pipes laid above the freezing point of the soil need to be insulated. The place where the pipes exit the room must also be insulated. However, in practice, such a requirement is either ignored, or an unsuitable heat-insulating material is used, or its installation is incorrectly performed;

small diameter pipes. If we consider consumer reviews, then most often those who laid pipes with a diameter less than the recommended 110 mm face the problem of sewer freezing. Especially often the owners of dachas and seasonally operated houses sin with this. Due to insufficient diameter, the sewer pipe freezes faster;

blockages. They happen due to the ingress of large objects into the system or insufficient water flow, in which plaque forms in the pipes.

Causes of septic tank freezing:

septic tank is broken. At the same time, the septic tank overflows, heavy fractions settle, and the water freezes;

the septic tank is removed from the sewage source. Then the water, moving to the sewage pit, cools, which leads to its freezing at the junction of the pipe to the septic tank.

Many users who do the work themselves do not even think about whether the sewer freezes. After all, the very principle of operation of a septic tank is that it is a container for storing wastewater with actively ongoing decomposition processes. Since heat is released during the decomposition of solid residues, freezing is practically excluded. In addition, according to the standards, the septic tank is installed at a considerable depth.

However, no one is safe from force majeure, and it is better for the owner of a country house to know in advance what to do if the sewer is frozen.

How and how to defrost the sewer in a private house

There are different ways and means of how to warm up a frozen sewer (than to melt the ice in a pipe). All methods can be combined into two large groups:

thermal method. Provides for the organization of heat supply to the place of freezing. Work is progressing slowly, but there is no risk of damage to the piping system. This method is most suitable at home, when special tools are not at hand, and calling specialists is impossible or too expensive;

chemical method. Currently, chemical defrosting is rarely practiced. Firstly, because not every chemistry can cope with icing. Secondly, because it is a costly method. And, thirdly, because many users prefer local sewers, i.e. systems capable of performing partial wastewater treatment.

One of the components of local systems is the presence of biological treatment, and chemistry can adversely affect the vital activity of bacteria. However, its simplest variety - a cool brine is used according to reviews, so far.

A more technological option, the use of a drug like Mellerud. The ingredients in Mellerud Pipe Cleaner react with water to generate heat.

Note. Care should be taken to use the chemical method to defrost plastic sewer pipes. Because severe overheating can cause them to deform.

Defrosting the sewer - the procedure for performing work

If there is a problem and the sewage system in a private house is frozen, you must first determine the location of the ice plug. Masters note the importance of following the order of work, and it is better to start from the place where the water leaves the septic tank. This order of work is due to the fact that the sewer pipe system is designed with the obligatory condition to ensure unimpeded water flow. This means that all pipes, incl. the drain pipe is located under a slope to the exit point.

Ice plugs must be melted so that the water can drain naturally. Otherwise (when performing work outside), you need to be prepared for the fact that the drains will go in the opposite direction, which will make it necessary to pump them out. This convincingly proves that you need to start work in the direction from the septic tank to the internal pipes.

But there are exceptions to this rule. Ultimately, the order of work will be determined by factors such as:

location of the ice block. If the water is frozen in the inside of the sewer (unheated house), then it will be much easier to defrost;

tube sizes. Perhaps the size of the ice plug will be only a few centimeters, then the volume of water that needs to be pumped out can be neglected;

geometry of the sewer system. The more straight sections in the system, the easier it is to eliminate the ice plug;

laying method. Typically, sewerage is located underground. And if ice has formed in pipes located at a sufficient depth under a layer of frozen earth, the number of options for use is drastically reduced. You can’t get out of the septic tank - you have to work from the premises of the house.

The easiest way to establish the winter operation of the sewer system is to contact specialists who provide sewer defrosting services. Masters not only know how to defrost a frozen sewer, but also have special equipment, and also give a guarantee for work. However, for various reasons, many prefer to solve the problem on their own. And as evidenced by the reviews of members of the forum, quite successfully and quickly.

What to do if the sewerage system in a private house is frozen

Heating methods will differ depending on the location of the ice plug. Consider each problem and possible solutions.

Frozen sewer drain

The sewer drain or drainage from the septic tank rarely freezes, because. it is located deep in the earth. However, if water is not drained, the septic tank will overflow and freeze.

What to do if the sewer drain is frozen?

To defrost the drain, experts advise pouring hot water or saline over the septic tank. Then you should pump out the drains from the septic tank, and repeat the filling of water. Over time, the warm water will clear the ice block and the system will function normally.

A sewer drain is also called a pipe that drains wastewater from the source of their formation: in the sink, toilet, bathroom. It can freeze if the room is not heated and the drain has not been drained. Or, the water flow is too weak. As a rule, the indoor drain freezes at the junction with the drain source and is easily removed by using a hair dryer. In the same way, the problem is solved if the sewer riser in a private house is frozen.

Frozen septic tank

This is possible if the drain is not properly organized.

What to do if the septic tank is frozen?

