Reinforced concrete rings are widely used in sewerage installations. Durable and durable products are relatively inexpensive and make it possible to build local septic tanks (single-section ones are called cesspools) and inspection wells at minimal cost. The easiest way to install a sewerage system is with concrete rings.
They are relatively easy to install, operate without much difficulty and protect the septic tank well from precipitation or freezing. Learn how to make a sewer system from concrete rings in this article.
The inspection well is assembled quickly. A crane is used to move the rings. During installation work, reinforced concrete rings are firmly fastened together with a “lock” connection. The design turns out to be very reliable, and the influence of soil mobility on it is reduced to a minimum level.
The amount of groundwater depends on whether it is necessary to waterproof concrete sewer rings from the inside. It is made as a layer of polyethylene.
For installation work, 2-4 people and a rented excavator are enough. If you equip your country sewer system with concrete rings, you don’t have to worry about the possible leakage of drains into groundwater.
Industrially produced covers for septic tanks with holes greatly simplify installation. And thanks to the grooved connection of the sewer rings to each other, subsequent sealing of the structure becomes easier.
As a rule, in suburban housing construction, concrete sewer rings with a diameter of 1 m are used.
You should not take too large ones - because of them, groundwater may enter the ring or the soil may dry out. And the latter will eliminate the need to install a sewer system. The concrete ring serves as a conductor for the sewerage system unit and the wastewater sump, cesspool.
How to properly make a sewer system from concrete rings?
To install a concrete ring as a septic tank, you need to dig a pit and compact it thoroughly. Thanks to the dense compaction, there will be no need for additional work associated with digging if the ring gets stuck in the hole.
Despite the advantages of these products, you should also remember their disadvantages: reinforced concrete rings are quite heavy. Additional costs are required to deliver and install them.
The large weight of the rings makes it likely that cracks will appear in them under uneven load on the product. But the advantages of reinforced concrete rings are still much greater than the disadvantages. It's no surprise that they are leaders in the construction market.
Main technical characteristics
Many types of construction work cannot be done without reinforced concrete rings. Sewerage for a private house made of concrete rings is widely popular. These durable products are made from concrete and rebar designed for long-term use.
With minimal construction skills, you can make a sewer system from concrete rings with your own hands, but if you are not confident in your own abilities, turn to professionals.
For a reasonable fee, they will quickly and efficiently install the necessary products. In addition, they will help you choose a design suitable for your site and purpose.
Installation of concrete rings for sewerage and operation
The popularity of concrete rings in the presence of plastic analogues on sale is easily explained. Precast concrete products have many advantages, which include affordable cost and the ability to carry out preventive maintenance along with a long period of operation. 
Reinforced concrete rings for sewerage are durable and can be used for up to 5 years.
The products are resistant to low winter temperatures. Possessing high-quality insulation, they are not affected by alkalis, water and acids.
Concrete rings are used as a septic tank for sewerage, the implementation of which is possible in several modifications:
When deciding to build a septic tank and thinking about how to install concrete rings for sewerage on a site, you need to understand: such work requires certain knowledge and skills.
But awareness of the options for implementing a septic tank simplifies the process of creating it. By choosing the right reinforced concrete rings, you can create a sewer system that works as efficiently as possible.
Do-it-yourself installation of concrete rings for sewerage - step by step
Before you begin arranging a receiving sewer for wastewater, you should prepare for installation work. The septic tank is calculated by volume, which is influenced by the number of people living in the house and the volume of drains.
In accordance with the project, it is necessary to purchase ring elements of the required diameter and configuration, purchase and deliver sand, crushed stone, cement, bitumen and liquid glass to the site.
If the system is planned to be constructed using a mechanized method - using special equipment, you need to agree in advance to rent a crane. To ensure smooth entry of vehicles into the site, access roads must be prepared in advance.
Sewerage from concrete rings is installed in stages. The most difficult thing is to carry out excavation work. To equip a septic tank, you need to follow several steps:
Increasingly, instead of the usual cesspool, sewerage is made in the form of a septic tank - a well or a system of wells in which wastewater is consistently fermented, purified and filtered. This modification of the sewer system relieves the home owner from the need to use sewerage services. Installation of a septic tank costs approximately 30,000-35,000 rubles.
Design calculation
Although the prices for sewer concrete rings are through and with a bottom at an acceptable level, you need to select reinforced concrete products with a suitable diameter so as not to overpay for the rings and make the installation process easier.
