Do-it-yourself septic tank from eurocubes at a high level of groundwater. Do-it-yourself septic tank from eurocubes. Disadvantages of a cleaning system

One of the ways to ensure high-quality wastewater treatment in a private house or in a country house without extra expenses is to make a septic tank from Eurocubes with your own hands.

The design and features of eurocubes

Eurocubes are a convenient container for storing and transporting various liquids, the shape of which is fully determined by the name. The material for the manufacture of eurocubes is durable non-toxic and chemically resistant plastic. The thickness of the walls allows you to withstand fairly large loads - depending on the model, Eurocubes have a capacity of 800 to 1000 liters. An external frame made of thick steel wire gives additional strength to the products. Outwardly, it looks like plastic container enclosed in a tight cage. To drain the liquid, a hole with a short neck is provided, which is closed with a screw cap.

as material for self-manufacturing treatment facilities eurocube for a septic tank in the country or in a private house It has certain benefits:

• complete impermeability to water, which avoids the ingress of dirty drains from the septic tank into the ground,
• light weight, which makes it possible to perform all the work on the installation of a septic tank even for one person without the use of special equipment,
• ease of making holes and installing pipes (inlet, outlet and connecting),
• high speed of construction of a treatment plant,
• ease of maintenance of the septic tank,
• enough high efficiency septic tank, subject to proper installation.

Drawing of a septic tank from two interconnected Eurocubes

disadvantages septic tanks from eurocubes according to the owners are:

• low strength of plastic, which increases the risk of destruction in the cold season,
• the need to secure containers, which, due to their low weight in an unfilled state, can “float” during a flood.

It should be taken into account that the shortcomings of eurocubes as septic tanks are relative, that is, they can be largely eliminated in the process of preparing for construction and during installation work.

The principle of operation of the treatment plant

If a septic tank is installed from eurocubes, the scheme most often provides for the presence of two tanks connected in series. In order to fully utilize the volume of the second tank, it is usually placed just below the first. Slowly flowing from one eurocube to another, the effluents get rid of large fractions that settle to the bottom.

The photo shows a diagram of how to make a septic tank from eurocubes from two containers

Designing a septic tank from a eurocube implies that this type of treatment plant is non-volatile. They do not require air flow, which means that there is no need to install a compressor. Septic tanks do not require maintenance costs. Settled sludge and hardly decomposable impurities are broken down by anaerobic (not requiring air) microorganisms. At the initial stage of operation, it is necessary to add bioactivators to home-made septic tanks from eurocubes without pumping out to speed up the cleaning processes.

pumping out Wastewater in this case, a septic tank is not required: clarified drains enter the filtration field, where they undergo additional cleaning, and accumulated sludge can be removed without the use of special equipment, for which it is recommended to provide a special closing hole. The frequency of sludge removal from the septic tank is approximately once every one or two years, in the autumn.

If, having made a septic tank for a summer residence from eurocubes with your own hands, you don’t want to pump out yourself, there is always the opportunity to call specialists with equipment for this.

The required volume of a septic tank is determined as follows: 200 liters of water per person per day are multiplied by the number of family members, and all this is also multiplied by 3. For example, for three people, a septic tank with a volume of 1800 liters, that is, 1.8 cubic meters, will be enough.

Preparing for installation

Having figured out how to make a septic tank from Eurocubes and acquiring the materials necessary for construction, you can proceed with the preparatory work.

When choosing a place where you plan to install a septic tank from eurocubes without pumping out with your own hands, you need to consider that it should be located no closer than 5 m to the house and 30-50 m to the well / well.

The location of the septic tank on the site

The pit for the installation of a septic tank breaks out with a margin. The size of the gap between the walls of the tank and the walls of the pit depends on the features of the chosen design.

• To protect the septic tank from freezing, foam or other moisture-resistant heat insulator is often installed.
• To increase strength, they practice filling the gap with concrete or installing a “box” from boards.

In a dug pit, the foundation is poured from concrete with a thickness of about 20 cm. At the stage of hardening, metal hooks or rings are installed in the foundation to “anchor” plastic containers, which will prevent them from floating.