To fix the problem, you can take the following steps:

lamp heating. The light bulb on the carrier is placed inside the septic tank. Due to the power of the lamp, the environment is heated, and the ice gradually thaws. The method is very slow, besides, you need to monitor the water level and lower the lamp lower. From practice: 1 m of ice melts per day, at a temperature outside of -15 degrees;

pouring hot water with subsequent pumping;

backfilling in the septic tank of quicklime. Users note the effectiveness of the method in the cesspool, but this method is unlikely to be suitable for a septic tank.

Frozen sewer pipes

The most difficult possible situation, since there are two obstacles: firstly, the pipes are located underground, which makes it problematic to use external heating, and secondly, it is difficult to pinpoint exactly where the pipe has frozen.

How to find places where ice blocks form?

You can determine the freezing point using two pieces of wire. To do this, one of them must be brought into the sewer system from the side of the house, and the second from the side of the septic tank. Knowing the length of the sewer and the sum of the distances that the wire managed to advance, it is possible not only to find (reveal) the place where the ice plug formed in the pipe, but also its dimensions.

What to do if the sewer pipe is frozen?

Ways to remove ice plugs by heating.

outdoor heating

It involves the extraction of soil to the level of pipe laying. After direct access to the pipes has appeared, you can:

use an open fire: burner, blowtorch. You can wrap the pipe with rags or overlay with firewood and set it on fire. The method is only suitable for metal, cast iron sewer pipes;
wrap with foil, then with a heating cable and connect to the network;
use heating tape;
use a building hair dryer for plastic pipes.

Recommendation. Users are advised to cover the place of heating with insulation, so defrosting will be faster. At the same time, passive heating in itself is not suitable in case of freezing sewer pipes, because. thermal insulation material does not heat, but only saves heat.

External heating is not very popular due to the difficulty of excavating frozen ground above the piping system. This begs the question, how to warm up a frozen sewer, which cannot be accessed? The answer is obvious - only from within.

Internal heating

The technology involves the impact on the ice from the inside, i.e. directly inside the sewer pipe. Options include:

heating the wall if the sewer pipe is frozen in the room;

use hot water.

In order to clean the direct pipeline, you need to bring a rigid hose into the sewer, connect it to a funnel into which water is poured. As the ice melts, the hose can be advanced further. You can increase the effectiveness of the procedure by using water with salt. The ratio is offered different from 1:10 to 1:1 (salt: water).

To defrost a sewer pipeline of complex configuration, the same steps are performed, but a flexible hose is used. The hose is attached to the flexible wire with a step of 500 mm, so that the edge of the wire protrudes 20-30 mm above the edge of the hose. The end of the wire is bent inward for rigidity. The free edge of the wire should be 10-15 mm, its task is to bypass obstacles and lead the hose. As the water melts, the hose is pushed further. Instead of a funnel, you can use a pear.

When choosing this method, you need to consider that:

a) the water temperature must be more than 80 °C;

b) water supply is carried out continuously;

c) excess water will come back, so you need to install a container under the pipe to collect it.

The productivity of the method is 1 m per hour, with a pipe diameter of 110 mm.

use of a welding machine connected on both sides to the pipe. Suitable for metal pipes;

use of any alcoholic liquid, for example, alcohol. From practice, the volume is 1 m.p. pipes with a diameter of 110 mm is 8 liters. This method is costly;

using a steam generator.

What to do so that the sewer does not freeze in winter?

To prevent repeated freezing, it is necessary to periodically drain (especially during severe frosts) significant volumes of hot water into the pipeline.

Solving the problem of freezing water in the sewer should not be limited to bringing the system to full functional readiness. After all, the possibility of re-freezing is not excluded.

Measures to prevent freezing of sewers include:

correct . This procedure must be carried out at the stage of laying the pipeline;
laying pipes to a depth below the freezing point of the soil;
connection of a heating cable (resistive or self-regulating).

Construction work is carried out at any time of the year, despite the cold or heat. It is not always possible to choose a season that is comfortable for work, since the deadlines for the completion of an object are running out.

In general, the installation of a septic tank in winter is carried out in the same sequence as at any other time of the year, however, there are a number of features that should be taken into account during installation. Knowing the basic rules for installing and connecting a treatment plant, it will be possible to avoid a number of mistakes and prevent damage to expensive equipment, agree?

The article outlines the pros and cons of performing installation work in the cold season, and shows common mistakes made by inexperienced craftsmen. A step-by-step installation instruction is also described and recommendations are given for the conservation of the septic tank for the winter.

Some mistakenly assume that it is impossible to install a septic tank in the winter, and wait for spring to start installation. However, this is not the case. You can put a septic tank on your site at any time of the year, moreover, in some situations, installation can only be done in winter. This happens when the groundwater level is high.

In the spring, during the mass melting of snow, the GWL rises to critical levels. A situation may arise when a newly dug pit is filled with water at high speed. And then installation is out of the question.

So it’s better to suffer a little with the upper frozen layer of soil - it usually does not exceed 100 cm.

Image Gallery