How to make a septic tank from eurocubes with your own hands - detailed photo-installation instructions

How it works?

Septic tank from eurocubes, scheme

The waste liquid through the plumbing drain holes enters the sewer pipes connected to the inlet pipe of the septic tank. Through this branch pipe, drains with various kinds of pollution are poured to the bottom of the first Eurocube. Thanks to gravity, the effluent settles in this tank, and it separates into heavy solids, fats, and gases. The directly primary clarified liquid is located in the center, between the layer of bottom silt deposits and the surface crust.

Through the overflow channel connecting both eurocubes, the liquid flows into the second cube for post-treatment. At the same time, fats and solid fractions do not enter the pipe.

In the second eurocube, the liquid is purified by biobacteria, which are periodically added from the outside in the form of concentrates (bioseptic preparations). Microorganisms perform post-treatment of water, and after this process, the liquid is poured into a drainage, storage tank, ditch, etc.

Advantages and disadvantages of a device from eurocubes

The design of eurocubes has the following advantages:

1. This plastic container withstands pressure, and is also not affected by external irritants and aggressive environments.
2. This design involves a certain number of cubes that are connected in a special way, this ensures complete tightness.
3. Installation of this type of station allows you to save a huge amount of money, as it is cheaper than plastic installations or ready-made stations, for example, like a Chistok septic tank.
4. Ease of maintenance and operation.
5. No unpleasant odors in the area.
6. It can function all year round, does not lose the quality of wastewater treatment even in winter at sub-zero temperatures.
7. Installation is carried out at any time of the year, in any type of soil, even with a high level of groundwater.
8. You will be able to implement the installation without the help of workers in the shortest possible time.

What is a eurocube - consider its design

A Eurocube is a special container, the main purpose of which is the transportation and storage of various liquids: food, water, fuel, etc. The construction is made in most cases from polyethylene.

The purpose determines the presence of thick walls with increased strength.Buying a eurocube is not particularly difficult; this can be done in various large hardware stores. In most cases, such structures are used to store water in country cottages.

Such products have some features that it is desirable to know about before purchasing:

• made of low pressure polyethylene;
• have a neck with a cross section from 140 to 230 mm;
• at the bottom of the structure there is a branch pipe for connecting a drain pipe, with a diameter of 45 to 90 mm;
• the strength and reliability of the eurocube is increased due to the additional reinforcement of the outer walls of the product with a steel mesh.

Such models are best suited for the construction of an autonomous sewage system. You can build a septic tank from eurocubes with your own hands using diagrams and installation instructions.

Such a sewer can function without problems for many years, although it requires periodic maintenance. It is able to effectively serve a suburban area or a house with a small number of residents.

Arrangement features

Do-it-yourself sewage from Eurocubes is distinguished not only by reliability and long service life, but also by efficiency. Below is a finished detailed diagram of the nodes of a two-chamber septic tank with ventilation and a concreted cushion.

However, there are some features and subtleties that it is recommended to learn about before starting the process of its construction:

the installation procedure involves a large amount of work, so it will take some time, as well as the help of several people. It will be necessary to dig a sufficiently large pit and lower the product into it. It is very difficult to do it yourself with your own hands, because

the eurocube has a large size and weight;
it is important to follow all the rules for the installation. If the preparatory procedure is not performed correctly or the technology is violated, then the septic tank will be exposed to the negative effects of the environment and will quickly be damaged under its influence;
you will need to take care of the presence of an additional filtration system, since, for example, a do-it-yourself septic tank made of Eurocubes can only clean about 50% of waste liquids

Therefore, before the start of construction, it is imperative to think over additional purification (arrange filtration fields, infiltrators, etc.) and allocate space for it on the diagram.

Installation and installation

For the arrangement of a septic tank, consisting of European cubes, you should choose the right place in the country, while not very far from home.

It is better if the place is located in open space and at a sufficient distance from the flow of groundwater.

Having decided on the place, it will be necessary to measure and mark it, and only after that proceed with earthworks.

In the event that there is no groundwater nearby, then at the bottom of the pit it will be enough just to equip pillows of sand and gravel.

Otherwise, the bottom of the pit will need to be filled with concrete. Next, you should carefully lower the very structure of the Eurocubes into the pit and connect it to the sewer system coming from the house.

