Septic tank from barrels in the country itself

19-02-2018

Outdoor sewage

Even if the cottage is visited periodically (on weekends or holidays), it is simply necessary to create comfort there. Therefore, you need to build an autonomous sewer. But after all, nobody wants to spend big money on the purchase of a septic tank or rings of concrete goods for the construction of sewage treatment plants? How to be? The output is very simple - to build a septic tank from the barrels in the country. This option will be cheap and easy to handle with a small amount of wastewater.

How will work

The country house needs to create a drainage system and its autonomous sewage system. At the same time it is necessary to solve the problem with wastewater treatment.

To do this, you can use conventional metal or plastic barrels. What exactly to choose - to decide the owners. As a rule, such containers can be found with a capacity of 200 liters. Plastic drums are available in a larger range.

Whatever material you choose, it is important to understand how a septic tank works. So:

All drains from sanitary units fall into sewer pipes, and from there - into the first tank. It is called a sump. In this barrel, the effluent will be settled, and large fractions of the pollutant will settle to the bottom.
From the first tank the effluent through the connecting pipe enters the second barrel. Here there is a further, more subtle purification. Microorganisms that process organic pollutants take part in it, such colonies are formed by themselves in 2–5 weeks. But still, to improve efficiency, it is advisable to add biopreparations to the container. They contain colonies of the desired microorganisms in "sleep mode". After the water enters the tank, the bacteria “wake up” and begin to recycle waste.
After cleaning in the second chamber, the effluent will fall into the accumulation well or into the drainage system. In the first case, after some time, the accumulated water is pumped out. And if a drainage well is used, then the effluent is immediately discharged into the ground.
In such a system, wastewater is purified to 80–90%. If you need a higher degree of purification, you can use the third camera. It will also "work" colonies of microorganisms. But, as a rule, for the suburban area of this level of cleaning is enough.

We build a septic tank

Before starting work it is worth talking a little about choosing a site for a structure. Here it is necessary to take into account the sanitary requirements. The septic tank should be located no closer than 15? 20 meters from the apartment building. Distances from a water source should also be maintained, from 30 to 50 meters, depending on the permeability of the soil. Do not forget about the neighbors. If you place a septic tank less than 1.5 meters from their site, it will be illegal. You will have to periodically use the services of vacuum trucks, so you should consider the presence of access roads.

Once the place is determined, you can proceed to construction. A septic tank made of plastic barrels or metal structures is made in a similar way. At the first stage, the foundation pit is dug for tanks and trenches for sewer pipes.

The size of the pit will depend on the selected barrels. At the same time it is necessary to leave space for backfilling and insulation. Also made a step height of 10 centimeters. This is necessary so that the next barrel is installed just below the previous one. Trenches for sewer pipes should be made with a bias towards the septic tank, so that the drains flow there by gravity.

Tip! Barrels are lightweight enough, especially plastic, so that they are not displaced by soil or groundwater, it is necessary to mount a concrete screed. To do this, a sand cushion is placed on the bottom and a screed of sand-cement mortar is poured. Metal loops are inserted into it, to which the septic tank will be attached.

Barrels are set in a row. Due to the presence of a differential (a pre-made step of 10 centimeters or more, depending on the chosen construction), the volume of the second barrel will be used to 100%. The distance between the containers is 15-20 centimeters. Now the barrels are fixed on the hinges made in the concrete base and connected to each other. In the first barrel a hole is made in the lid for the sewer pipe, and another at the side in the upper part, to bring the pipe to the second tank. The pipe will also enter the second barrel from above and exit at the side. The joints of pipes and barrels are treated with mastic to achieve tightness. From the second barrel, the pipe will be discharged into an accumulation or drainage well.

After all connections are made, the septic tank is filled with water and sprinkled. Sand or a mixture of sand and cement is used for this purpose. Backfilling is done in layers, every 15–20 centimeters are being compacted. Before filling the upper part (if it will be above the level of soil freezing), it is insulated with foam plastic or other suitable material. After installing the ventilation pipe and the inspection hatch, you can use the septic tank.

We recommend to read:

the principle of the autonomous sewage of a private house;
how to make a septic tank of eurocube with their own hands.

Video

This video shows how you can make a sewage from used plastic containers: