Pipe infiltrator. Infiltrators for septic tanks: effect and quality of work

Infiltration devices are designed for the purpose of thorough post-treatment of wastewater, functioning together with the sewer system. Often this is the only profitable option for private estates where it is not possible to arrange an extensive filtering zone. The appearance of the device is associated with a bottomless container. The system is installed at a distance of more than two meters from the septic tank, and the service life is designed for half a century.

Purpose

Photo: infiltrator diagram

Serves as a device for water purification and output to the ground. The design is made in such a way that the wastewater exits to a shallow depth of soil. The advantages of the system:

  1. The combination of relatively low weight with great strength.
  2. Work is carried out in all types of soil.
  3. One infiltrator replaces eight hundred kilograms of crushed stone.
  4. The volume is designed for wastewater emissions above the norm.
  5. It is similar to 36 meters of drainage pipe.
  6. Working with the device is simple, and installation will not cause difficulties due to its simplicity.
  7. Does not allow the area to become swampy.
  8. Profitability.
  9. When constructing engineering sewer networks, the amount of work with the soil is reduced.

Conventional water treatment is only 75%. The infiltrating device solves this problem by achieving 98% filtration. It is recommended to use Uponor.

In what conditions should work be:

  • after water purification, they are in a special container inside the system;
  • the next step is to absorb moisture through a special crushed stone layer (for high-quality soil post-treatment of water);
  • during operation, the infiltrator is not needed in fully fill with water, and its volume is recommended to be taken such that the peak flow rate is exceeded by 25%.

How to choose the right infiltration system for septic tanks

To choose the right device, you need to adhere to the following points:

  • Operating parameters: the total volume needs more than three times the power. This is a mandatory condition that will insure against an instantaneous influx of wastewater and when working conditions change.
  • Soil quality. The rate of soil water absorption, which is taken into account when selecting infiltrators.
  • Volume and working area, in this case area.

How many of these elements are needed?


Photo: installation of infiltrators

The amount depends on the brand of equipment. For example, for one septic tank "Tank-1" you need two "Triton-400". And provided that the soil base is peat or sand, then one additional device can be dispensed with. Also, when choosing, you need to take into account the required power, soil and other available terrain features.

Installation in working position

The main task of the design is the secondary purification of the clarified sewer liquid from the soil. Someone will say that other aeration fields will do, but no. In the first case, much less space is needed than in the second, so installing other types is not economically viable.

Principle of operation:

  • The clarified water moves through the pipeline into a special container.
  • Due to the fact that the structure is ventilated, nitrification occurs - the removal of living microorganisms and their separation.
  • Additional purification is performed when the wastewater moves through the lower filter system.
  • After overfilling the main tank, the liquid moves through pipes to other additional containers.

The main conclusion is that the clarified liquid after the septic tank undergoes post-treatment and there are no harmful microelements in it.

How to do the installation yourself

The main advantage of the system is that the infiltrator can be installed after the septic tank. However, sellers advise mounting at the same time as VOCs.

If you do not yet have a septic tank, then the place of the device is selected before work. The recommended installation distance should be at least 5 meters from the building and more than 30 meters from wells, water intakes, and so on (Rules and norms of SNiP and SanPiN for arranging septic tanks in areas). Next, we do the work with our own hands, which are divided into several stages:

Pit development

The main criterion at this stage of work is the level of soil water. You need to dig to such a depth that the system is above the average level of their rise.

The size of the pit should be made larger by about half a meter from the installation. This is explained by the fact that at the bottom there will be an infiltration cushion, the area of ​​\u200b\u200bwhich must be larger than the system.

Filtration layer device


Photo: the principle of operation of the filter pad of the septic tank Tank

Natural filter - the joint work of crushed stone and sand. Here it is just applied. The crushed stone fraction is medium, the sand is fine. The bottom of the pit is covered with geotextile. This solution allows you to maintain the integrity of the filtration pad, and prevent the ingress of microorganisms. They can remain in the wastewater, bypassing the septic tank along the side surface of the soil.

The next step is to fill the filter pad. She will qualitatively deal with the post-treatment of water before it penetrates into the lower soil layer. The thickness depends on hygroscopicity - the speed of passage of soil water. The final step is leveling the fill.