More on this in the video below.

Video:

Also, the prefabricated structure must be connected using a special pipe with a drainage well, where the sewage sewage that has been cleaned will go.

Experts recommend equipping this outlet pipe with a check valve that will prevent various waters from entering the septic tank in the opposite direction.

The upper part of the device and all its side walls must be insulated. This can be done with foam sheets.

Further, protective boards or sheets of corrugated board are laid on top of the septic tank, which will prevent the deformation of the entire structure as a whole.

After that, both eurocubes should be filled with water and backfilled with soil.

You should also carefully equip the upper part of the septic tank, while not forgetting, if necessary, to provide easy access to the septic tank structure.

The installation process of a septic tank based on Eurocubes is described in detail in the video posted above.

Instructions for installing a septic tank

The creation and installation of a septic tank from eurocubes includes the following stages of work:

1. design work (stage 1);
2. preparatory work (stage 2);
3. assembly of a septic tank (stage 3);
4. installation of a septic tank (stage 4).

At the first stage of work, it is necessary to determine the type of septic tank and the place of its installation. In this case, the following operations are performed:

1. Estimation of the required capacity of the septic tank. The size of the septic tank depends on the time the septic tank is used and the number of residents in the country house. During temporary residence in the country in the summer, a small-capacity septic tank is used. At the same time, the required volume of the septic tank V in liters can be determined by the formula: V = N × 180 × 3, where: N is the number of people living in the house, 180 is the daily rate of wastewater in liters per person, 3 is the time for complete wastewater treatment septic tank. As practice has shown, two eurocubes of 800 liters each are enough for a family of 3 people.
2. Determination of the location of the septic tank.It is recommended to locate the septic tank at a distance of at least 50 m from the drinking water intake, 30 m from the reservoir, 10 m from the river and 5 m from the road. The distance from the house should be at least 6 m. But too much distance from the house due to the need to slope the pipe causes an increase in the installation depth of the septic tank and an increase in the likelihood of blockage in the sewer pipe.

Stage 2 works include:

1. Digging a pit for a septic tank. The length and width of the pit must correspond to the dimensions of the septic tank with a margin of 20-25 cm on each side. The depth of the pit depends on the height of the tanks, taking into account the sand and concrete cushions, as well as the slope of the sewer pipe. In addition, it must be taken into account that the second container is shifted by 20-30 cm in height and, therefore, the bottom of the pit will have a stepped appearance.
2. At the bottom of the pit, a sand cushion is laid. If the GWL is high, then a concrete pad is poured, in which loops are installed for attaching the septic tank body.
3. Preparation of trenches for the sewer pipe and drainage system. A trench for a sewer pipe is dug, taking into account the slope towards the septic tank. This slope should be 2 cm for every m of pipe length.

At stage 3, a septic tank is assembled from eurocubes.

Materials for creating a septic tank:

• 2 eurocubes;
• 4 tees;
• pipes. Pipes are needed to connect a septic tank and drain treated water, to make ventilation and an overflow system;
• sealant,
• fittings;
• boards;
• Styrofoam.

As a tool at this stage of work, you will need:

• Bulgarian;
• welding machine.

When assembling septic tanks from eurocubes, the following operations must be performed:

1. Using caps and sealant, plug the drain holes in both eurocubes.
2. Using a grinder, cut U-shaped holes on the container lids through which the tees will be installed.
3. At a distance of 20 cm from the upper edge of the body of the first vessel, make a hole 110 mm in size for the inlet pipe.
4. Insert a branch pipe into the hole, attach a tee to it inside the eurocube, seal the connection of the branch pipe with the body wall with sealant.
5. Cut a ventilation hole above the tee and insert a short piece of pipe into it. This hole will also serve to clean the channel.
6. Cut a hole for the overflow pipe at a distance on the rear wall of the housing. This hole must be below the inlet.
7. Insert a piece of pipe into the hole and fasten a tee on it inside the eurocube. Cut a ventilation hole above the tee and insert the pipe in the same way as in step 5.
8. Move the first container 20 cm higher than the second. To do this, you can put under it
9. lining.
10. On the front and back walls of the second vessel, cut holes for the overflow pipe and outlet pipe. In this case, the outlet pipe must be lower than the overflow pipe.
11. Tees are attached to both pipes inside the vessel. Ventilation pipes are installed above each tee.
12. Connect the overflow outlet from the first container and the overflow inlet of the second container with a pipe segment.
13. Seal all joints with sealant.
14. Using welding and fittings, fasten both bodies into one.
15. The cut U-shaped holes in the covers of Eurocubes should be sealed and welded with a layer of waterproofing.

