To arrange autonomous sewerage country house or cottages, it is not necessary to buy an expensive biological treatment station. For these purposes, you can use an equally effective inexpensive septic tank. At the same time, you can buy a budget factory-made model or make such a structure yourself. In our article you will find a description of the most popular budget models of septic tanks, as well as recommendations on how and what to use to make your own inexpensive treatment plant for your dacha or home.
For a comfortable stay in country house or at your dacha you simply need to install a sewer system, because everything from cooking to personal hygiene requires the use of water. But wastewater needs to be disposed of somewhere if there are no centralized sewerage networks nearby. A septic tank effectively copes with the task of processing wastewater. After treating wastewater in this facility, it can be safely discharged into the ground without fear of environmental pollution.
If you don’t know what kind of septic tank to make at your dacha, pay attention to budget factory-made models. However, even when choosing a cheap septic tank, it is worth considering it technical specifications. This is the only way your treatment facility will cope with its functions and meet all the requirements for it.
When choosing a factory septic tank, pay attention to the following parameters:
- Septic tank performance. This parameter indicates the volume of wastewater that the structure can process per day. For a small dacha or country house, a treatment plant with a working volume of 200-300 liters is sufficient. Such structures can serve a house with 2-3 living people.
- When deciding which septic tank to choose, pay attention to what the product is made of. The design must be strong and durable. The housing must be sealed, moisture-resistant and resistant to household chemicals. It is best to choose a septic tank for your home made of high-quality plastic. It's inexpensive and durable material. However, the strength indicator is influenced by the design of the product and the wall thickness.
- Also, for the sewage system of a country house, it is important that the treatment plant can withstand the required maximum burst discharge. Typically this figure is 3-5 cubic meters.
- When deciding which factory septic tank to choose, consider the ease of maintenance and operation. Energy-dependent installations are more expensive to operate and maintain, but also more efficient.
- The efficiency of the treatment plant depends on the number of compartments and the operating principle of the installation. How better stock will be cleaned in a septic tank, the less costs you will have for the construction of filtration fields or drainage wells.
Review of inexpensive models
To make it easier for you to make a choice in favor of one or another installation, we have compiled a review of the most popular inexpensive models treatment facilities factory made:
- The most popular are budget cleaning products DSK. In addition to its low cost, this product has many other advantages. These include the simplicity of the design solution, which facilitates maintenance, the possibility of installation on a surface, energy independence and good performance. Such a septic tank for the sewage system of a dacha or country house can be selected depending on the volume of wastewater, since the product is available in several modifications. Approximate price products 290 USD
- No less popular autonomous septic tank Topas. This installation can be safely used to process domestic wastewater from a dacha or house of any size. The price of the product depends on the modification and is 700-800 USD. The main advantages of this product are the high strength of the body, which guarantees long-term use, a deep degree of wastewater purification, reaching 98%, complete environmental friendliness and harmlessness of wastewater. In addition, there is no unpleasant odor from such a unit, since it uses aerobic bacteria to process organic waste. However, these microorganisms need constant access to oxygen, so the installation is equipped with a compressor and an aerator. This equipment requires electricity, so the Topas septic tank is an energy-dependent model of a treatment plant. However, these are the cheapest septic tanks among deep biological treatment stations. The main advantage of septic tanks with aerobic filtration is the low frequency of sludge pumping (about once a year).
- To effectively clean wastewater from the sewer system of a country house or cottage, you can use the Tank treatment facility. In addition to the reasonable price, this product has many other advantages: the unit operates completely autonomously, which makes operation and maintenance easier, it is a strong and durable product. It is equally important that to install such a treatment plant, there is no need to concrete the bottom of the pit and fix it to the fittings outlets. Among the wide model range septic tank Tank you can easily choose a unit for your home. The price of this product depends on the performance and technical parameters and can range from 250 to 700 USD. Separately for the Tank septic tank you can purchase an infiltrator at a price of 350 USD.
If you want to buy the cheapest septic tank for country house, then you should pay attention to mini-format wastewater treatment plant models:
- The Unilos model is compact, which saves space on the site, durable and reasonable price, which is equal to 550 USD.
- The cheapest septic tank can rightfully be called the Triton mini model. Its price is only 85 USD. In this case, you can choose a compact product with a vertical or horizontal layout.
- Bars mini septic tanks are designed for different conditions use depending on modification. Among them you can find both small products for servicing a small cottage with 1-2 residents, and more productive units for a house with 4-5 residents. The price of such a treatment plant is 110-150 USD.
- The most the best option can become a mini Tank septic tank, which is equipped with an infiltrator necessary for any mini-format model. Moreover, the price of such a product complete with equipment is only 210 USD. With a productivity of 400 l/day. the maximum salvo discharge is 5 cubic meters.
- The Tver unit can also be considered an acceptable and inexpensive model of a septic tank for suburban sewerage. Its only drawback is the complexity of installation. However, no problems will arise during operation and maintenance. The price of such a product is 550 USD.
- The Topol treatment plant combines high efficiency and reasonable price. This is a fairly low-maintenance and easy-to-use product that can be purchased for 650 USD.
Homemade designs
Of course, the most inexpensive treatment facility can be made with your own hands. A septic tank can be easily built from Eurocubes (sealed plastic containers), old car tires or bricks. We will briefly describe the manufacturing process of the three most inexpensive homemade septic tanks.
Brick septic tank
It is better to make such a treatment facility from clinker bricks. We carry out installation work in the following sequence:
- We dig a pit of any shape with an area of no more than 2.7 m², since the useful volume must be at least 8 cubic meters.
- We tamp the bottom, make a gravel bed, and lay reinforcement mesh. At the bottom we make a concrete layer 30 cm high.
- Once the concrete has hardened, brick walls can be built.
- Now we are doing external waterproofing of the walls. To do this, we use bitumen or penetrating mastics.
- We plaster the walls inside and coat them with bitumen or waterproofing in two layers.
- We install a concrete slab floor.
- We install it in the ceiling ventilation pipe. It should be 50 cm above the ground.
- We seal the entry point of the sewer pipe into the septic tank.
- We install a hatch in the ceiling.
- External filling is done using clay.
Tire septic tank
- We dig a pit and make a filtration layer of crushed stone and sand at the bottom.
- Then we install the tires connected to each other. We tie them together through the pierced holes.
- In the side surface of the tire well you need to make a hole for the sewer pipe to enter.
- Cover the structure with a lid on top.
- We backfill the pit.