The volumes of the most popular models KS 10-9, KS 15-9 are 0.23 and 0.40 m3, respectively.
The volume of the septic tank is calculated as the product of the number of residents in the house, the daily rate of individual water consumption (150-200 l) and the number of days during which the well is filled with water (usually 3 days).
Another calculation option is to multiply the total daily volume of water consumption in the house by a factor in the range of 2.5-3.
Prices for concrete rings for sewerage
Where can I buy concrete rings for sewerage that are cheaper and certainly of high quality?
If you need concrete rings, the price of which is the most affordable, order reinforced concrete products with turnkey installation of sewerage from concrete rings from the specialists of our company.
We have high quality concrete rings, the price level for products is not higher than the average for Moscow and the region. For creating suburban septic tanks, products of the KS 10-9 (weigh 610 kg) and KS 15-9 (weigh 1000 kg) brands are optimal.
The cost of concrete rings for sewerage is from 1,700 rubles/piece. for products KS 10-9 and from 2700 rub./piece. for products KS 15-9.
From us you can purchase at affordable prices the most popular reinforced concrete rings for sewers or well shafts, as well as a variety of components - floor slabs, well bottoms, inspection hatches.
A sewerage system made from concrete rings is one of the most popular among those that can be made on the site with your own hands. However, in order for it to work with maximum efficiency, it is important not to make mistakes at the main stages:
- determining the required volume,
- choice of design,
- choice of installation location,
- installation of sewer system and communications.
Sewerage for a private house made of concrete rings has undeniable advantages:
- durability of the structure,
- mechanical strength and rigidity,
- relatively low cost of material,
- resistance of concrete to corrosion processes under the influence of moisture and chemically active substances,
- quick assembly.
When choosing, you should take into account the disadvantages:
- Concrete has good hygroscopicity, therefore tank walls need waterproofing. Otherwise, untreated water will partially seep into the ground.
- Due to the large mass of the rings For installation it is necessary to use special equipment, which will require additional costs.
Installation and its nuances
The characteristics of the material are directly related to some installation nuances that are characteristic of all types of sewage systems in this category, regardless of the chosen design.
Read what characteristics they have in a separate article. There is information about their types, sizes and prices.
You can talk about vacuum pumps for sewage. The types and main characteristics of the units are described.
Operating principle of various designs
Depending on the conditions in which the sewerage system made from concrete rings is used, a scheme that is optimally suitable for them is selected.
- Single chamber models often chosen for a summer cottage or country house with seasonal residence. They require periodic cleaning using a sewer machine.
- Frequency of pumping out two-chamber structures noticeably less. Such options are often considered universal. With the correct choice of volume and proper installation, they provide a fairly high degree of cleaning, while such models require less space on the site than three-chamber ones; it is easier for them to find a place that meets all sanitary requirements.
- Three-chamber Country sewerage made from concrete rings is also suitable for private houses with permanent residence, as well as for country houses where, in addition to a washbasin and toilet, there is a shower, a full bath, and a washing machine. A system of this type is capable of providing high quality cleaning for mixed (organic substances and chemical components, including detergents) contaminants. Among septic tanks with three chambers, a distinction is made between energy-dependent ones (the wastewater in them is purified due to the activity of aerobic bacteria) and energy-independent ones. The former are characterized by a shorter processing cycle and efficiency, the latter by the absence of operating costs.
Calculation of sewerage volume and standard sizes of rings
The total volume of the treatment plant depends on the average daily water consumption of all residents of the house. This, in turn, can be calculated by points of consumption (shower, washbasin, etc.), but it is much easier to use the accepted value - 200 liters per day for each person.
The water purification cycle lasts approximately three days, during which the waste must be collected in the sewer system. Thus, for a family of three people the required volume is calculated as follows:
3 (persons) x 200 (liters) x 3 (days) = 1800 liters (or 1.8 cubic meters).
- When choosing a single-chamber model, the entire volume falls on a single container.
- In a two-chamber design, the storage tank makes up 3/4 of the total volume, and 1/4 is in the second chamber.
- In a three-chamber septic tank, the storage tank makes up 2/3 of the volume, and 1/3 falls on the second and third chambers in total (most often they have the same dimensions).
Many homeowners use only one size ring for all sewer tanks.