At the 4th stage, you need to perform the following operations:

1. Lower the septic tank into the pit.
2. Connect the sewer pipe and the pipe leading to the aeration field.The outlet pipe is equipped with a check valve.
3. Insulate the septic tank with foam or other material.
4. To protect the walls of the septic tank, install boards or corrugated board around it.
5. Backfill after filling the septic tank with water. In areas with high GWL, backfilling is carried out with a mixture of sand and cement, and in areas with low GWL, soil with sand and tamping.
6. Concrete the top of the pit.

How to install a septic tank with your own hands

The installation of a septic tank begins with determining the location. It must be borne in mind that the distance from the water supply system to the septic tank must be at least 50 meters. You should not build a structure too close to the foundation, but it is not recommended to move too far away either. A distance of 6 meters will be the most optimal.

Having chosen a place, you can begin to prepare the pit for the tank and the base. The volume of the installed chamber will determine the size of the pit itself for the septic tank, taking into account 15 cm from all sides. Accordingly, the depth depends on the size of the tank, as well as the slope of the sewer system.

Scheme of installation of eurocubes under a septic tank underground

The pit is filled with 15 cm of concrete, while loops are made on which the Eurocube will be anchored under the septic tank. Now you can start preparing the trench to the place where the septic tank will be installed. The slope is made towards the container. The trench must be sprinkled with gravel from the sides and insulated.

Important! In order for the sewer line to be organized without problems, the pipe must be laid with the calculation of two centimeters of recess per one meter long. Preparing a septic tank for operation

Preparing a septic tank for operation

Before installing the container, it must be prepared.The first stage involves sealing the drain of the container, which is located at the bottom of the tank to prevent leakage of sewage waste. Then ventilation holes are made, as well as the inlets and outlets of the branch pipes, the tightness of which must be verified after completion of the installation work.

One cube must be lower than the other so that the particles, depending on the density, can settle at the bottom or undergo natural cleaning by bacteria. So that there are no leaks at the pipe joints, you can use a sealant or liquid rubber. After carrying out all the necessary operations (preparation and checking of connections), the septic tank is determined in the place allotted for it. Now you can securely fix it with pipes.

Welding of one level of the eurocube below the second and waterproofing

high groundwater level

In this case, the eurocube may float, and at the same time damage the connecting elements. The solution to this problem is quite simple.

A compartment is being constructed in which a pump with a switch in the form of a float is placed. It pumps water into a compartment that is above groundwater.

It happens that the European Cup, having a heavy weight, simply crushes the ground. What to do if the container crushed the soil?

Looseness of the soil can be eliminated by compacting it or installing slate, corrugated board, or OSP panels. Then you can proceed to the final filling of the tank (without forgetting about the insulation of the septic tank). Installation and installation of the sewer line can be considered complete.

What to consider when installing

When making a VOC with your own hands, which has been working without pumping for 10 years for home and summer cottages, it is necessary to take into account several general and particular rules:

1. Location regulations.You can not install a septic tank in an arbitrary place. It contains substances and chemical processes that can poison the soil. From residential buildings, both own and neighboring, the septic tank should be located at a distance of at least 5 meters. From a well or well - 50 meters. Surface water - 30 meters. Trees and plants - 3 meters.
2. Entrance for the car of vacuum trucks. A do-it-yourself septic tank from Eurocubes without pumping out may require cleaning in 10-15 years, therefore, most likely, a car entrance will be needed. This requirement is not regulated by law and sanitary standards, but acts as a recommendation.
3. Mandatory installation of a riser at the stage of digging a pit.
4. With a high level of groundwater, it is necessary to install special eyes. They will help keep VOCs from surfacing.
5. Freezing depth. Depending on the specific region, the freezing point may vary. In the European part of the CIS, it is 1.3 meters. Pipes must be below this depth.