Do-it-yourself system installation

Thanks very much light weight installation can be carried out independently without the involvement of additional equipment.
It is very important that the housing, which is already on the soil pad, is at the level of the system. After that, you can do the inlet and outlet pipes, as well as the air exchange pipe.
Further, after checking the tightness of the system, the excavation is backfilled with soil. Distinctive feature device is that it does not need to be additionally fixed due to the depth of soil backfill equal to 1 meter, which reliably protects the elements of the system.

There have been cases of do-it-yourself joint installation of an infiltrator and a well.


Photo: joint installation of an infiltrator and a well

From the bottom of the drainage cushion, special plastic pipes with holes are installed - drains. They are connected to the well, taking into account the angle of inclination.

After undergoing wastewater treatment, it is not sent to the lower soil layer, but goes to a special barrel, where it is pumped out by a drainage pump.


Photo: name of system elements and device

This scheme is excellent for compacted clay soils. Without such an installation, the quality of wastewater absorption will be much worse than the incoming mass from the septic tank. Such a solution can lead to flooding of the infiltrator and the reverse flow of liquid into the VOC.

Having done all the procedures with your own hands, the operation of the structure begins. Care of the post-treatment system is also done by hand. The condition of the pipes and the degree of clogging are checked.

Everyone is already aware of the advantage of using infiltrators, as many people care about environment and worry about its safety. The design is light (about 10-20 kilograms), the dimensions are relatively small, the cost is not beyond the bounds of decency. In addition, it is fully (98% instead of 70%) engaged in wastewater treatment. Ease of installation saves the buyer's financial resources. Throughout the entire period of operation, human intervention is minimized, which gives only positive emotions.

Septic tank infiltrator

Organization "Triton-Plastic" is a well-known supplier of anaerobic septic tanks Tan and Triton. With its own production line for the production of plastic products, it has become a pioneer in the production of infiltrators in the domestic market as an addition to septic tanks.

Characteristics of the infiltrating system "Triton":

  • Dimensions 1800 - length, 800 width, 400 height.
  • Wall 10 mm.
  • Capacity - 400 liters.
  • Weight excluding pipes - 15 kilograms.

The price depends on the brand of the manufacturer: Triton - 5.5 thousand rubles, Aquamaster - 4 thousand rubles, Graf - 5 thousand rubles.

If a non-volatile septic tank is installed on the site, then the question always arises about the organization of post-treatment of wastewater. After all, the maximum purity of waste after passing through the system will be from 60-75%. In this case, there are three options: organizing filtration fields, installing an infiltrator or mounting a biological filter. We will talk in more detail about the first two options for soil post-treatment in our article.

An infiltrator is a device that collects effluent from a septic tank and sends it for purification through a layer of crushed stone or expanded clay. On the modern market there are durable plastic models which have an affordable price. A non-volatile septic tank system and several infiltrators will cost much less than a deep water station. biological treatment. Also, add in the cost of energy and Maintenance. Therefore, the installation of additional soil post-treatment using infiltrators is quite practical.

Let's list the advantages of this device?

  1. The infiltrator for the septic tank is installed in series with the drain system, while it allows you to significantly save space on the site. One container replaces 36 meters of drainage pipe in the filtration field. This allows you to create a high-quality wastewater treatment system in a small area;
  2. The device makes it possible to carry out the final cleaning of the liquid from the septic tank up to 98%;
  3. Affordable price and simplicity of design make the system profitable (when compared with deep biological treatment septic tanks);
  4. The device is easy to mount, light weight;
  5. The tank system will replace the filtration field for the septic tank and significantly reduce the land work on the site;
  6. The infiltrator is suitable for all types of soils.

Installation of soil treatment systems

Consider the stages of land work that are necessary to organize a filtration field for a septic tank and an infiltrator.

