The device of a septic tank in a private house: the features of the process

Autonomous sewerage at home is one of the main elements of suburban construction, if there is no possibility of connection to a common central drainage system. The most common design can be called a cesspool. Its walls are often laid out with a stone or brick, and the bottom is cemented. In the pit, a hatch is left, through which it must be cleaned.

The autonomous sewerage of the septic tank is a rather complicated structure and differs from the cesspool by a large number of features. First of all, to clean it, you need to organize a drainage system. For its construction it is necessary to dig a well at a sufficiently large distance from the house (about 20 meters). It should be noted that drainage must be organized below the water intake level.

The device of a septic tank in a private house is made in the autumn and in the summer, when the height of the groundwater has the maximum value. This is done to ensure that the drainage system is properly located. During the preparation of the excavation it is necessary to take into account the height of the foundation, the cover layer, and also the size of the settler. In order to attach a sewage treatment plant to the walls of the pit, cables or metal strips are used.

The device of a septic tank in a private house provides for the organization of a pit, the depth of which should not be less than 6 meters. The volume of the pit depends on the number of modules that will be installed. In addition, the bottom of the excavation should be covered with a thick layer of sand and compacted. Before that, a drainage pipe is installed at the very bottom. A reinforced concrete slab is laid on top of the septic tank , which is covered with cement and sand and compacted.

The device of a septic tank in a private house also provides for the installation of a cover that must be above the ground level. In this case, meltwater can not enter it. For winter, the cover of the septic tank should be covered with thermal insulation.

Ventilation pipes are used to remove evaporation and gases from the sump . Care should be taken to ensure that the sewer does not become clogged. For this purpose, the pipes must have a certain slope toward discharge of sewage, and they should not have steep bends or turns.

The device of a septic tank in a private house is made in order that the structure can be cleaned of a small amount of impurities. In addition, the sediment, which is formed after the decay of all the substances trapped in the sediment bowl, can be used for agricultural purposes. That is, the complete purification of the contents of the septic tank takes place in the soil.

The design can have several chambers. And their large number will ensure a uniform distribution of the sediment. Septic tanks can be constructed from different materials. The most common of these is the concrete ring.

The content of the septic tank completely decays in 2 months. To ensure that the wastewater treatment has a high degree, it is necessary to allow the contents to stand for 10 days. Conclusion: the septic device has many advantages, therefore its construction is mandatory in the absence of centralized sewerage.