Excavation

Before you sewer in a private house, you need to dig a pit. This is the main labor part of the work, requiring a lot of time and effort. With a tape measure or a long ruler, you need to remove the main dimensions from the eurocube: length, width and thickness. These are the starting parameters, to which you need to add an additional 40 centimeters. That is, with the parameters of the cube 105x85x95, it turns out - 145x125x135.

It is these dimensions that should be a pit exclusively for the tank. 15-30 centimeters are added to it for arranging a concrete lining.

After finishing digging, you need to fill the surface with concrete.It is not necessary to take heavy stamps, but it is desirable that they be waterproof. The layer must be even. It is necessary to mount additional loops in it for fastening the structure.

Tank Modification

Before immersing the container in the pit, they need to be prepared.

1. Containers have special drain holes, which are made at the manufacturing stage. They need to be covered with a sealant, for example, sanitary.
2. In the side walls of the tanks you need to make holes for the inlet and outlet pipes. Since the metal is thin, you can make them with an ordinary screwdriver and a ballerina drill (ballerina). Here it is worth considering the slope, which is necessary for the normal outflow of waste. In the event that it is not available or it is installed incorrectly, the septic tank will not be able to process waste. Often each subsequent tank is set 20 centimeters lower, which allows you to maintain the desired angle.
3. A sanitary tee is installed for each tank. It can be installed in the factory opening. If it is not wide enough, you can use a larger drill bit or sandpaper. One hole is needed for the inlet pipe, the second for further connection to the next compartment. The top is necessary for the removal of gases.
4. All joints are tightly treated with sealant.

Direct installation

How to properly mount a septic tank based on a combined container? This technology is easy to install and even a beginner in plumbing equipment can handle it.

In a private house, installation follows the instructions:

1. The septic tank must be carefully installed in the pit. It is better to do this with helpers so as not to scratch or pierce the container body.
2. With the help of slings or eyes, the pit is attached to the concrete surface.
3. Pipes are installed in the trenches, subject to the required slope.
4. The pipes are connected to the VOC tank.
5. From all sides, the pipes and the septic tank are closed with a heater.
6. The compartments are filled with water.
7. The distance between the septic tank and the pit is filled with concrete mortar.
8. The pipe and septic tank fall asleep.

After that, you can make a connection in the house. After falling asleep biotic preparations, the septic tank can be put into operation.

It is best to check for leaks before filling the pit with earth. After pouring water into the system, you can walk with a rag along all joints and check the likelihood of leakage. If there are leaks or any breakdowns, they must be closed.

Defects in a metal case can be welded from a sheet of tin. The plastic is closed with a sealant. Frost-resistant automotive compounds designed for low temperatures are better suited.

Do-it-yourself septic tank from eurocubes - instructions.

Primary stage of work.

Before starting work, it is necessary to determine the goals and the desired result of this work. Typically, this process consists of making calculations of the average daily wastewater volume that the septic tank will need to handle during its operation. After you figure out the numbers, you can start acquiring the necessary cubes. When buying them, be guided by the following rule: the volume of the wastewater storage tank must exceed 3 times the daily drains. In addition, the fewer waste containers used, the better, because this will reduce the number of connections between them, which means it will increase efficiency.

At the end of the preparatory stage, you need to dig a pit.By the way, due to the fact that the eurocube is completely sealed, a special drainage system is used to remove sewage, and, therefore, the installation site of such a septic tank is unlimited.

Construction installation.

Having prepared the pit, you can begin work on installing a septic tank. To do this, the bottom of the pit is covered with gravel or sand to create a special pillow. And if there is a high probability of subsidence of the soil under the weight of filled cubes, it is worth playing it safe and making a concrete screed.

Next up is pre-assembly.

To do this, three holes must be made in both cubes and pipes inserted into them, paying special attention to their tightness. If necessary, you can use additional insulation (liquid rubber or special sealant)

final septic installation stage is the formation of an external wall around it, consisting of a concrete screed, which will serve to protect the cube from the ground pressure arising on it. If the soil at the installation site of the septic tank is relatively loose, it will be enough to simply tamp sand around the cubes or simply install OSP corrugated board, slate or panels.

After that, it is necessary to carry out the final backfilling and insulation (it is necessary only under one condition - when the septic tank is operated in a cold and harsh climate). On this, the process of installing a septic tank from European cups with your own hands can be considered finished.