The territory of soil cleaning should be impressive. Usually a system of 2-5 pipes is mounted, the length of which usually does not exceed 25 meters. The distance between the pipes is a distance of at least 1.5 meters, and the laying depth must exceed the level of soil freezing. A layer of rubble is laid at the bottom of the trench, a drainage collector will pass here. The pipe must be laid at a slope of 2 cm per meter to ensure adequate fluid flow rate. A layer of fine sand is poured over the drainage. Distribution channels that come out of the well are placed on top. They are also covered with rubble, geotextiles are laid on top of the ditches. The uppermost layer can be made from a finished lawn, it is permissible to fill the system with soil. The filtration field for a septic tank must have flue pipes that rise at least 50 cm above the ground. They are supplied with visors. The location of the soil purification zone is at least 5 meters from the house, at least 30 meters to open water intake sources for clay soils and 50 meters for sandy soils. There should be no bushes and trees in the filtration zone, the passage of cars is prohibited. Soil replacement in the fields is carried out every 5-10 years.

The system uses pipes with 110 mm perforation.

The infiltrator is placed in series with the septic tank. It is a plastic case that does not contain a bottom. Stiffening ribs protect it from deformation. The distance from the well to the infiltrator tank should be about 1 meter.

When choosing a device, the volume and number of containers are taken into account. The capacity of the infiltrator should be three times greater than the salvo discharge from the well. It is also important to take into account the absorbency of the soil (it is higher on sand).

At the stage earthworks the level of groundwater is taken into account. The depth of the pit must be above this level, otherwise your system will float in the spring and fall. For installation, a small trench is dug, 50 cm larger than the dimensions of the container. Next, we proceed to laying the filtration layer. We put geotextiles at the bottom, pour sand and crushed stone of the middle fraction. The thickness of the pillow is 40 cm.

An infiltrator is placed on top of the pillow. Its dimensions allow you to carry out this stage on your own, without the help of technology. Pipes are connected to the tank: the outlet from the well, the overflow for the second device (if any) and the gas outlet to the soil surface. After checking the tightness of the system, cover it with geotextile and fill it with soil.

So, the system with an infiltrator is easy to install and saves space on the site. In addition, it does not require land work to replace the filter layers of the soil.

Biofilters in action

You can clean up the liquid from the septic tank using a biofilter. It is a system of biological and mechanical treatment. The first layer is expanded clay, in the second cavity there are aerobic bacteria that complete the process of splitting organic matter. A biofilter for a septic tank is installed in the last chamber or mounted in a separate container. Maintenance requires regular bacteria colonization, oxygen supply, year-round sewerage operation. Without regular access to organics, the microorganisms in the filter will quickly die. A significant disadvantage of the devices is their high cost.

A do-it-yourself biofilter for a septic tank can be made without much effort. For this, an additional container is used, into which the drains will fall from the second chamber. It is filled with filtration porous material. Expanded clay can be used. Water passes through it and is mechanically cleaned. In addition, the capacity is populated by aerobic organisms. They decompose organic pollution, performing additional wastewater treatment.

An aeration unit is additionally supplied to the chamber, which will enrich the effluents with oxygen. For this, a compressor and a perforated pipe are used, which are located at the bottom of the tank.

The degree of purification of sewage waste by anaerobic septic tanks is usually 70-75%. According to current standards, this is not enough for the final discharge of water into the ground, a reservoir or use as industrial water.

In this case, there are 2 options: the construction of a storage well or the arrangement of infiltrators. Recently, preference has been given to installing an infiltrator, as it has a number of advantages.

The replacement of traditional with modern local treatment plants (VOCs) is due to their practicality. The design of septic tanks allows you to treat wastewater for quite a high level.

After that, the clarified liquid is discharged by gravity or forcibly through the outlet pipe. But it still contains a certain amount of harmful elements, undecomposed organic matter.

Infiltrators are installed to improve water purity.

Photo: infiltrator is a soil treatment device

An infiltrator is the general name for a soil treatment device that can be made from various materials, but have general principle work.

Structurally, a typical model is a container with an inlet pipe, an overflow pipe (with serial connection several blocks) and a ventilation pipe.

In order for wastewater to be directed only to the lower layers of the soil, the infiltrator has a sealed cover. In fact, it is the body of the device. For optimal post-treatment, a filter layer of sand and gravel is made under the structure.

Installation advantages:

  • their functions include complete post-treatment and disposal of waste masses - up to 98%;
  • affordable cost. Even the total price of an anaerobic septic tank and infiltrators will be significantly less than the cost of a deep biological treatment plant;
  • They operate on a "set it and forget it" principle. They do not need to be pumped out with a sewer, the walls are cleaned with the help of incoming clarified water.