Treatment facility made from Eurocubes
- After digging a pit for two cubes, its bottom is concreted and reinforced. In this case, it is necessary to leave reinforcement outlets for fixing the cubes.
- The structure of the cubes is placed in a steel frame, which in turn is tied to the reinforcement outlets in the bottom.
- A hole is cut in the first cube for the entrance sewer pipe and a hole for overflow. In the second cube there is an entrance under the overflow pipe and an exit for discharging treated wastewater to the filtration fields. Both cubes are connected by an overflow pipe.
- A ventilation pipe is installed in the first chamber.
- To insulate such a septic tank we use expanded clay or slag.
- Backfilling of the pit is carried out with sand and concrete after filling the cubes with water. The backfill is compacted every 20-30 cm.
Can't connect to the central sewer? You can solve the problem locally - install a septic tank. To make this task easier, we have prepared a review of 9 reliable septic tank manufacturers. There is a good chance that other companies you come across are either copying or counterfeiting these 9 products.
We warn you! Hereinafter, by septic tanks we mean any engineering structures designed for collecting or processing wastewater, unless otherwise indicated. These include VOCs and SBOs – local treatment facilities and biological treatment plants, respectively.
Instructions for selection and installation of VOCs
Purpose of the article: talk about the most reliable companies that have been producing septic tanks and biological treatment plants for household wastewater for more than 10 years. Simplify the selection of the appropriate equipment model based on the needs of the buyer, soil conditions on the site and the purchase budget.
Types of septic tanks
Before we talk about sewage treatment plants, let's do a little education. Conventionally, all treatment facilities can be divided into 3 groups:
- storage tanks. It doesn’t matter what they are made of, their function is the same – to accumulate waste until the sewer truck arrives. Relatively cheap, easy to install, and do not require maintenance as such. Use is limited by the useful volume of the container, hence the need to use water economically and rely on the services of vacuum cleaners. It's inconvenient and expensive. They are used only when soil and other conditions do not allow the installation of structures from the following two groups;
- settling tanks. Multi-section tanks that do not require an electrical connection for settling wastewater and its anaerobic treatment. Microbiological purification processes proceed slowly in an oxygen-depleted environment. The outlet water has a characteristic odor and is purified to a maximum of 60%, so it must be further purified. For this purpose, fields or filtration wells are used: wastewater seeps through the soil layer, after which it does not pose a threat to the environment. Sedimentation tanks are simply designed and affordable, but require maintenance. They need to be periodically cleaned of accumulated sediment, and the filtration field needs to be redone every 5 years. This solution is not suitable for high groundwater levels (GWL) and soil with poor permeability, for example, clay;
- aeration stations. The most advanced systems for preparing household goods. drains. Through the process of settling, aeration and the use of microorganisms, the wastewater is purified by more than 90%, has no odor, and can be discharged into roadside ditches. However, such stations require connection to the power grid, and their efficiency suffers during power outages. Plus, they are expensive and require qualified maintenance.
We've sorted out the types of treatment facilities. It remains to take 5 steps to choose the one that suits your operating conditions.
| Step 1. Select your accommodation option | |
|---|---|
| seasonal (at the dacha) Terms of Use:
|
Ideal for:
|
| permanent (in a private house) Terms of Use:
|
Ideal for:
|
| Step 2. Select the type of soil on the site | |
| clay Initial conditions:
|
Ideal for:
|
| sand, sandy loam, loam Initial conditions:
|
Ideal for:
|
| peat Initial conditions:
|
Ideal for:
|
| Step 3: Select Groundwater Depth | |
| above 1.5 Initial conditions:
|
Ideal for:
|
| below 1.5 Initial conditions:
|
Ideal for:
|
| Step 4. Select a model based on battery life | |
non-volatile
|
Ideal for:
|
volatile
|
Ideal for:
|
| Step 5. Select the number of permanent residents | |
up to 5
|
Ideal for:
|
up to 10
|
Ideal for:
|
up to 20
|
Ideal for:
|
We hope this table helped you choose suitable option septic tank All that remains is to decide on the manufacturer. The table below contains 9 companies and their brief characteristics. All the manufacturers we reviewed offer solutions for both seasonal and permanent residence.
| Manufacturers of all types of septic tanks | ||
|---|---|---|
| , all types of septic tanks Bars |
Ideal for: residents of the above cities, because Bars is a practical and economical option for waste disposal. You can choose the most suitable model for the specific operating conditions of the septic tank. |
Middle price segment:
|
| , models Topas, TopBio, TopAero |
Ideal for: permanently residing in a private house, provided there are no interruptions in the power supply. |
Middle price segment:
|
| , models Kedr, Unilos Astra, etc. |
Ideal for: VOC devices in a house with permanent residence. |
Middle price segment:
|
| , models Microbe, Tank, Biotank |
Ideal for: budget purchase for the dacha, which is facilitated by frequent manufacturer discounts and the simplicity of the design of most models. |
Budget price segment:
|
| , Termite and Ergobox models |
Ideal for: residents of the cities indicated above due to free shipping. For those who are looking for an alternative to Tank structures. |
Budget price segment:
|
| , Eurolos models |
Ideal for: those who need simple models of septic tanks for their summer cottages at a low price. |
Budget price segment:
|
| Manufacturers of non-volatile septic tanks | ||
| , Rostock models |
Ideal for: devices for inexpensive autonomous sewerage in the country. |
Budget price segment:
|
| Manufacturers of local treatment facilities | ||
| , models Eurobion, Yubas |
Ideal for: permanent residence, when the maximum degree of wastewater treatment is required, even with significant volley discharges. |
Premium price segment:
|
| , models Tver |
Ideal for: large areas for permanent residence, because hatches provide free access to all parts of the installation and take up a lot of space. |
Middle price segment:
|
1. “Aqua Hold” – septic tanks Bars
at a price of 54,900 rub.
2. “Topol-ECO” – Topas treatment facilities
at a price of 89,900 rub.
Topol-ECO is engaged in the development and production of autonomous aeration-type treatment plants. The company was founded in 2002, the plant is located in the Moscow region, Lobnya.
The manufacturer's catalog includes both individual treatment facilities for private homes, as well as complex and specialized solutions for a group of houses, towns and enterprises. There are also other plastic products: cellars, decorative stones, contact tanks, galvanic baths, etc.
The company produces VOCs, which comprise 3 large groups:
- For private houses. Topbio - non-volatile septic tanks for installation in sandy soils. Topas and Topas-S are stations with two or one compressor, respectively. Topaero - treatment facilities with protection against increased volley discharge of wastewater.