Design features

This design of a septic tank resembles a classic cesspool or drain pit, except that drains have the ability to penetrate into the ground.Ready-made containers for human waste are reliable and durable, they are easy to install and can go a long time without cleaning. If it is not possible to buy a ready-made system, you can make a home-made septic tank of this type. Say, use several PVC barrels located on the same level, but then you will have to independently calculate the size and location of the vent.

Photo - the principle of operation

Advantages of using septic tanks from plastic eurocubes:

1. There is no possibility of contamination of groundwater with faecal residues;
2. The system also performs surface drainage, there is no need to additionally equip the drainage system for the yard;
3. This is a closed septic tank, i.e., unpleasant odors will not penetrate;
4. You can install as many taps as you like, their number may depend on the number of sanitary facilities in the house or other individual features of the building;
5. No problems with pumping water. The process is carried out quickly and does not require the services of professional companies. This is a great option for giving, because septic tanks from eurocubes require almost no maintenance.

But the system has certain disadvantages:

1. The cleaning process is completed in 3 days, which is much longer than with an automated system. But on the other hand, cleaning is carried out by bacteria, which increases the safety of the system;
2. Plastic is a very malleable and brittle material that responds quickly to pressure. If the size of the pit for cups or floating soils is incorrectly calculated, the septic tank may deform, move or even crack.

Such septic tanks are classified by size (volume), number of outlets and the material from which they are made.PVC, rubber and other types of plastic can be used as raw materials. With the choice of the desired volume and number of taps, everything is a little more complicated. Specialists calculate the amount of water consumption.

Photo - a barrel as a cube

Average, per adult accounts for up to 180 liters per day. Water is purified in 3 days, therefore:

180 * 3 \u003d 540 liters requires cleaning within 3 days, if more than 1 person lives in the family, then 540 must be multiplied by the number of residents. For example, suppose there are two adults and one child in the house:

540 * 2 \u003d 1080 liters and a child half as much - 540. In general, the septic tank should hold more than 1500 liters by minimum standards. Eurocubes are made with a volume of 1000 liters, therefore, two cubes are required for such a sewage system. Similarly, with the number of taps. It is necessary to calculate how much sanitary equipment is used and, based on the number of pipes, cut out the required number of holes in the cube for them. It is worth noting that initially the container is supplied with only one hole, which is necessary for proper operation - pumping out sewage and sludge.

Related video:

The principle of operation of a septic tank from eurocubes

Such a septic tank is a single geometric system, which usually includes several containers, although for a small building with a small number of residents and seasonal use, one is enough.

Through the drain sewer pipe leaving the house, dirty water with waste enters the first container. There it is subjected to rough purification, stratification of sewage, dividing them into fractions with different specific gravity.

In the tank, some part of the waste sinks to the bottom in the form of sediment, clarified water is formed in the middle, and gas formations come up.

Waste water treatment occurs due to special microorganisms that use organic waste for nutrition.

In order to have enough of them, a special bacterial mixture is used, which is added to the septic tank.

Through the overflow pipe, the liquid moves to another container, continuing to settle and ferment.

The clarified sewage, cleared of impurities by 60 percent, then flows into the drainage, where it is further cleaned with soil.

Gases emitted from fermentation in tanks: methane, hydrogen sulfide and others, are removed using a ventilation pipe. Heavy fractions are pumped out using a special cleaning pipe.

Work technology

Pit preparation

Its dimensions are determined by the dimensions of the septic tanks. At the same time, it should be taken into account that the containers from all sides will subsequently be insulated and concreted. Therefore, you need to dig a trench about half a meter wide (a margin of 25 cm from each side). As for the length, the need to connect the cubes with an overflow is also taken into account, so they are somewhat spaced apart (by 15 - 20 cm). The depth is recommended at least 0.5 m, but here it is necessary to focus on the characteristics of the climate, more precisely, on the amount of soil freezing.

Platform preparation

Consider one option - drainage into the soil. We will only discuss the features of the second method. So, the most common way to remove waste from the territory is into the ground, and this is done directly through the bottom of the 2nd cube. In this case, for the 1st, a platform is concreted on which it will be mounted.