However, along with this, for installation, it is required to allocate additional space in the adjacent area.

When choosing one or another model of infiltrator Special attention should be given to the design and material of its manufacture.

Due to the fact that during the operation of the structure it is almost impossible to visually control its condition, initially the structure must meet the following conditions:

  • mechanical strength of the case. In addition to the external pressure of the soil, it must withstand the loads when it is completely filled with sewage;
  • the material is not exposed to corrosive processes and is completely inert when exposed to biological and household chemicals.

Based on these conditions, many manufacturers have chosen polymer, cross-linked polyethylene, as the main material for manufacturing.


Photo: plastic infiltrators

Important! At the same time, stiffening ribs are provided in the design to maintain shape under the influence of internal and external pressure.

But before proceeding with the selection and installation, it is necessary to know the features of the infiltrator device and their operation scheme.

Device and circuit

As mentioned above, the main task of the infiltrator is to provide ground post-treatment of clarified sewer water. But why not install simpler aeration fields instead?

The main difference between the two systems is the required installation area. Due to the design of the infiltrator and the principle of its operation, much less space is required to organize soil cleaning.

Photo: filtration fields Photo: dimensions

Often equipped with such an additional cleaning system.


Photo: installed septic tank with biofilter

The work of the infiltrator consists of the following steps:

  • clarified liquid through the pipeline enters the tank;
  • due to the fact that the structure is ventilated (with the help of a pipe brought to the surface air enters it), the process of nitrification takes place in it - the oxidation of organic substances and their decomposition into components;
  • as it passes through the lower filtration layer, additional cleaning is performed - denitrification;
  • if the maximum burst discharge exceeds the volume of the infiltrator, then pre-install additional containers connected in series. As soon as the first of them in this chain is filled, then with the help of an overflow pipe, the excess enters the next one, and so on.

Thus, the clarified liquid from the septic tank, which has a maximum percentage of purification of about 70%, completely gets rid of harmful impurities, and organic compounds decompose during oxidative processes.

The main characteristic of the infiltrator is its volume and installation area. The maximum volley discharge and the rate of soaking of purified water into the soil will depend on these parameters.

To select a design according to the characteristics described above, it is also necessary to take into account the following data:

  • technical data of the septic tank. First of all, this refers to the volume of salvo discharge. In this case, the probability of exceeding it should be taken into account. Those. the actual capacity of all infiltrators in the post-treatment system should be at least 3 times greater than the performance of the septic tank;
  • soil parameters. Depending on the composition of the soil, the rate of penetration of moisture into the soil is different. For loam, it is much lower than for sandy. Therefore, it is recommended to make a preliminary calculation of this characteristic.

After the optimal model has been selected, you can proceed with the installation.

DIY installation

The advantage of the infiltrator is also the possibility of its installation after the installation of the septic tank. But manufacturers recommend doing it simultaneously with the installation of VOCs.

Before starting work, a place is selected where it will be installed (if it is not already standing) and a land plot is planned for the installation of infiltrators.


Photo: a place to install a septic tank

Important! Despite the fact that the water will go into the ground purified, it is recommended to install it at a distance of at least 5 m from the house and 30 from open water intake places - a well, a pond, etc.

After that, you can start installation work. They are carried out in several stages.

Digging a pit

The main parameter will be its depth. It directly depends on - the infiltrator must be installed above the average annual horizon of their rise.


Photo: pit for mounting the infiltrator

The overall dimensions of the pit should be 40-50 cm larger than the structure. This is necessary for backfilling the filter pad. Its area must also be more sizes infiltrator.

Formation of a filtration layer

A mixture of crushed stone and sand serves as a natural filter. Crushed stone should be of medium fraction, and sand should be fine-grained. Previously, geotextiles are laid at the bottom of the pit.


Photo: crushed stone filtration layer

It will perform 2 functions - to maintain the integrity of the filter from crushed stone and sand. Also, its structure prevents the passage of biological elements that may remain in the wastewater afterward into the lateral parts of the soil, bypassing filtration.

Geotextile is laid only in the side of the pit and on top of the infiltrator.

Photo: geotextile laying

The thickness is determined by the hygroscopicity of the soil - the rate of passage of water through its layers. But it cannot be less than 400 mm.