- For enterprises and towns. Topglobal is a complex of equipment with reinforced concrete tanks for cleaning household household items. and industrial wastes. Topaero-M is a set of VOCs with increased total productivity for the treatment of domestic wastewater. Topaero-M/E is an analogue of the previous version for any type of waste.
- Specialized stations. Toplos-FL – for cleaning wastewater from organic matter. Cyclone is a system for post-treatment of household wastewater. Toplos-KM – container-type VOC for household use. drains. Toppolium is a fat separator from wastewater from public catering establishments. Toprein is a stormwater treatment plant.
The presented equipment covers a wide range of performance. The youngest models are designed for 4 people, the oldest – up to 200. The use of active forced aeration guarantees the purification of household waste by 98%. Therefore, the company positions its sewage treatment facilities as treatment facilities that do not require calling a sewer truck.
In most cases, polypropylene sheets with a thickness of 8 to 20 mm are used as the main material. The rigidity of the structure is achieved by using internal partitions and lattice structures as stiffeners.
| Model* | Topas 4 | Topbio | Topaero 3 |
|---|---|---|---|
| terms of Use | For permanent use by a family of up to 4 people on a plot with any ground level and type of soil. | For permanent or seasonal use by a family of 3-6 people on a site with sandy soil and low groundwater level. | Permanent use for large families and guests – up to 15 people in total. Any ground conditions. |
| Brief description | System with two compressors for wastewater aeration and deep biological treatment. Effluent can be disposed of in the ground or in a ditch. | A vertical 5-chamber non-volatile septic tank for which a filtration field is required. | Aeration system designed for volley discharge of wastewater up to 1 m3. Wastewater with up to 98% purification is odorless and can be disposed of in a ditch. |
| Material | Polypropylene 12.5 mm for external walls, internal partitions 8 mm thick. | ||
| Size, L×W×H, mm | 950×970×2500 | 1600×1200×3000 | 2400×1200×2500 |
| Electricity consumption, W/h | 42-63 | — | 208 |
| Weight, kg | 215 | 400 | 605 |
| Price, rub. | 89900 | 115900 | 218700 |
* you can select a modification with a built-in pump for forced pumping of treated wastewater. Models with higher productivity come with an extended neck for in-depth installation of the station when it is located far from home, as well as reinforced versions for difficult soils.
Conclusion: The main part of the products from Topol-Eco, which can be used in a private home or on a summer cottage, are energy-dependent biological treatment stations. They are made using the most advanced technology to date, which is why they are more expensive than conventional septic tanks with a filtration field. But you also need to take into account that such equipment requires qualified maintenance, does not tolerate long-term power outages and is designed for constant use.
3. “SBM-Group” – Unilos treatment facilities
at a price of 59,000 rub.
The SBM-Group company produces Unilos stations, storm sewer, KNS, plastic containers, fat separators. The plant has been operating since 2006 in the Moscow region, there is production in St. Petersburg, Novosibirsk, and a plant was opened in Kazakhstan in 2015.
Production technologies and range
The main emphasis is on autonomous sewage systems made of polypropylene, fiberglass and concrete. The stations are designed for cleaning household goods. and storm water. The productivity of septic tanks, depending on the chosen model, can range from 0.6 to 10,000 cubic meters per day.
Septic tanks are represented by three product lines:
- Biological treatment stations Unilos. This includes models of the Astra series and a modification with a service platform - Scarab, high-performance systems for villages - Mega, container-type kits for rotational camps - Container.
- Low-capacity septic tanks for summer cottages. The line includes aeration stations of the Uni-Sep series of hybrid type, a four-chamber non-volatile wastewater purifier Kedr and a three-chamber Unilos-OS.
- Storage containers. Containers made of polypropylene and reinforced fiberglass with pumping of wastewater using a sewer machine.
| Model | Unilos Astra 5* | Uni-Sep-1 | Cedar |
|---|---|---|---|
| terms of Use | For a family of up to 5 people on a plot with any ground conditions. | For permanent or seasonal residence of 5 people in conditions of periodic power outages. For any soil. | |
| Brief description | Vertical station for deep biological treatment of household goods. drains with gravity or forced drainage. Treated wastewater is discharged into a ditch or ground. | Horizontal VOC with 2 service hatches and 6 chambers for anaerobic and aerobic wastewater treatment. Discharge of purified water into a ditch or filter well. | Vertical non-volatile septic tank with 4 chambers for cleaning household wastewater. Mandatory installation of a filter field. |
| Material | Polypropylene. The side walls are 15 mm thick, the bottom is 20 mm thick. | Polypropylene 8 mm thick. | |
| Size, L×W×H or D×L, mm | 1030×1120×2000 | 1020×2000 | 1400×3000 |
| Electricity consumption, W/h | 60 | 71 | — |
| Weight, kg | 220 | 130 | 150 |
| Price, rub. | 89500 | 72000 | 62400 |
*this is standard equipment. There are Midi modifications with a built-in pumping station, a post-treatment and/or disinfection unit, as well as Long - with the same options, only of greater height.
Unilos Astra 5 is the most popular model among those who live in a private home all year round. The video below talks about the design of such a station and describes in detail the principle of its operation.
Conclusions: From the SBM-Group company under the Unilos brand you can choose the Astra aeration system, which is very similar in design to Topas from Topol-Eco. The choice among non-volatile septic tanks is limited to one model, but you can select a storage tank of the required volume. Those. The manufacturer is more focused on consumers who permanently live in their own home.
4. “Elite Stroy Invest” – Tank septic tanks
at a price of RUB 34,900.
The Elite Stroy Invest company (formerly Triton Plastic) specializes in the production of plastic septic tanks, water and fuel tanks, caissons, swimming pools and a variety of goods for the garden. The plant is located in the Moscow region, Mytishchi. Operating since 2007. Deliveries are possible throughout the country through the dealer network.
Production technologies and range
The catalog includes products for drainage devices of three types:
- storage containers. This includes containers made of Triton-N polyethylene with a volume of 1 to 3.5 m3;
- septic tanks And. This includes the Microbe model (3-12 people) - a 2-chamber model for a summer residence, as well as Triton-T (2-10 people), Tank and Tank Universal (1-25 people). These are 3-chamber tanks with the ability to increase the stages of wastewater treatment by adding additional blocks;
- bioremediation systems. Energy-dependent VOC Biotank (4-10 people) and Eurobion (4-150 people) made of HDPE and polypropylene, respectively.