During installation, three concrete rings are usually installed on top of each other. A smaller quantity is impractical due to insufficient capacity; a larger quantity may reduce the reliability of the design.
Since standard concrete rings have the same height - 900 mm, the volume is determined by their diameter. Many enterprises offer the production of concrete products with any parameters to order, however, such rings will cost more and increase the total cost of the structure. It is permissible to use rings with an internal diameter from 700 to 2000 mm for constructing tanks, however, in most cases, preference is given to the two most common standard sizes: KTs-10 (KS-10) and KTs-20 (KS-20). The numbers in the marking indicate the size of the internal diameter in decimeters.
Elements of a sewerage scheme
A septic tank or sewage treatment plant is the main element of the structure, but this is not the only sewerage system made of concrete rings - the scheme also includes other elements that should be discussed separately.
The sewer pipes supplying wastewater to the storage tank must have a slope of 2 cm per meter if the liquid is transported by gravity, without the use of a pump.
SNiP strictly regulates the installation of inspection wells along the entire length of the pipeline:
- at the junction of lines,
- when changing parameters (slope of communications or their diameter),
- when turning the pipeline.
For straight-line communications, the distance between inspection wells is determined by the diameter of the pipeline:
- up to 150 mm – 35 meters,
- 200 mm – 50 meters.
In summer cottages, sewerage is installed not too far from the house, so the number of wells is rarely more than 1-2.
For energy-dependent modifications, a ventilation pipe is required, as well as one, which is better to choose with the ability to regulate performance and with a timer.
In a dacha sewer system made of concrete rings, a bottom filter is not suitable for effective drainage of purified water in all cases. Dense soils (clayey and loam) do not have good water permeability, which reduces the drainage rate. As an auxiliary device, perforated pipes can be used, which come out of the lower part of the chamber with purified water (second or third, depending on the design), have plugs at the ends and are located parallel to the surface of the earth at a shallow depth. Such devices increase the drainage area.
In case of very high clay content in the soil, it is preferable to have a sump pump that will transport purified water to a drainage ditch or watering tank. In the second case, the water quality requires testing in a laboratory.
Another option for arranging sewerage on the site is. You can find out how to do it in another article.
For those who are planning to build an outdoor toilet, our article may be of interest. This option is environmentally friendly and simple.
We told you how to run a water supply from a well.
Septic tank placement
It may seem that to ensure the slope of the sewer pipeline it is easier to install concrete rings for sewerage in a lowland, however, in this case, rain and melt water will enter the tank, overflowing it.
Reservoirs must be installed no closer than 5 meters from a residential building, and also maintain a distance to sources of drinking water (30-50 meters) and 30 meters to open bodies of water.
Installation of concrete rings for sewerage video
How to make a sewer system from concrete rings is demonstrated in the video.
It is best to start building a country house with the installation of a sewer system. Agree, correctly designing and organizing wastewater drainage on a site is not an easy task. We will have to think carefully about solving this problem. After all, improper installation of sewerage threatens to make life in the house unbearable.
We will tell you how to create a functional septic tank on your site yourself. Thus, among the affordable materials used in the construction of local treatment facilities, the most popular today are concrete rings.
We will talk about how to build septic tanks from rings with your own hands, and what to consider during the installation process. In addition, in the article you will find videos with advice from experienced specialists, detailed instructions for installing a septic tank, as well as many useful recommendations about installing a sewer system in a country house.
Concrete rings, which serve as the basis for the construction of the walls of the structure, have high performance parameters.
Thanks to their technical advantages, tanks constructed from them are durable and have excellent resistance to aggressive environments.
Septic tanks made of concrete rings, designed for the collection and subsequent biological treatment of wastewater, are an ideal option for well-drained soils that are not prone to frost heaving
The arrangement of such systems requires large square areas. But under given conditions, sometimes this is the only system that works.
Image gallery
Polypropylene pipes are famous for their strength and elasticity; their operating temperature is about 65°C
The diameter of asbestos-cement or polymer pipes used for overflow should be 110-120 mm.
Step #3 – digging a pit and arranging the bottom
It is better to carry out excavation work after the onset of the first frost or in the hottest months. During this period, the lowest groundwater level is observed.
The pit can be dug manually, by hiring a team of “diggers”, or by using the services of an excavator. If we take into account the costs of carrying out excavation work, then the costs of a team of diggers will be comparable to the amounts that will be spent on calling out special equipment.