The final stage is the leveling of the layer in compliance with the level.


Photo: bedding leveling

Installation of the infiltrator

The design can be installed independently, without special equipment. The weight of the average model is from 15 to 20 kg.


Photo: moving the filter into the pit

Important! After the body has stood on the prepared sand cushion, it is necessary to check the installation level. Next, all inlet and outlet pipes are connected, an air exchange pipe is installed.


Photo: all inlet and outlet pipes are connected

After checking the tightness of the joints, the pit is completely covered with sand. It is noteworthy that the infiltrator does not need to be additionally fixed.

In most cases, the installation depth is more than 1 m, so the top layer of backfill will reliably protect the structure from “floating” to the surface.

There is an alternative way to install an infiltrator together with a storage well.


Photo: installation of an infiltrator together with a storage well

In the lower part of the drainage bed, special plastic pipes with holes are mounted - drains. They are connected to the storage well with observance of the angle of inclination to it.

After cleaning, the water does not go into the lower layers of the soil, but, concentrating in the pipes, enters the storage tank, from where it is pumped out using a drainage pump.

A similar installation scheme is used for dense soil layers with a high clay content. If such an installation is not made, then the volume of water absorption by the soil will be much less than its mass arriving from the septic tank, which can lead to filling the infiltrator and backflow of water into the VOC.

After completing these procedures, you can proceed directly to operation.
Maintenance of the structure consists in periodically checking the air exchange pipes - checking their condition and degree of contamination.

Infiltrator for septic tank Tank

The Triton-Plastic company is a manufacturer of well-known anaerobic septic tanks of the Tan and Triton brands. Thanks to our own production plastic products, she started first on Russian market release infiltrators as an additional option for a septic tank.


Photo: infiltrator for a septic tank Tank

At present, it is possible to purchase the Triton 400 infiltrator with the following technical parameters:

  • dimensions - 1800 * 800 * 400;
  • wall thickness - 10 mm;
  • construction volume - 400 l;
  • weight without connected pipes - 15 kg.

Depending on the model of the septic tank and the composition of the soil, a certain number of infiltrators is installed.


Photo: recommendations for selecting the number of Triton 400 infiltrators

Purchase price

The cost varies depending on the manufacturer. In this category, 2 main groups can be distinguished - domestic and foreign.

The advantages of using infiltrators are obvious. A small and inexpensive design, together with a septic tank, can provide high-quality sewage treatment. At the same time, their maintenance is minimal, and the installation can be done independently.


In areas where there is no possibility of connection to the central sewerage system, septic tanks are the best solution for collecting and treating domestic wastewater. various types. For disposal and post-treatment of wastewater, a septic tank infiltrator is used.

What functions this device is intended to perform, as well as the features of its selection and installation, our article will tell.

What is an infiltrator for?

Private households, as a rule, are equipped with a sewer system that involves the discharge of domestic wastewater either into innovative local systems of deep biological treatment, or into more traditional storage or anaerobic (bacterial) septic tanks. Deep cleaning structures remove water that is suitable for household use, such as irrigation.

But what if there is nothing to irrigate or there is much more treated effluent removed than is necessary for economic needs? It is possible to dispose of such water into the ground with the help of an infiltrator. Here it becomes a kind of replacement for the so-called filtering fields, but at the same time it takes up significantly less space.

In turn, anaerobic septic tanks do not allow reaching the same level of water purity as more modern counterparts. And it is in the infiltrator that 50-60% clarified wastewater can undergo post-treatment for their subsequent safe disposal into the ground.

Selection and installation of the infiltrator

Which model to choose

When choosing an infiltrator for installation on the site, you should be aware of the requirements for them:

  • The body is selected strong enough, because it must withstand the pressure of the soil from above.

  • It must also be intact and sealed on the sides and top in the mounted position, free of cracks and other damage.
  • The surface of the structure must be reliably protected from corrosion and inert to the effects of chemically and biologically active substances.

When choosing, the completeness of the completeness of the model is also important. The delivery set should include the infiltrator tank, inlet pipe, cover and ventilation pipe. At the same time, the cover must ensure complete tightness, which will facilitate the flow of drains only in the required direction, i.e. down.