The main material for the manufacture of containers is HDPE. The thickness of the material ranges from 10 to 15 mm depending on the model and location. For example, it is greater near stiffening ribs, and less on straight lines or areas of slight curvature.
The video below clearly demonstrates the production of HDPE Tank models. The plant is complete modern equipment, sheet plastic is supplied from Russian, Czech and German manufacturers.
| Model | Tank-2 | Microbe-450 | Biotank-3 itself* |
|---|---|---|---|
| terms of Use | For a family of 3-4 people with permanent or seasonal use. Works at low groundwater level, soil – sand, sandy loam, loam. | Model for seasonal use. Operation by 1-3 people in economy mode. For low groundwater level and filter soil. | Seasonal accommodation for up to 5 people. Low groundwater level, sandy or loamy soil. |
| Brief description | Cast horizontal 3-chamber settling tank with developed stiffening ribs. Can be equipped with an infiltrator** (analogue of a filtration field). Soil post-treatment of wastewater is required. | Compact vertical septic tank with 2 chambers. Provides minimal purification from heavy and light fractions. It is necessary to arrange a filtration field. You can additionally purchase an infiltrator. | Vertical 4-chamber septic tank with aeration section. Installed 1 compressor and simple automation. The degree of wastewater treatment is 95-98%; after the station, it can be discharged into a roadside ditch. |
| Material | HDPE 10-15 mm thick | HDPE 10 mm thick | |
| Size, L×W×H or D×L, mm | 1800×1200×1700 | 810×1430 | 1020×2120 |
| Electricity consumption, W/h | — | — | 60 |
| Weight, kg | 130 | 35 | 100 |
| Price, rub. | 50500 | 16500 | 42500 |
* This is a model with gravity drainage of treated wastewater. There is a modification with installed pump for forced withdrawal. There is also a model with a horizontal design.
** The infiltrator looks like it's upside down plastic bath, serves as the boundary of the filtration area of treated wastewater.
Conclusions: Although this manufacturer offers different types of models, it is known more for its sedimentation tanks. The Tank series line is ideal for dacha conditions and, in certain cases, can be used for permanent residence. During production, HDPE with a thickness of 10-15 mm is used, which is not always enough to ensure structural rigidity when installed in difficult soils.
5. “Multplast” – Termite septic tanks
at a price of 25,000 rubles.
The Multplast company specializes in the production of products made of polyethylene and fiberglass: septic tanks, caissons, wells, etc. This manufacturer is known for its Termite and Ergobox product lines. The plant has been operating since 2004 and is located in the Vologda region, Cherepovets. The company has its own warehouses in Moscow, St. Petersburg, and also in the Krasnodar region. They deliver throughout the Russian Federation thanks to a developed dealer network.
Production technologies and range
The equipment is represented by 2 main product lines:
- settling tanks. Produced under the Termite brand. Includes several modifications: Pro – 2- and 3-chamber septic tanks for dachas with low groundwater level; Transformer - the same as Pro, but with one neck (more rigid design); Transformer PR is a modification with a pump for forced pumping of treated wastewater at high groundwater levels. There are also storage models with a capacity of up to 5.5 cubic meters;
- biological treatment stations. Produced under the Ergobox brand. They are modifications of the Transformer (PR) models in which a compressor and aerators are installed.
All these products are made using rotational molding from Korean-made HDPE. The result is a durable, seamless structure with developed stiffening ribs. The wall thickness is 20 mm.
| Model | Termite Pro 3.0 | Ergobox 6 S* |
|---|---|---|
| terms of Use | For a family of up to 6 people at low ground level, when the soil is sand, sandy loam, loam. | For a family of up to 6 people with a low groundwater level, because the gravity version. The type of soil does not matter. |
| Brief description | 3-chamber horizontal settling tank for primary treatment under anaerobic conditions. It is necessary to install a filtration field for wastewater treatment. | 3-chamber VOC horizontal version with Japanese compressor and German pump. Discharge of treated wastewater into a ditch, onto the terrain, into the ground. |
| Material | HDPE 20 mm thick | |
| Size, L×W×H or D×L, mm | 2300×1155×1905 | 2000×1000×2100 |
| Electricity consumption, W/h | — | 63 |
| Weight, kg | 165 | 137 |
| Price, rub. | 52100 | 73700 |
* S – gravity flow. There is a PR modification with a pump for forced pumping out of treated wastewater. It costs 6 thousand rubles. more expensive than the gravity version.
Video demonstrating the installation process of a Termite septic tank. From a short video you will also learn about what diameter the supply pipe should be, whether it can have 90-degree turns, how and where to discharge the treated wastewater, etc.
Conclusions: It’s easy to notice the similarity of products from “Multplast” with products like Tank. All the same pronounced stiffening ribs and simple design. Of particular interest may be versions with a compressor - a simple modification gives the design special properties. However, it must be taken into account that a small number of chambers can lead to poor quality of wastewater treatment and, as a result, the need to construct a filtration field or well for additional treatment.
6. “Eurolos” – Eurolos cleaning systems
at a price of 26,000 rubles.
The Eurolos company is a relatively young company; the plant has been operating in the Moscow region since 2015. It gained considerable popularity thanks to the release of high-quality plastic products: wastewater treatment systems, caissons, grease traps. Deliveries from the manufacturer are carried out from a warehouse in Moscow, throughout the country - through a developed dealer network.
Production technologies and range
Cleaning equipment is represented by 2 lines:
- for individual use. This is Eurolos Udacha - a compact septic tank for seasonal use in the country; Eurolos Eco – 3-chamber settling tank; Eurolos Bio – VOC with pump and ejector; Eurolos Pro – aeration SBO. They are designed for a family from 3 to 20 people;
- for collective use. This is Eurolos Kontus - a modular system for wastewater treatment. Capacity from 20 to 4000 cubic meters per day.
All containers are made from polypropylene sheets 8-10 mm thick. In the Bio model, oxygen is supplied not by a compressor, but by a pump + ejector combination. How this works is clearly shown in the video below.