The formwork for the foundation of the septic tank is stepped, taking into account the fact that the second cube must be installed lower in level than the first.

At the same time dig a filtration trench, in which a perforated pipe will then be laid, diverting clarified drains from the septic tank.

Eurocubes also need preparation for installation. The existing drain hole is sealed. It is too small in diameter and too low to be used for connecting pipes.

Other holes are made:

• In the first cube - for the entrance of the sewer pipe and for the flow of liquid into the second tank.
• In the second cube - the entrance from the first tank and the exit to the filtration field.
• On the upper planes of each cube there is a hole for a ventilation pipe.

For the supply of pipelines, all openings are equipped with tees, and the joints are carefully sealed.

Installation and sealing of pipelines

Installation work

A do-it-yourself septic tank from cubic tanks is installed only after all preparatory work. The concrete of the foundation by this point should gain strength. In some cases, partial filling containers with water so that light tanks do not move with each touch.

Operating rules

For maximum durability of a septic tank from eurocubes and ensuring efficiency, it is important to follow the rules for operating this type of treatment plant:

• periodically introduce special biological products for septic tanks,
• not to allow the maximum filling of tanks in the cold season,
• supply ventilation ducts suction valves or use a common ventilation riser to sewer pipes rarefied air zones were not formed, which prevent the free flow of liquid.

Eurocube septic tank video

And in this section you can watch a video on the topic of our article, which demonstrates the process described above for building a septic tank in the country.

For the construction of a septic tank, it is not at all necessary to build volumetric concrete containers. A local treatment plant with low productivity can be made with your own hands from eurocubes or nylon containers. This article will focus on the design and installation stages of such a septic tank.

Homemade septic tanks inherit the principle of operation ready-made solutions, such as "TOPAS" or "TANK", but structurally they are very different. It is almost impossible to divide the container into chambers: polyethylene is difficult to glue in artisanal conditions, and the narrow neck makes it difficult to work. Therefore, several adjacent containers are used, interconnected.

What containers can be used

For a septic tank, it is advisable to use used containers without damage to the body with the shape of a vertical cylinder or parallelepiped. The wall thickness of the container must be at least 3.5 mm, and the eurocube - at least 2 mm.

Eurocubes, due to their low capacity (1000-1050 liters), are used in septic tanks with a daily capacity of up to 1 m 3 per day, in other cases nylon containers are used. Their volume is not difficult to calculate - the total capacity of the septic tank is chosen equal to three times the daily drainage. And with the number of discharges over 5 m 3 per day, the total volume of the septic tank chambers should be 2.5 times higher.

The dimensions of the aeration tank and the primary settling tank are related as 1.5:1, the second and third chambers are equal in volume. For example, a 6 m 3 septic tank has the following chamber capacity:

1. Primary sump 1500 liters.
2. Aerotank - 2250 liters.
3. Camera deep cleaning- 2250 liters.

In treatment facilities with a volume of more than 10 m 3, all chambers have the same volume.

Features of installation at high groundwater level

It is reasonable to mount home-made septic tanks from plastic containers at low sewage loads - up to 6-8 m 3 per day. Unlike sewage treatment plants with concrete tanks, they have a number of disadvantages.

At the level ground water(UGV) below 1.5-2 meters, the septic tank is mounted according to the standard scheme. But if the groundwater is higher, there is a real threat of backflow and flooding. In this case, it is required buffer capacity with a higher level, into which purified water is supplied by means of an airlift or a drainage pump.

Option for a septic tank high level groundwater: 1 - wastewater inlet; 2 - the first container; 3 - second container; 4 - drainage pump; 5 - ventilation; 6 - buffer capacity; 7 - drainage field

If the GWL is too high (less than 50 cm), there is a possibility of flooding the septic tank through the caisson or the gaps of the drainage channel. These problems are solved in the following ways:

1. Introductory gasket drainage pipe above groundwater level with subsequent warming.
2. The device of a sealed sewer channel.
3. Sealing the caisson, using containers with elongated necks.
4. Installation of a septic tank close to the soil surface and its insulation.