As for the choice of model and manufacturer, companies that produce modern septic tanks often offer infiltrators as additional functionality. A striking example of this is the domestic company "Triton-plastic", which produces anaerobic-type septic tanks, such as Triton. It is the products of this company that are among the most popular today, in particular the Triton 400 model. It has rather thick 10 mm walls, a volume of 400 liters, a mass of 15 kg and a relatively low cost of about $ 100 (5500r).

It should be remembered that the choice of model and the number of tanks required for installation also depends on the type of soil on the site and the volume of wastewater. So, for installation on peat or sandy soil, one structure with a volume of 300 liters may be sufficient, while for clay soil you will need two similar containers connected to each other.

DIY installation

Installation of the structure is carried out taking into account some features:

  • The optimal distance from the septic tank to the infiltrator is considered to be 6 m, while the range of limiting distances is in the range from 2 to 10 meters.
  • The depth of the tank, as for the septic tank, should be chosen below the level of soil freezing. Otherwise, the water in it may simply freeze and disrupt the functioning of the entire system.
  • With small distances between the tank and the septic tank, it is better to avoid turns in the arrangement.
  • It is optimal to install the infiltrator at the same time as installing the septic tank.

The location of the tank, like the septic tank, is subject to similar building codes - 5m or more from the house and 30m from open water intake points.

So, the installation of the infiltration tank is carried out according to the following instructions:

  1. Having decided on the location, they dig a pit. Its depth is chosen such that, as a result, the structure is located above the level of groundwater rise and below the freezing depth. The width and height of the pit should be approximately 50 cm larger than the dimensions of the container on each side to ensure the possibility of backfilling the sand and gravel filter pad.
  2. The filtration layer is formed from crushed stone of the middle fraction. Fine-grained sand is used to backfill the structure from above and from the sides. The minimum thickness (height) of the crushed stone layer is chosen equal to 40 cm.
  3. Geotextiles are laid at the bottom and sides of the pit, with the help of which the integrity of the pillow will be ensured. In addition, they cover the upper part of the tank after placing it in the pit.

  1. An infiltrator is placed on the leveled surface of the filtration layer, leveled, inlet and outlet (if necessary) pipes are inserted, and a fan (ventilation) pipe is attached. All connections must be strictly sealed.
  2. Further, the container, already fully embedded in the system, is covered with prepared sand from the sides and from above so that the thickness of the sand layer above it is at least 15 cm, and carefully compacted.
  3. If necessary, a layer of insulation is laid over the sand layer. This is especially important if, for objective reasons, installation could not be carried out below the freezing depth.
  4. Backfill the excavation with soil.

The introduction of this element in sewer system a private house is especially important if the wastewater coming out of the septic tank is not sufficiently cleaned, and the water intake for household needs is carried out through a well in the same area.

Waste in aerobic septic tanks is cleaned by 70-75%. And this is not enough for water to be dumped into the ground or into a reservoir. In this case, a storage well or infiltrator for a septic tank is installed. The second option is considered the most preferable, as it has a low price and simple installation, and most importantly, it effectively cleans liquid waste. As a result, purified water can be reused for technical needs.

What it is

Compared to conventional cesspools local treatment plants are much more practical, as they are able to purify water at a sufficiently high level. Infiltrators are devices that purify the water coming from the septic tank. They are most often made of plastic or any other material that can withstand significant loads and is not subject to corrosion.

The infiltrator consists of a body without a bottom so that water can freely pass through the filter layer. As well as the inlet pipe through which waste from the septic tank enters, and the outlet pipe for air supply. The body is additionally equipped with stiffeners so that the device does not sink under the pressure of the soil and does not burst under the pressure of the water from the inside.

Advantages of the infiltrator:

  • the degree of wastewater treatment reaches 98%;
  • low cost;
  • does not need constant maintenance, including pumping out waste with a sewer.

Even with an anaerobic type septic tank, the entire system will cost less than a deep cleaning station. Also, compared to aeration fields, these devices require less space. The walls are cleaned of waste with the help of water passing through the infiltrator, so it does not require maintenance.

For installation, you will need to allocate space, but even one person can carry out its installation, since the weight of the device is from 15 to 20 kg, depending on the volume.