We also recommend watching full review of this treatment station, which explains the principle of operation of the system and the role of each of the nodes. We focus on the Bio model because it is the most popular among Eurolos buyers.
| Model | Luck | Eco 1 | Bio 5 |
|---|---|---|---|
| terms of Use | For a family of 2-3 people with seasonal living and economical use of water. The ground level is low, the soil is sandy loam or sand. | For a family of 5 people for permanent or seasonal use. Low GWL, good filtering capacity of the soil. | For 5 people for permanent or seasonal stay. Any ground conditions. |
| Brief description | Compact 2-chamber settling tank. Does not require digging a deep pit. A filter field must be installed. It is also recommended to use bacteria. | Horizontal 3-chamber settling tank with brush loading for breeding colonies of anaerobic bacteria. Arrangement required soil purification. | Vertical VOC of 3 chambers and a biofilter with wastewater circulation throughout the entire circuit. Aeration due to ejector and gushing. Does not require soil purification - wastewater can be discharged onto the terrain or into a ditch. |
| Material | Sheet polypropylene 8-10 mm thick | ||
| Size, L×W×H or D×L, mm | 1500×1500×800 | 1000×2000 | 1400×2000 |
| Electricity consumption, W/h | — | — | 88 |
| Weight, kg | 69 | 84 | 165 |
| Price, rub. | 26000 | 43000 | 71000 |
The kit does not include accompanying structures for arranging a treated wastewater discharge system. An infiltrator will cost an additional 5,600 rubles, a well - from 21,000 rubles, submersible drainage pumps– from 2900 rub.
Conclusions: In the range of the Eurolos company you will find solutions for the construction of a local treatment plant for seasonal and permanent residence of different capacities and the degree of preparation of wastewater for discharge into the external environment. It should be noted that the basic set of equipment is affordable, however, due to the small thickness of the tank walls, we do not recommend installing such systems in difficult soils where there is a possibility of the structure being compressed.
7. “Ekoprom” – septic tanks Rostock
at a price of RUB 26,800.
The Ecoprom company has been producing products from recycled polyethylene since 2008. The range includes containers for water, fuels and lubricants, septic tanks, grease traps, tanks for showers, etc. Today there are 3 factories in the Moscow and Leningrad regions.
Production technologies and range
2 product lines are designed for local sewerage installations:
- drives. Rostok U sealed containers with a volume from 1250 to 3000 liters.
- settling tanks. These are 2-chamber septic tanks Rostock Mini, Dachny, Zagorodny, Cottage. Volume from 1000 to 3000 liters - this is enough for use by a family of 2-6 people.
All containers are made from recycled materials, which determines their competitive cost. The tanks are made from HDPE using rotational molding. In this case, the wall thickness is 10-12 mm.
Watch a 2-minute video that clearly shows the structure of the Rostock Dachny septic tank and describes the role of each element of the treatment system.
| Model | Rostock Dachny | Rostock Countryside | Rostock Cottage |
|---|---|---|---|
| terms of Use | For 2-3 people. | For 4-5 people. | For 5-6 people. |
| Seasonal residence, low ground level, soil - sand, sandy loam. | |||
| Brief description | 2-chamber horizontal settling tank with developed stiffeners. A filter field must be installed. Volley discharge and the use of aggressive chemicals are unacceptable. | ||
| Material | HDPE 10-12 mm thick | ||
| Size, L×W×H or D×L, mm | 1680×1115×1840 | 2220×1305×2000 | 2360×1440×2085 |
| Electricity consumption, W/h | — | — | — |
| Weight, kg | 85 | 125 | 160 |
| Price, rub. | 33800 | 49800 | 58800 |
The price does not include an infiltrator for constructing a filtration field. This is about another 7,000 rubles. per piece.
Conclusion: Are you looking for the simplest sedimentation tanks for your dacha and their main quality for you is strength, tightness and affordable cost? Then you should consider purchasing a septic tank from Ecoprom. Especially if we are talking about a dacha, and the plot is located somewhere on the outskirts of the partnership. Because the quality of pre-cleaning, due to the presence of only two chambers, leaves much to be desired.
8. “NEP-center” – Eurobion cleaning systems
at a price of 84,000 rubles.
GC "NEP-Center" has been specializing in the production of local treatment facilities for low-rise buildings since 1998. The plant is located in the Moscow region, Kubinka. The company has a powerful scientific and technical base for developments in the field of wastewater and drinking water treatment. Delivery throughout the Russian Federation through the dealer network.
Production technologies and range
All systems are equipped with active aeration of wastewater and are classified into a general group - aeroseptics. Depending on the model, they can satisfy the needs of 4 to 100 people. According to the company's engineer-inventor, Yu.O. Bobylev, NEP-Center products are the result of the evolution of the VOC Topas line.
| Model | Eurobion-5 ART | Yubas 5 |
|---|---|---|
| terms of Use | VOC for constant use by a family of 5 people. Any ground conditions. | |
| Brief description | 4-section vertical installation with a large receiving chamber capable of withstanding a salvo discharge of up to 390 liters. It features economical energy consumption. Treated wastewater can be discharged onto the terrain. | Vertical station with deeper cleaning. Capable of receiving a salvo discharge of up to 700 liters. Consumes more electricity. It has a complex automation system, which complicates repairs. The wastewater after the system is discharged onto the terrain. |
| Material | Sheet polypropylene 10 mm thick | |
| Size, L×W×H or D×L, mm | 1080×1080×2380 | |
| Electricity consumption, W/h | 39 | 60 |
| Weight, kg | 125 | 270 |
| Price, rub. | 85000 | 138000 |
Station maintenance – important stage operation of the system. From the video below you will learn not only how to maintain VOC Eurobion 5, but also how the station is cleaned and what role is assigned to each of its components.
Conclusions: Treatment facilities from NEP-Center have a well-thought-out design in terms of the efficiency of wastewater treatment, but their maintenance requires highly qualified workers. Such systems are excellent for continuous use, but at the same time their cost is higher than their analogues.
9. Trade House "Engineering Equipment" - septic tanks Tver
at a price of 67,900 rub.
The company TD "Engineering Equipment" has been operating since 1992 and specializes in scientific research, production, construction and installation of equipment for wastewater treatment and pumping. The company's product range includes LOS Tver, storm water treatment facilities in Svir, grease traps, and wastewater treatment plants for car washes in the Northern regions. Production is carried out at 4 factories in the Russian Federation.
Production technologies and range
- for private houses. Biological treatment stations made of polypropylene of the Tver-P line are designed for 2-36 users, depending on the performance of the system;
- for residential complexes. Cleaning equipment in a metal or polymer housing with high capacity for 30-1500 people.
- for rotation camps. Container version Tver-S for 6-1000 people;
- in block-modular design. Modular designs Tver-BM with flexible adjustment of wastewater flow by varying the number of connected blocks;
- for solid waste landfills. Specialized Tver-MSW stations in container design for deep treatment of wastewater from solid waste landfills.
All models of Tver treatment systems are energy-dependent installations for seasonal or permanent residence. Polypropylene with a thickness of 5 mm is used as the material for the walls of the containers. The rigidity of the structure is ensured by stiffening ribs and internal partitions.