The last point implies the minimum distance of the septic tank from the riser, but not closer than three meters from the foundation of the building.

Earthworks and tank installation

The installation of a septic tank begins after the laying of the sewer channel. For a home-made septic tank, unlike factory VOCs, the height of the tie-in of the inlet pipe is important - optimally 20-25 cm from the top. With this in mind, determine the depth of the pit. Containers are displayed in right order on the planned ground, then mark the contours of the future pit, retreating from the walls of the chambers 25-30 centimeters for backfilling.

The bottom of the pit is poured with concrete, reinforcing with a metal mesh with 4 mm rods and a cell of 60x60 mm. Concrete hardens in 2-3 days, after which it is possible to install the first and third containers, insert the inlet and outlet pipes, respectively. Easy to use for pipe cutting wooden block with two self-tapping screws screwed through it, the distance between the tips of which is 1-2 mm less than the radius of the pipe. With this "compass" they scratch out perfectly round hole at the entry point and insert the pipe. You need to make an effort, but this method makes the adjunction of the walls more dense.

At the pipe entry points, the connection is treated with hot-melt adhesive: first with a white transparent rod, and then with a translucent black one. Tees with a direct outlet are put on the ends of the pipes and placed vertically, the lower end is extended to the middle of the height of the chamber.

Backfill and device of the caisson

After installing all the tanks, a mixture of five parts of sand and one part of cement is prepared, and the gaps between the walls of the tanks and the pit are filled with it. They do this in several stages. First, they fall asleep and tamp the lower layer 1/4 of the height, filling the septic tank with water by a third. In the future, backfilling is carried out to half, and then to 2/3 of the height.

When installing at a shallow depth, it is reasonable to overlay the septic tank with expanded polystyrene plates before backfilling. When the backfill covers the inlet pipe, the PPS boards are cut and laid horizontally, then the septic tank continues to be filled up to the level of the upper wall of the tanks.

The caisson is a technical chamber designed to accommodate equipment. The walls of the caisson are laid out in half a brick so that they protrude 10-15 cm above the ground level, the bottom is poured after inserting the bushings into the upper wall of the chamber. When pouring the screed, the neck of the septic tank is protected by an annular formwork, for example, made of plastic. The caisson can be common or individual for each chamber. In the latter case, bushings for pipes and hoses are laid in the partitions.

The interior of a septic tank

Of the electrical equipment in the septic tank, only a compressor is used, such as Pondtech A-85. An airlift system is used to transfer the mass. The airlift for pumping liquid from the primary clarifier is placed at the level of the inlet pipe, and in the aeration tank it is located 10-15 cm from the top of the chamber. Dropping taps are lowered to the middle of the height of the container. For pumping activated sludge from the aeration tank and the deep cleaning chamber to the primary clarifier, two separate airlifts are used with a common discharge point of 70-100 cm from the bottom. The suction nozzles of the airlift are located 10-15 cm from the bottom, and the pump itself is placed at a third of the height of the chamber.

Corrugated spiral hoses 32 mm are excellent as transfer channels, they can be easily laid without sharp turns. The connection with airlifts is sealed with screw clamps or nylon ties.

1 - inlet pipe; 2 - membrane diffuser (aerator); 3 - concrete pouring; 4 - airlift pumping into the water; 5 - compressor; 6 - cement-sand backfill; 7 - caissons; 8 - airlift pumping sludge; 9 - outlet pipe

Airlifts can be made by hand. To do this, take a segment PVC pipes 32 mm 15-20 cm long, two 15 mm holes are drilled in it in the middle and fittings for a 12 mm hose with a 1/2 thread are screwed into them. The connection turns out to be quite tight, if desired, it can be treated with hot melt adhesive. and connect them with a tee.

From the compressor, air is supplied to membrane diffusers located 40 cm from the bottom of the first and 25-30 cm from the bottom of the second chamber. To power airlifts, tee bends are made, air is passed through flow regulators. Airlifts for pumping sludge are additionally equipped with cranes or electrovalves for automatic control.

