The infiltrator is installed for the purpose of additional wastewater treatment, and this is done directly during the installation of the sewer system.
It is the most suitable option for a small area, when it is not possible to equip an extensive filtration field.
How to choose, calculate and equip, we answer all questions in our article.
What is it and why is it needed
Structurally, the infiltrator is a plastic container without a bottom, outwardly resembling a basin that has been turned over.. It should be mounted at a distance of 1–2 m from the septic tank.
Promotes the removal of wastewater into the upper layers of the soil, which helps to more fully clean them.
- Infiltrators are lightweightbut at the same time they have a sufficient margin of safety.
- They can be used on any type of soil.
- One such device successfully replaces up to 800 kg of gravel and up to 40 meters of drainage pipes.
- Large volumes help to cope even with the peak discharge of wastewater.
- Installation of the infiltrator is not difficultand further operation does not require constant monitoring.
- Differs in low costat the same time protects the site from waterlogging and reduces the amount of work in the arrangement of the sewer system.
When and who needs such a device? In a situation where wastewater is not completely cleaned by the septic tank. If the degree of purification is 75–98%, then the installation of an additional element of the system is required.
Principle of operation
Infiltrators work according to the following scheme: water after the septic tank enters a plastic container, after which they begin to soak into the soil layer, passing through a layer of gravel, designed for complete post-treatment.
In order to fully perform its functions, the capacity of the infiltrator should not be filled with runoff water to the limit. The working volume of the device must be more than peak discharges by 25%.
How to choose: criteria and quantity calculation
To choose the right post-treatment device for sewerage installation, There are a few key points to keep in mind:
- The infiltrator must match the septic tank. The total volume of wastewater contained in the tank, with an ideal ratio, must exceed the performance of the septic tank by 3 times. This guarantees its stable operation at peak discharge of water and exceeding its constant volume.
- Device settings, that is, installation volume and area.
- Soil characteristics: you need to calculate the speed at which the water will go into the ground, which will help you choose an infiltrator that adequately copes with its functions. The total number of devices required for a given site also depends on the type of soil.
- Despite the fact that the waters leaving the soil are cleaned with the utmost care, sewer systems should not be installed next to wellslakes, ponds, etc.
The number of infiltrators required depends on the capacity and model of the selected septic tank and on the type of soil. For example, if you want to equip a site with clay soils and at the same time the Tank‑1 septic tank was chosen, then you need to install two infiltrators of the most compatible Triton 400 type.
But if the same septic tank is installed in sandy soil, then only one post-treatment device is required. This is due to the fact that sand is much easier to accept and pass wastewater than loam and clay.
Necessary tools and materials: entrenching tools for digging a pit and compacting sand, geotextiles, insulation (if necessary), filtering materials (fine-grained sand and crushed stone of an average fraction), fittings for connecting and connecting pipes.
The infiltrator is mounted after the installation of the septic tankbut it is better if both of these devices are introduced into the system at the same time.
Firstly, choose a place to install the septic tank itself.
Secondly, calculate the required parameters containers.
And thirdly, determine the desired size and location of the landwhere the post-treatment devices will be installed.
According to building codes and regulations, the sewer system is laid 5 m from a residential building and 30 m from an open water intake, if any.
- At the first stage — determine the desired depth and dig a pit. It should not be higher than the average horizon at the maximum rise in groundwater. The dimensions of the pit exceed the dimensions of the device by 50 cm so that there is room for a filter pad. The distance to the septic tank should not be less than 1 meter.
- Now an infiltration layer is formed, consisting of fine-grained sand and gravel of medium fraction. Prior to this, the bottom and sides of the pit are lined with geotextiles. The same material should be placed on top of the infiltrator when it is already mounted.
- The filtration layer is leveled and the device itself is placed on it. This does not require special equipment, on average, one device weighs up to 20 kg.
- It is necessary to check the installation level, mount the nozzles at the inlet and outlet, connect the air exchange pipe. Additional fasteners for the container are not needed. The main thing is that all connections must be tight.
- At the last stage of installation, the infiltrator is completely covered with sand. over the geotextile layer. Usually the pit is a little deeper than 1m, which, along with a layer of sand, prevents the whole structure from “floating up”. The sand is carefully compacted.
Infiltrator for septic tank “Tank”
This manufacturer supplies local treatment plants to the market. The “Tank” system, consisting of a septic tank and an infiltrator, makes it possible to pre-clean sewageas well as to carry out post-treatment using filtration fields located in a small area.
At the same time, the quality of wastewater treatment is high, which makes the system popular in different regions of the country.
The Triton 400 infiltrator is most suitable for the Tank septic tankis purchased both in combination with a septic tank, and separately, since it is easily compatible with equipment from other manufacturers.
The number of tanks required depends on the capacity of the treatment plant. The body is made of durable plastica peculiar design helps to cope with high loads — with ribs over the entire surface.
- Walls 10 mm thick.
- Construction volume — 400 l.
- Dimensions: 1800x800x400.
- Weight — 15 kg.
Purchase price and reviews
- Infiltrator “Polex-300”: from 45$.
- “Tritor 400”: from 50 dollars.
- “Aquamaster. 150*80*40”: from 40 dollars
- “Graf 300”: from 50 dollars.
Oleg. 32 years old, owner of a private farmstead
“I began to see the benefits of installing an infiltrator immediately after the start of the sewer system. The cleanliness of wastewater discharged from my farm into the environment is important to me. The whole structure cost me little, its dimensions are minimal for such devices, and the degree of cleaning is simply excellent. I installed it myself and I think the ease of installation is a definite plus. In general, I achieved the desired result and saved money.”
Igor. 46 years old, owner of his own house.
“My favorite thing about the infiltrator is that the system requires virtually no supervision during operation. Maintenance is reduced only to the mandatory prevention of all sewers. In addition, after the re-equipment of the wastewater system and the installation of post-treatment facilities, the site is no longer waterlogged. All the main components were installed by me myself, while I did not experience any technical difficulties.
In order for the whole system to work as it should — correctly and without failures, pipe connections must be made tightly and efficiently. After installation, the owner will only have to check the operation of the sewer by making the first start.