The dimensions of the finished pit should exceed the dimensions of the installed rings by 50-80 cm. This will simplify the installation process and allow for external waterproofing of the joints of the structure.
When calculating the pit depth, three values are summed up: the height of the monolithic or filtration bed (20-30 cm) + the height of the rings (indicated in the table) + the height of the slab (15 cm).
It is better to immediately remove a large amount of soil removed from the pit from the site, using the same machine that delivered the rings
The pit for installing the treatment plant should be two-tiered: its second tank should be buried 50 cm lower than the first. Alternatively, dig your own hole for each tank.
To connect sewer pipes, trenches are dug, laying them below the freezing depth of the soil. The width and depth of the trenches are selected based on the dimensions of the rings used for the construction of the tanks. Most often they are made 50 cm wide with a depth of 1.2-1.5 m.
The reliability of treatment facilities is the key to the comfort of country property owners. Concrete rings for sewerage are characterized by an increased degree of strength and durability. Compared to the brick lining of a pit for a wastewater treatment plant, the structures are easy to install. A local septic tank will be the solution when it is not possible to equip a central sewerage system in private households. Concrete products are usually located inside communication systems.
Advantages of country sewerage
Connected water supply and the presence of a septic tank are the primary factors for comfortable living. Having your own suburban area, you need to think through the communications system. A country sewer system is being installed for a private house using concrete rings. It has a number of advantages:
- long service life;
- differ in rigidity and mechanical strength;
- have a low cost;
- are resistant to corrosion, moisture and aggressive chemicals;
- easy to assemble and install.
Keep in mind that home drainage consists of several elements that are attached taking into account the slope of the site, the level of soil freezing and its composition.
Subtleties of purchasing material
When choosing a material for arranging wastewater communications, several points must be taken into account:
- reinforced concrete is characterized by high hygroscopicity. The surface of the tanks must be waterproofed;
- The concrete ring is heavy. Installation requires additional special equipment;
- low-quality material can easily crumble. Therefore, when choosing material for sewerage, it is better to choose trusted manufacturers.
All the disadvantages of sewer rings are easily corrected in the process of stage-by-stage arrangement. How to properly design and build drainage is the main question for owners of dachas and country houses. 
Sewerage: device, diagram, design
The design of a local septic tank may include wells for sewage from reinforced concrete rings in an amount of no more than 3 pieces, forming one unified system. For the construction of wastewater tanks, rings with a diameter of 700 – 2000 mm are used. Common standard sizes are KTs-20 (KS-20) and KTs-10 (KS-10). The numbers in the marking indicate the diameter in decimeters.
When choosing a design for wastewater treatment facilities, you need to take into account a number of technological factors:
- the volume of daily water consumption of a particular facility;
- terrain surface;
- availability of groundwater;
- degree of soil freezing;
- access for trucks.
A sewerage system made of concrete rings requires the presence of the following elements:
- a concrete storage well for sewerage - all wastewater from the house flows into it;
- a secondary settling tank, which acts as a light wastewater purifier;
- containers for filtration - purified water passes through it and returns to the soil.
The construction of autonomous treatment facilities is carried out using standard reinforced concrete rings: the height is 900 mm, the volume is determined by the diameter of the product. Some manufacturers offer perforated concrete products to order. However, such a product is more expensive. 
Optimal septic tank sizes
When calculating the effective and working volume of sewerage in a private house made of concrete rings, it is necessary to proceed from:
- three times the amount of water discharged per day. As a rule, there are about 200 liters per person.
- To determine the optimal volume of the septic tank, taking into account everyone living in the house, you need to multiply the indicator by 3 and by the number of users of the drainage system.
The dimensions of concrete rings for sewerage play an important role. In the single-chamber version, the entire volume of water is contained in one container. The two-chamber design takes on ¾ of the total volume in the storage tank, and ¼ goes to the second chamber. A three-chamber septic tank will distribute the entire volume of wastewater equally across all storage tanks. 
How does a septic tank system work?
A durable concrete well, designed for the quality of sewerage, ensures consistent movement of wastewater:
- water with contaminants enters the first container and is divided into elements of different densities. Heavy fractions remain at the bottom, and light fractions rise to the surface;
- the purified liquid is fed into the second tank, where the organic matter is broken down;
- the third container without a bottom discharges purified water into the ground. The liquid is pre-filtered in a drainage well.
Three-level filtration eliminates soil contamination. 