* There are 7 more modifications of this station, for example, the model with the PN index has a pump compartment with a submersible pump for forced submission treated wastewater.
The video below shows detailed information about installing a septic tank Tver-0.75 PN. A company representative at a real site explains the structure of the system and the role of each of its elements. Station maintenance is described in detail. If you are thinking about buying this model, be sure to check it out!
Conclusions: TD " Engineering equipment» do not offer a large selection of systems for country houses. The guys simply developed a model that works well and scaled it up. The result is not the most compact water purification station at an average price. The main thing is that it works, right?
Editor's Choice
All the presented manufacturers are good, but we especially want to highlight the following:
- "Aqua Hold". For septic tanks Leopard: a large selection of models of different types, the durable body of which is made of HDPE with a thickness of 25 mm. You can choose a treatment facility for any conditions. There are solutions for dachas, for permanent residence, for low and high groundwater levels, various types soil. Product prices are average for the market.
- "Elite Stroy Invest". For simple septic tanks Tank, which are ideal for a summer residence - durable, reliable, priced from 25,000 rubles.
- Trade house "Engineering equipment". For biological treatment stations Tver. Unlike most VOCs, it not only copes with the task of cleaning wastewater, but is also easy to maintain - no need to call a specialist. This is possible thanks to easy access to each station camera.
Frequently Asked Questions
Here we have collected answers to pressing questions about septic tanks.
What material is the best septic tank?
Factory products for individual use are made from polymer materials: polypropylene, polyethylene low pressure(HDPE), fiberglass. They are relatively light, do not corrode, are strong, sealed and durable - all these materials are good.
The only question is to what extent their capabilities are realized in a particular septic tank design. For example, there may be a polypropylene container in which the seams are welded poorly, so it will leak after some time.
The rigidity of the structure is influenced by the thickness of the material and the presence of structural elements: stiffeners and internal partitions. Therefore, if the design is unsuccessful or simply does not suit specific operating conditions, the septic tank can be flattened or torn apart by soil. But the point here is not in the quality of the material from which it is made, but in the design itself.
I can’t decide between a non-volatile septic tank and a biological treatment station with aerators. Which is better?
If for a summer residence, choose a non-volatile sump tank, provided that the groundwater level is below 1.5 meters, and the soil itself has good filtering abilities. For example, it is sand or sandy loam. Once a season you will have to do dirty work and remove accumulated sludge from the bottom of the tank, but in general this solution is the most economically feasible and convenient for seasonal living.
For private homes, it is better to buy a system that ensures maximum purity of wastewater leaving the treatment plant. You can’t do without a station with aerators. One of the advantages: the wastewater does not smell after it, it is cleaned so much that it can be poured into roadside ditches. However, this solution is more expensive, and automation and compressors require connection to the electrical network.
Summer cottage near the forest, seasonal accommodation, four people. Recommend a septic tank.
If you need something cheaper and simpler, then consider the Termite Pro 2.0 option. It is very similar to the well-known Tank, but costs only 39,000 rubles. The manufacturer also often has promotions - you can save several thousand.
The filtration field can be set up next to the forest. This is where you will dump wastewater for further treatment. This way you will cause minimal inconvenience to yourself and your neighbors.
At the dacha there is a well from which water is used for food purposes. Which septic tank to choose?
Obviously, a treatment station is required here, after which the wastewater can be discharged into a roadside ditch. If there is no ditch, it can be lowered into the ground, provided that the discharge point must be 50 m from the well.
If the soil does not accept water, then in some cases it makes sense to think about installing a storage tank and then calling the vacuum cleaners.
Will the drains freeze in winter? Is it necessary to insulate a septic tank?
If used constantly, they will definitely not freeze - a kind of bioreactor is constantly working inside, generating heat. In extreme cases, you can insulate it by pouring a layer of straw or leaves on top.
During seasonal use, it is recommended to fill the container 2/3 with drainage, with additional insulation on top. This way the container will not float up and be crushed by frozen soil. We recommend that you additionally read the instructions for the specific model; the manufacturer may have a different opinion on this matter.
What happens to a volatile water treatment plant if the power goes out?
Typically, such systems are very sensitive to power outages. The compressor pumping air stops working, and after 6 hours the amount of oxygen in the wastewater is significantly reduced. The struggle begins between aerobes and anaerobes. Effluent can begin to ferment due to anaerobes, so after turning on the electricity, normal operation occurs within several days.
Is there a strong smell from the septic tank?
After a regular sump there is a strong, characteristic smell of sewage. It can be felt even close to the filtration field, so they are installed in the most remote place.
After systems with aeration, the water is cleaner and does not smell. Unless the station's operating mode is disrupted: exceeding the permissible peak discharge, power outage, use of aggressive detergents.
Installed a septic tank with a filtration field without connecting to the power supply. How to service it?
Once every six months it is necessary to open the container and check the amount of sediment. If it is more than 1/5 of the height of the container, it will have to be removed. Use a bucket or fecal pump for this purpose.
Light fractions will accumulate on the surface of the wastewater. If they form a thick, hard layer more than 5 cm thick, it is also better to remove it in a timely manner, because subsequently it can significantly complicate cleaning the tank.
A septic tank is one of the elements of a local-level treatment facility, intended primarily for economic and domestic needs. It is not a complete treatment system, it is only one part of it.
First of all, with the problem of choice cheap septic tank residents of private and country houses that do not have access to a general sewer system face. In this case, the basic amenities in the house are simply necessary, but then the problem arises with the removal of wastewater and the development of treatment facilities. IN in this case the septic tank is the most affordable and simple option solutions to this problem.
However, despite the apparent simplicity of the issue, creating a local sewerage and water purification system quite difficult, first of all it concerns the total cost of the project. In addition to the septic tank itself, it is also necessary to lay a pipeline system in the house and use soil treatment methods and systems in accordance with established standards. The use of such systems is regulated established rules and regulations, for non-compliance with which fines may be imposed.
Now there are quite a lot of companies that offer various solutions to this problem. These projects involve 
usage various equipment and technologies that have been developed recently. These specialists really offer an effective way out of the current situation. However, the cost of such projects can be quite high. If it is not planned to use treatment facilities constantly or if the volumes of water consumption are not very high, then it makes no sense to overpay.
The solution in this case will be the use of other schemes, and cheap septic tanks become reasonable and the right choice. If you are not going to use strong chemicals, and also send various garbage into sinks and toilets, then there is no point in spending money on complex treatment facilities.