For 2nd cube at the bottom of the pit some recess is arranged (about 35 - 40 cm). Coarse-grained sand and crushed stone of medium fractions are poured there (layer thickness of about 25 - 30 cm). Thus, it turns out that the difference in height between the containers is approximately 0.2 m.

Tank preparation

In the 1st it is necessary to introduce a pipe of the sewerage system. Between the cubes you need to arrange an overflow (also through a pipe segment). If a “territorial” drainage system (field) is provided, then in the 2nd tank there is one more hole for draining.

In the walls of the containers, holes are cut out quite simply, according to the diameter of the pipes used. Since the cubes are made of plastic, then the pipes must be used from the same material. If you use products made of metal, cast iron, then the difference in the coefficients of thermal expansion will lead to the formation of cracks and subsequent leaks.

The entrance to the 1st container is at the top. The overflow hole on the opposite wall is 15-20 cm lower.

For connections, various tees and transitions are used, among other things. It all depends on the features of the installation of the route, how it fits the tanks, what is the difference in height (if any). Any owner will figure out what he needs.

In addition, in each cube, in the upper part, holes are cut out for ventilation pipes, otherwise gas contamination of the containers with all the consequences cannot be avoided (read more about septic tank ventilation here).

We must not forget about the drainage itself. Therefore, in the bottom of the 2nd container, as well as along the perimeter of the lower part (to a height of approximately 15 cm) a "mesh" of holes is drilled through which the liquid will leave.

Some sites say that this is done through the hole under the vent pipe (after it is removed).But the question arises - what should be its diameter so that you can clean the septic tank with high quality?

Installing cubes

There is nothing to explain here, except for one thing. They must be fixed so that it is possible to produce a high-quality finish with insulation and subsequent concreting. This is done in different ways. Given that the cubes are "dressed" in metal frames, this is not difficult to do. For example, weld them to the loops, hooks specially built into the concrete using strips, a rod.

Connecting pipes (fittings)

All joints must be carefully sealed. To do this, you need silicone sealant. The solution should not be used, as such sealing will not last long.

Exterior finish

As a heater, given the correct shape of the cubes, you can use foam (both from the sides and from above). If you lay mineral wool, how then to concrete? And this must be done in order to prevent the deformation of containers due to seasonal soil displacements.

Applying a layer of solution to the entire surface of the septic tank. Depending on local conditions, additional reinforcement can be made on top of the foam boards.

All that remains is to fill the pit with earth and tamp it well.

Helpful Hints

• Since additional "strengthening" of cubes is provided during the installation process, it is advisable to purchase used products. They are much cheaper - from 1,500 to 2,500 rubles / piece.
• When determining the depth of the septic tank, it is necessary to take into account the features of laying the sewer route from the house. To ensure reliable flow, it should have a slope towards the tanks of about 1.5 cm per linear meter.
• If the groundwater is sufficiently "high", then the autonomous system is mounted according to the "drainage field" option.
• In order to reduce the intensity of the formation of solid fractions at the bottom of the 2nd tank and thereby increase the period until its next cleaning, it is advisable to pour special bioadditives into this cube. They are on sale. This will increase the degree of splitting of solids and reduce silting of the bottom of the septic tank.

Conclusions and useful video on the topic

Video material about earthworks performed for the installation of a septic tank from eurocubes:

A step-by-step video about installing a septic tank from 2 eurocubes with your own hands. In the second part of the video, the fact is confirmed that with a quality installation, nothing is crushed:

A detailed video on the preparation of the eurocube for a septic tank:

Video about the types of containers that can be used to make a septic tank:

Having studied the issue self-manufacturing and installation of a septic tank from European cubes, it is easier to decide whether this option is suitable for a summer residence or a house with permanent residence. This kind treatment plant for local sewerage is easy to implement, but it will require a lot of effort to perform the installation efficiently and correctly.

We are waiting for your stories about how you yourself built a septic tank on a suburban area using waste structures such as Eurocubes. Please write in the block intended for placement. Ask questions here.

How to extend the life of a septic tank from eurocubes

The septic tank does not require special maintenance, but some points should be considered in order to extend its useful life:

1. Once every couple of years, it is required to remove the sediment from the tank;
2. Periodically add supplements.

A do-it-yourself septic tank made of eurocubes is an economical and excellent option for its use in any climate zone.