Completion of installation and start-up

At the highest points of each container, usually in the lids, it is necessary to install exhaust ducts to remove ventilation gases. After that, the septic tank is filled with water and its operation is tested in a “clean” mode: the air supply to the airlifts is regulated and the pumping speed is checked. If the operating mode suits you, the septic tank can be started.

Septic tank from eurocubes. In the houses and cottages located in the countryside, a wonderful holiday takes place. But without a comfortable and convenient septic tank, this is almost impossible. After all, the sewerage system plays undoubtedly important role especially in large families with small children. After all, it is the children who constantly need to wash their hands, face and constant hygiene products.

Most manufacturers offer the implementation and installation of a septic tank, but the prices for these services are sky-high and many cannot afford it. From this article you will learn about installing a septic tank from eurocubes on your own.

eurocubes- These are plastic (polyethylene) containers with a wooden or metal pallet designed to store or move liquids. The eurocube itself is placed in a special metal case, protecting it from damage. Weight is about 67 kilograms.

The maximum containing volume of liquids is 1000 liters. A septic tank is a design for cleaning, it consists of two eurocubes, the same in size. Pipes are placed in them to remove air (ventilation), nozzles at the inlet for liquid to enter the septic tank and at the outlet.

On the branch pipe at the exit from the pipe is installed check valve, so that the liquid after cleaning could not penetrate back into the septic tank. For more effective work both septic tanks are rigidly fastened by slightly shifting them vertically.

How to build a septic tank with your own hands

Features of a homemade septic tank

Self-installation of a septic tank from eurocubes is one of the most economical options. But at correct installation such a septic tank, it will very effectively cope with its duties. But it is worth taking into account that before self-installation of such a septic tank, it is necessary to familiarize yourself with all its features and nuances, and that its installation will require huge efforts and costs.

It is almost impossible to install it by one person, so you should take assistants for this. This is due to the fact that it will be necessary to dig a lot of land for the foundation pit in which the Eurocube will be placed. It is very large despite its relatively light weight.

Remember that the installation of a septic tank will be successful only if the installation rules are followed. Otherwise, after a maximum of a year, it is washed out under the influence of many factors.

At the stage of drafting the project, do not forget that additional cleaning will be needed, since Eurocubes for a septic tank are not capable of 100% purifying water. A third container and filtration will need enough space.

Septic tank design

Pipes are laid at a depth of no more than three meters, but not less than the level of freezing of the earth. Since the septic tank itself is not able to purify the liquid by 100%, the next step is to choose additional filtering method:

• filter well,
• filter field,
• filtering embankment (barrows).

At the next stage, we will make a septic tank from the eurocube. But it must be supplemented with pipes, tees and other materials. Due to its composition, it is able to withstand compounds with many toxic chemicals and create absolutely no reaction. Having passed this stage of installation, it is necessary to carefully close the drain points on all eurocubes so that the liquid cannot enter the ground.

Rules for connecting pipes to a septic tank 20 cm below the top of the tank. Next, cut holes for a pair of tees, insert them. After that, the holes are carefully closed and covered with a waterproofing material. Pipes are best used plastic, as they have a longer service life.

We connect a pipe upward for cleaning and an inlet pipe to one tee, while a connecting pipe and an additional ventilation pipe are connected to the other tee.

Installation and installation

After completing all the previous stages, you can make a septic tank from Eurocubes. The type of soil plays a huge role in this. For example, in clay soil, it should be carefully tamped, a sand and gravel cushion should be made, and a cement screed should be made upstairs so that the soil probably does not “float”.

The next step is to lower the eurocube into the dug pit, it is also desirable to fix it well. Next, we connect the pipes to the inlet and outlet of the septic tank. All this is recommended to be insulated with foam or other heat-insulating material. We fill everything with sand and fill the container with water.

If the groundwater level is high enough, then it is necessary to arrange additional protection for the septic tank. Reinforcement is installed in the space between the pit and the cube and concrete is poured there, if you follow all the rules and are very careful, the walls will not change their shape.

Whether or not to cover the top of the excavation with concrete depends on the location and the subgrade. If suddenly the pipes protrude above the surface, it is necessary to organize protection for them so that no debris gets inside the tank.