Basic requirements for septic tanks
Firstly, the size of the septic tank must correspond to the volume of wastewater discharged into it and the time spent in it. There are certain standards that determine the residence time of wastewater in a septic tank. A soil cleaning system should also be provided. Wastewater that has undergone primary treatment must be freely removed from the general septic tank.
However, all these are not strict rules, but general recommendations. Everyone can arrange a septic tank in the way that is convenient for them, provided that it does not interfere with anyone else and does not harm the environment. Naturally, wastewater should not be allowed to enter the street; in some cases, it can also affect the soil. Any septic tanks economy classes may be used as long as they do not violate these rules.
As a rule, such septic tanks are simple sewer wells designed to serve one home. In this case, simple units are used that work much more productively and efficiently than more expensive and complex systems.
The main difficulty lies not in the design of the septic tank itself, but in the laying pipeline system in the house. If such a system is created from scratch, then many aspects need to be taken into account, and all work is divided into several stages. First, water must be supplied to the house. After which you will need to lay pipes in the house and install the necessary plumbing equipment. The final stage is the installation of the septic tank itself.
If it is possible to regularly clean the septic tank, then there is no need to install complex treatment facilities and you can get by budget septic tank.
Many owners of country houses and country houses are faced with the need to dispose of wastewater. At the same time, it is not always possible to buy expensive equipment, and a cesspool is not in the best possible way solving the problem. In connection with this, making a homemade septic tank is the simplest and most affordable way out of the situation. A properly designed and manufactured septic tank will not produce an unpleasant odor and will do its job perfectly. In addition, unlike biological treatment systems, it does not require additional energy sources, and the cost of its production is an order of magnitude lower than the purchase and turnkey installation of ready-made solutions. For efficient operation of the septic tank...
A septic tank is usually called a hydraulic structure designed for preliminary mechanical purification of small volumes of household wastewater. In fact, these are miniature treatment plants intended for use in country houses, cottages, dachas - anywhere where there is no possibility of connecting to a centralized sewerage system. Most often - due to the complete absence of the latter. With a wastewater volume of up to 1 m3 per day, it is quite enough to use a single-chamber septic tank; with large volumes of wastewater, the power of such a “drain” may not be enough. What to make a simple septic tank from? The simplest septic tank is a container buried in the ground in which waste liquid accumulates and then goes into the soil. Use this...
The popularity of country houses in our country, in fact, as throughout the world, is very high, only in our country, in the vast majority of cases, they are, so to speak, of a practical nature - beds, a fish tank, flower beds. As a rule, the construction of a country house is economical in nature, hence the need for an inexpensive waste disposal system arising as a result of life activities, that is, an inexpensive but practical septic tank. On the other hand, even in a fairly large country house the same problem exists, only on a much larger scale. In this situation, the use of complex, volumetric settling tanks is required with frequent calls for so-called sewage disposal equipment....
A septic tank is an integral part of the communal system of any building in which people are located. Its arrangement is mandatory, since human waste cannot simply be buried without first purifying the mass. In cities, their arrangement and ensuring their uninterrupted operation falls on the shoulders of the authorities. In the case where there is no centralized sewerage system, you need to build them yourself. In this case, all legislative norms adopted by the state should be taken into account. Currently, many companies have appeared that produce and install septic tanks. But you can make a septic tank with your own hands - from concrete, brick, barrel. First of all, you should take into account that systems from a barrel are unlikely...
If you need to equip your own sewage system, then the first thing you should pay attention to is the average daily water consumption per person. It is approximately 250 liters. This volume includes water used for cooking, cleaning the house, washing and washing dishes, and necessary hygiene needs. And all of it will need to be taken away. The simplest place to collect all waste water will be a septic tank. But simplest does not mean simple. Of course, such a device is inferior to the central sewerage system and systems of local treatment facilities. In addition, going outside to the toilet has never been considered a particularly comfortable activity. But! If you need to install...
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A person prefers to feel comfortable everywhere, especially when relaxing in the country. But, if there is no sewage system in a country house, normal life is impossible. The Eurocommunications company offers you a dacha and install it on a turnkey basis on your site. Our employees will choose an adequate septic tank option for your dacha, deliver and install a turnkey septic tank in Moscow and the Moscow region.
The principle of operation of a country septic tank
A septic tank is a modern alternative to cesspools, but unlike the traditional solution, this equipment is environmentally friendly and does not emit unpleasant odors in the dacha area. According to the principle of operation of septic tanks for treating wastewater in a country house, there are:
- Storage septic tanks. These are sealed containers that only collect and accumulate wastewater. Finished products can have a volume of up to 10m3. A sewer truck is required for maintenance.
- Cleaning septic tanks. This species not only collects wastewater, but also purifies it. There are models that do not require pumping, that is, they do not need to be maintained. There are models of septic tanks for summer cottages to which you need to connect electricity.
Such devices provide high level water purification, equipment from some brands clarifies the liquid up to 98%, and it can be discharged directly into the environment. For example, here's how a septic tank with an aeration tank works:
- household wastewater enters the equipment and first passes mechanical cleaning from contamination of large fractions;
- in the settling tank, wastewater is separated by natural gravity;
- in the biological treatment module, microorganisms eliminate organic matter;
- Final cleaning is performed in the secondary settling tank and they are sent to the discharge point.
Choosing a septic tank for a summer residence and its turnkey installation
Even inexpensive septic tanks for a summer residence will cope with the tasks of collecting and treating wastewater; it is important to choose the equipment wisely. When the cost is not high, they can still be of high quality and productive, especially when the price for a septic tank is set by a direct manufacturer. The main features of choosing a septic tank for a summer residence will be:
- performance,
- salvo release volume,
- the need to connect to the electrical network,
- seasonality of use,
- septic tank dimensions.
It is important to decide on the type of autonomous sewer system. The storage option collects wastewater, which is then purified as it becomes dirty.
If residents permanently live at the dacha, you need a more powerful septic tank for the dacha: installing filtration units will resolve the issue of regular wastewater disposal.
More efficient, innovative systems are equipped with devices with high degree cleaning. They create a special environment to neutralize bacteria.
To install a turnkey septic tank at your dacha, professionals choose suitable place, then after digging the hole, it is processed and rings are installed.
Further strengthened interior walls well, then a hatch is placed.
Turnkey installation of a septic tank will be a complete concern for environment: wastewater and sewage undergo powerful purification and, when entering the soil, do not pollute it.