Principle of operation

A septic tank with an infiltrator works as follows:

  1. Waste water enters the septic tank. After that, the clarified waste flows through the outlet pipe into a pipe connected to the infiltrator.
  2. Once in the post-treatment device, the process of nitrification begins in the wastewater, or rather, organic matter oxidize and decompose. This whole process is started by the intake of air through the ventilation pipe of the infiltrator.
  3. The filtration layer under the device cleans the water. As a result, sewage waste, cleaned by 70% in a septic tank, is finally filtered out.

If the maximum one-time discharge is greater than the volume of one infiltrator, then several of them are installed. So, if one is completely filled, then wastewater flows through the overflow pipe into the next, and so on.


 Principle of operation

How to DIY

To make an infiltrator, you will need stainless steel 2-4 mm thick. The volume is determined depending on the size of the septic tank. The infiltrator is made in the form of a cone or a trapezoid. In order for it to withstand the load, the body must consist of two layers, with a gap between them of 1-1.5 cm. A rubber insulation will be laid in it, which plays the role of a shock absorber.

First, one body is welded, and then the second. In the process of work, you need to check that they are identical. Once both bodies are welded, they are combined. Holes for pipes are made on the side walls and as close to the top as possible. After that, the pipes are joined or welded. The ventilation pipe is made with a bend. From the device, it should move horizontally, and only then rise up.


 The cost of the infiltrator is low, so it is better to buy it

Mounting diagram

Another important advantage of the infiltrator is that it can be installed to an already installed septic tank. But it is best to carry out installation together with the main system.

At the first stage, it is necessary to choose a place for the installation of all structures.

Note! Regardless of the fact that water will be absorbed into the ground, the distance from any types of water bodies, including wells, should be at least 15 m. From the house at least 5 m, from the road 2 m.

As soon as a suitable place is found, a foundation pit is dug. Its depth depends on the level of groundwater. The infiltrator must be above the level of its average annual rise. The distance from all walls of the pit to the device is made at least half a meter. This entire area will be covered with a filtration layer consisting of sand and gravel. It is recommended to take crushed stone of medium fraction, and fine-grained sand.


 Wiring diagram of the septic tank Triton-mini

To prevent untreated wastewater from leaving through the side walls of the pit, all 4 sides are covered with geofabric. The geofabric is made longer than the height of the pit so that it can close the infiltrator from above. After the fabric is laid, a filtration layer with a thickness of at least 40 cm is filled up. The infiltrator must stand strictly horizontally, without tilt, so the crushed stone is leveled, determining the evenness using the building level.

Note! The thickness of the filtration layer depends on the speed of water passage through the soil. But less than 40 cm, it is not recommended to do it.

Since the infiltrator weighs no more than 20 kg, it can be installed without special equipment. After installing the post-treatment device, a drain pipe from the septic tank and a ventilation pipe are connected to the nozzles. Before filling with soil, it is necessary to check the tightness. If there is no leak, then they fall asleep. The infiltrator does not need additional fastenings, since heavy soil will not allow it to budge.


In addition to this system, you can install a storage well. In this case, mount plastic pipe with holes in the walls to the lower part of the filtration layer. In this case, the pipe should be inclined towards the well. Purified water will flow through the pipe into it. The water is pumped out of the well. Such a system is relevant for places with clay soil, where water cannot soak quickly enough.

When choosing an infiltrator, you need to pay attention to the material from which it is made. It should not corrode and interact with chemicals that can get along with sewage. Most manufacturers use cross-linked polyethylene for infiltrators.

The body of the infiltrator must be strong and without cracks. The device will have to withstand the pressure of soil and water when it is completely filled with it.

The main characteristics of the infiltrator are its capacity and dimensions. Since the maximum possible burst discharge of water from the septic tank and the filtration rate depend on these parameters.


When choosing an infiltrator, it should be borne in mind that the actual capacity of all installed infiltrators together must be at least 3 times greater than the performance of the septic tank.

If the septic tank is 500 liters, then the infiltrators should be 1500 liters. At the same time, the required capacity of such devices must always be calculated with a margin. Soil type also has a significant impact on the number of infiltrators. So, for example, loam passes water much worse than sandy soil. Therefore, when making calculations on the volume and number of devices, this characteristic should also be taken into account.

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