Types of septic tanks and their design features
When arranging a septic tank made of concrete rings, the design of each type of structure has its own nuances.
Local structure with one chamber
At the heart of a single-chamber septic tank, in a country house made of concrete rings, there is one container, which plays the role of a sewage storage tank. Its optimal volume is 16-20 times the daily water discharge. The design allows for the absence of a bottom and drainage.
Two-chamber system
The cleaning system has good functionality. The two-chamber structure for a summer cottage made of concrete rings is based on two storage tanks. The structure of the well allows the accumulation of heavy fractions in the first chamber, and the secondary one is intended for the accumulation of settled wastewater. By constructing a system that uses drainage based on sand and gravel, it is possible to obtain high-quality drainage of water into the soil. 
Three-chamber septic tank
The basis of the three-chamber system is made up of three containers. This building is a perfect waste disposal device. The first two wells act as sedimentation basins for sewage, the last one performs the final filtration of wastewater.
The third sewer pit has to be dug deep, right down to the occurrence of sand and clay, which will facilitate the removal of moisture.
What materials might be needed?
Do-it-yourself sewerage from concrete rings is made using the following materials and tools:
- shovel;
- shovels with sides;
- buckets;
- handles with cross handles;
- products for loosening soil;
- cement grade M200 - M500;
- sifted fine sand;
- crushed stone with medium fractions;
- concrete products with a diameter of 10 cm;
- corners, asbestos pipes and tees;
- hacksaws;
- waterproofing material.
Using a shovel with sides, the earth is scooped up, and the depth of the pit is formed with a shovel and bucket. A layer of crushed stone is poured onto the bottom of the trench to strengthen the structure. The bottom is installed on a crushed stone cushion. 
Installation of a stock structure: nuances of work
The drainage system has its own design features. Regardless of the type of structure and the chosen material, the installation process has its own specifics.
Choosing a suitable location
Before you make a sewer system according to safety precautions at your dacha with your own hands, you need to familiarize yourself with the standard layout of local structures.
- The septic tank must be located at least 7 meters from the house.
- The concrete sewer well is located far from the drinking tank - 30 - 60 meters.
- We make a drainage pit as far as possible from the paths and road, from the neighbor’s fence, over 3 meters.
- We plan fruit plantings, a vegetable garden and a garden at a distance from the sewerage system in a private house. The standard figure is over 3 meters.
It is necessary to build a septic tank away from a source of drinking water or a reservoir. The optimal distance is 10-20 meters. 
Preparing a pit and installing a septic tank
When performing excavation work, you can dig the soil manually or use special equipment. To dig a storage tank, the excavated pit must be 20-30 cm larger. This makes it easy to install sewer rings.
Installation of concrete rings must be carried out exclusively vertically. When working with material, moving by rolling is unacceptable. This leads to cracks on the surface of the products.
- The bottom of the pit must be level. A reinforced mesh of 20x20 cm is made and laid out on the base.
- It is necessary to concrete the base of the structure.
- After the concrete has hardened, you need to install a tank. The container is assembled from reinforced concrete products, putting them on top of each other.
- In the process of assembling sewer rings, you need to mark and create holes using a hammer drill through which pipes will be fed.
- Upon completion of the installation of the sewer rings - installation of the well in the pit and placement of the drain pipe, we proceed to insulating the septic tank.
- The space between the walls of the pit and the concrete products is eliminated by filling it with sand and cement.
To calculate how many rings need to be installed for one drive, we proceed from the parameters of the calculated volumes for users. 
Organization of the filter system
To ensure uniform contact of water with the walls of the product, the first ring is installed on a crushed stone cushion. The top of the structure is also covered with drainage. The quality of drainage is achieved by bricks placed under the walls of rings for home sewage. You can make several holes in the walls of the elements. Sewer pipes must be led into a well.
Waterproofing of the structure
The construction of a septic tank for a country house should be approached carefully. Properly organized sewage system at the dacha ensures the normal operation of the structure.
Waterproofing the internal and external surfaces ensures optimal retention and sedimentation of wastewater. Particular attention should be paid to the joints between the rings. For this purpose, bitumen mastic, liquid glass solution, and polymer compositions “Gidroizol” or “Gidrotex” are used. 
Sewer ventilation
Creating a ventilation system is a key point in the construction of treatment channels. The work pursues several goals:
- preventing the spread of unpleasant odors from pipelines and well containers;
- protect against air discharge;
- maintain optimal performance of the structure.