Reliable design and the use of high-quality components will allow you to achieve proper drainage of household liquids without harmful impurities.
Which septic tank is better to buy for a summer residence?
Which septic tank is better to buy for a dacha without pumping? After all, a septic tank is a kind of autonomous sewage system that not only does not pollute the soil and groundwater, but also processes biological waste. And in order for this mini treatment station to serve you as long as possible, you need to choose a good manufacturer. Listed below are models of septic tanks for summer cottages, which are particularly popular on the market today.
- – has high efficiency cleaning, high-quality aerator compressor and multi-stage cleaning;
- – the structure is quite effective due to the fact that it combines a biofilter and recirculation in the aerator, moreover, this septic tank is quite easy to install;
- – one of the smallest models, which has a two-chamber design and is ideal for placement in a small space;
- “- this structure is also considered as the best septic tank for a summer residence, because it has low energy consumption, a durable body and easy operation.
- - is an equally popular structure with a high degree of purification, good performance and durable capacity.
By choosing one of the above brands, you definitely won’t go wrong, but best prices for septic tanks for a summer residence in our store you will be pleasantly surprised.
It is inexpensive to purchase septic tanks for a turnkey dacha only from trusted companies that have more than a dozen successful projects in the capital and the Moscow region.
In our company you can buy the desired inexpensive septic tank model for your dacha from 12 manufacturers. Popular brands are also on sale country septic tanks Tank and Topas.
We work with septic tank manufacturers on a direct supply basis, so we guarantee prices for autonomous sewage systems without markups from resellers.
Our craftsmen are highly qualified and have extensive experience, so they perform their work well and conscientiously on the installation and installation of septic tanks in the country. You can place an order online on the website, by phone or in our office in Moscow on Podolsky Cadets Street.
At the dacha you cannot do without sewerage. After all, the water needs to be dumped somewhere. The same goes for a free-standing bathhouse. There are many designs and kits for baths available. But for some reason, nowhere does it say: “Where does the drain water go?” If you want to set up a septic tank for a non-residential dacha or a bathhouse as simply and cheaply as possible, then do it yourself, using materials... that no one needs.
If the amount of wastewater is not at all large (less than 0.7 cubic meters per day) and water is discharged only occasionally (no one lives permanently), then the standards allow us to equip a small septic tank for wastewater with bottom filtration. But before we talk about the design, you need to choose a suitable place for the septic tank.
Septic tank location and pipeline
Water from a bathhouse or other drain should be drained by gravity. Without installing an additional pump. Right? Then the drain pipeline should have a slope of 2 centimeters per meter. If the length of the pipes is 10 meters, then the pipeline in the septic tank will be lowered by 20 centimeters compared to the exit point.
If the sewerage system will be used in winter, the pipeline will have to be buried below the freezing level. And this value is significant, even in average regions 1.3 - 1.5 meters. But the pipeline can be placed higher, but at the same time be properly insulated. Then rare flows of warm water will not create a continuous ice jam, unless of course the pipes are cast iron... Insulation can be made from a “skin” of polystyrene foam (sold) or a 10 cm layer of glass wool wrapped in roofing material. Then the pipe can be placed at a depth of 0.4 - 0.6 meters.
Regular outer diameter drain pipe– 110 mm. Such plastic pipes for sewerage can be purchased without problems. But if solid fractions are not expected in the drain, for example, if the drain comes only from the bathhouse, then you can get by with smaller standard diameters - 50 mm or 40 mm.
Now about the location of the septic tank on the site. There are a number of guidelines that limit liberties in this matter. The septic tank should be located at a distance of 5 meters from the house, and 1 meter from another building with a foundation. From the road - 5 meters. From the well - 50 meters, and from the water supply - 10 meters. But the most important limitation is the groundwater level. There should not be less than 1 meter from the bottom of the septic tank to the aquifer. This is for an open bottom. But completely sealed septic tanks should not be located directly in the water. Therefore, you need to find out how deep the groundwater lies, and only then choose one or another treatment system.
But most likely there will be a place on your summer cottage that meets the above requirements. Then you can start building a septic tank.
Design
Since a septic tank is needed only for periodic drainage, there is no need for a large volume of it. And if so, then the shell of the septic tank can serve as old car tires. They don't have large diameter, and by burying the tires to a depth of 2.5 meters, you can get a decent tank for “one-time” use. And there is no need to dig deeper, since the sewage disposal truck does not go deeper than 3 meters.
Where can I get old tires? Contact a tire shop. There are workshops that are willing to pay for the removal of this stuff. But a septic tank made from passenger cars will be minimal in size. If you go to the Auto Garage, you can get hold of “trucks.” Do you want a large septic tank?, since there are a lot of drains, then look for tractor ones, perhaps by agriculture, possibly at car factories.
Installation of a budget option
When the trench for the pipeline has been dug, you can begin digging a pit for the septic tank. The contour is marked 5 - 10 cm larger than the tires. But such a pit will turn out to be too narrow to make it deep. It will be too inconvenient to work. Therefore, starting from a certain depth, it will either have to be expanded or dug from the surface. To dig from the surface, you will need to acquire a pair of very long tools - a “chisel” and a “scoop”. The first one can be the usual bayonet shovel on a 2.5 meter handle. And the second is a shovel, but bent at 75 degrees. Then it will be possible for her to collect soil and deliver it “to the mountain.”
Having dug a well more than 2.5 meters deep, you need to equip its bottom using a gravel filter. It is in it that invisible helpers - bacteria - will work most actively, decomposing wastewater into simple and harmless components. The filter thickness is 50 cm. First, 20 cm of sand is poured, then 30 cm of crushed stone.
Now you can put the tires in the pit. But first it is recommended to cut off their lower side. Then water will not linger inside. This can be done easily with a regular jigsaw or saw. And in the tire into which the drain pipeline will be inserted, a hole will have to be cut across the metal cord, so you will need a metal file and wire cutters. 
The tires are laid out so that they rise above the surface. This will prevent rainwater from flowing into the hole. It is also recommended to install a roofing felt seal into the gap between the tires and the walls of the pit. This prevents flooding from melted water and sediment.
After that, all that remains is to fill the soil back around the tires, and use the remaining part to make a bead around the rising tire. It is better to plant this mound with shallow lawn grass, then the septic tank will turn out simply charming.
But the septic tank must be covered with a solid lid, just in case... If you work hard, you can also adapt a cover with a hatch by screwing it with self-tapping screws directly to the top tire.
The overall result of all the work will be the cheapest but most efficient septic tank design possible. And may it last for many years...