Further operation

A homemade septic tank must be thoroughly inspected periodically if you want it to serve you for a very long time. Built-in, larger pipes will help you with this. On the surface of the waste in the septic tank, there may be some elements that do not decompose, they should be removed. The frequency of cleaning the septic tank depends on how often you use the sewer system.

Every autumn you need to inspect whether there are remnants of solid masses at the bottom. If there are any, it is recommended to call a special service or pump it out with a pump. In the spring, you should check the condition of the septic tank, if there are any breakdowns or malfunctions, you need to fix them. In no case do not run the sewer system in case of malfunctions, this can lead to waste getting into the ground cover, this can be dangerous.

Advantages

One of the most important advantages is the ability to function without being connected to electricity. Most often, this factor affects the choice of a septic tank from European cubes.

Just as sure important quality is the possibility of installing additional blocks, this will help increase the volume sewer system. It is for this that early stages mounts install additional pipes.

In general, eurocubes are able to serve you for a very long time, but if the frame of the septic tank is destroyed, the plastic container of the eurocube can be destroyed due to corrosion.

Flaws

Please note that, on self-assembly a septic tank will take you far more than one day. But if everything is done correctly, this system will delight you for more than one year. The cons are:

• complex installation,
• fragility,
• Requires constant monitoring

The longest amount of time is digging the pit. This is a very hard physical activity. It is also not worth saving on the material for the septic tank, because if you choose good products, it can last for decades.

With independent sewerage, life in the country or in your own home will not be intimidating by the lack of basic amenities. If there is no extra money to purchase a ready-made sewer, you can build a septic tank from European cubes with your own hands. It does not require any special investment. Agree, this is a solid plus.

The information provided to you is based on personal experience independent builders of their own sewerage facilities from euro containers. Requirements taken into account normative documentation. In order to facilitate the perception of information, attached step by step photos and helpful video tutorials.

The arrangement of the sewer system using eurocubes among summer residents is considered one of the most economical options.

Moreover, a properly manufactured and well-installed septic tank is able to effectively cope with the functions assigned to it.

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It remains only to rigidly connect all the containers to each other by welding metal rods to the frame. It is important that the structure does not fall apart, otherwise all the pipes connecting the compartments to each other will break

Step #2 - installation and installation

When all work on installing pipes and sealing joints is completed, you can proceed to next step- installation.

The type of soil matters here - with clayey, moving soils, it is important to compact the bottom as efficiently as possible by constructing a pillow of sand and gravel. A concrete screed should be made on top of it, so that the bottom is probably not deformed under the weight of the filled flasks.

To be taken into account when filling concrete screed that the pit should have a stepped bottom, because each subsequent container is shifted 20 cm below the previous one

Then you have to lower the septic tank into the pit. It is advisable to anchor it in order to additionally fix it in place and protect it from ascent. Now you have to connect the incoming and outgoing pipelines to the septic equipment.

Pipes are laid with a slope towards the septic tank of 2 cm per 1 m of length. Moreover, the outgoing pipe with the purified liquid is laid at an angle to the filtration field. The section of the pipeline laid above the depth of soil freezing in the region, it is desirable to insulate

The walls of the septic tank and the pipeline will need to be insulated. To do this, you can take foam or other material. It remains to fill the cleaning equipment, assembled with your own hands, with water and fill everything with sand.

Between the walls of the pit and the septic tank, as well as on top, it is necessary to carefully lay the foam or other insulation

With a high level of groundwater, the walls of the Eurocubes will have to be additionally protected by pouring concrete. To do this, reinforcement or boards are placed in the gap between the tank and the wall of the pit and the concrete is carefully distributed. If everything is done consistently, not forgetting to fill the septic tank with water, then the walls will not deform.

To prevent extrusion by heaving soils and damage to the hull, backfilling of the walls can only be done with sand, carefully tamping

Concreting the top of the pit or not depends on the area. Pipes protruding above the surface must be protected so that nothing superfluous gets into the septic tank through them.

To perform ground treatment of wastewater that has been treated in a septic tank, one of the following structures is required:

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