The ventilation construction technology involves connecting a waste pipe to a ventilation riser located on the roof of the building. The ventilation channel and the sewage compartment must have the same diameter. A suitable value is considered to be a pipe cross-section of 110 mm. 
Uninterrupted functionality of the septic tank will be possible if the owners take into account several points:
- seal sewer pipes;
- make the incoming part of the system thicker than the outgoing part;
- install check valves in the pipeline to prevent backflow;
- pour some crushed stone into the bottom of the well;
- Be sure to clean the sewer walls 2-3 times a year.
An installed autonomous septic tank for private property is an opportunity to set up a treatment facility and solve the problem of draining contaminated wastewater. When constructing a structure, you must adhere to the specified sequence of work. After all, a well-built system will ensure comfortable living in private homes for a long time.
A good-quality septic tank made of concrete rings allows you to organize wastewater treatment up to 70%, but the percentage of treatment in it is lower than in high-tech biological stations (98%). Although such a system is several times cheaper, and its design is simpler. Why not use it to install a sewer system in your country house, right?
Do you want to build a septic tank on your own and don’t know where to start? We will help you understand in detail all the intricacies of this issue. The article examines in detail the structure of a concrete storage tank and detailed diagrams of its construction. As well as a step-by-step installation process, starting with the preparation of materials and ending with putting the system into operation.
The article is supplemented with visual photos and videos, which examine the nuances of the functioning of a septic tank and the process of constructing a two-chamber treatment plant.
Concrete rings are a good material for making sewer systems in private households. If the territory does not belong to environmental protection zones, then you can save on sewerage, since the cost of such a septic tank is half the price of purchasing a treatment station.
Before starting work, it is necessary to determine the type of soil on the site. The choice of filtration system depends on its characteristics, since the design of a septic tank made of concrete rings involves several containers. According to sanitary standards, water must be allowed to settle for three days or more before being discharged into the ground.
The type of soil can be determined by digging a hole, interviewing neighbors who own a well or well, or requesting information from an organization conducting construction or drilling near the site.
Image gallery
The number of rings can be determined by dividing the volume of the container by the volume of the ring. Their sizes come in small, medium and large.
For the calculation, the parameters of an average size ring will be used. KS-10-9 whose internal diameter is 1 m and height is 90. One ring has a volume of 700 cubic liters
For a family of two:
Volume of the first container = (200*2)*3= 1,200 liters.
Volume of the second and third containers = 1,200/3 = 400 liters.
Number of rings for two containers = (1200+400)/700= 4
Number of rings for three containers = (1200+400+400)/700= 5
Bottom line: 2 rings for the sump, 2 for the sedimentation tank and one for the drainage well.
For a family of three:
Volume of the first container = (200*3)*3= 1,800 liters.
Volume of the second and third containers = 1,800/3 = 600 liters.
Number of rings for two containers =(1,800+600)/700=4
Number of rings for three containers =(1 800+1200)/700= 6
Result: 2 rings for the sump, 2 for the sedimentation tank and two for the drainage well.
Septic system diagrams
Septic tank designs made from concrete rings assume the presence of one, two or three chambers where wastewater settles and is biologically processed.
All chambers are arranged with a monolithic bottom, cleaning is carried out by settling. The settled liquid is discharged into an infiltrator or filtration field for subsequent disposal into the ground.
Depending on the absorption capacity of the soil, you can choose several filtration options for constructing a septic tank made of concrete rings:
- Septic system with .
- Septic system with absorption well.
- Septic system with filter cassette (infiltrator).
The most common filtration option is a drainage well. It is used when the soil has good absorption properties.
For ease of movement, running brackets are mounted inside the container. They are necessary for servicing the septic tank in case of blockages or depressurization.
The adjacent sedimentation tank is installed in the same manner. In both containers you need to make holes for sewer pipes and install them. The inlet for sewage should be located higher than the overflow pipe between the containers.
On top of the floors you need to install one small diameter concrete ring. This creates a small chamber that will isolate the container from cold air.
This completes the installation of a septic tank made of concrete rings, and the installation of a ventilation system follows.
Step #4 – installation of the ventilation system
Ventilation is necessary to allow air to enter the system, which ensures the normal functioning of microorganisms. They process household wastewater and remove the organic component. To ensure constant air circulation, two ventilation pipes are required.