Plastic cesspools

Plastic cesspools are the main element of the external contour of the autonomous sewage system and are used to receive and store wastewater. This design in the manufacture is equipped with a system of supplies and ventilation, it is completely ready for installation and use. The size of the plastic container is determined by the number of family members and the intensity of use of the plumbing and sewer system.

The drain pit from plastic possesses a set of positive qualities, the main thing for many owners of houses is a fast and simple installation. No special knowledge is required to dig a pit and connect a ready-to-use cesspool.

To install a drain hole of concrete rings will require the involvement of a crane, and plastic rings are able to lower three men into the pit.

Among the large number of models and sizes, it is easy to choose a design that has optimal characteristics. The volume of the plastic tank for wastewater is 3–20 m.³, but the larger the size of the tank, the higher its cost. In this case, the filling process will go slower and you can save on the services of vacuum trucks by ordering transport with a large capacity.

Pluses of plastic tanks

Plastic waste collection tanks have a number of positive characteristics:

1. Tightness - all drains and sewage get into the tank and remain inside until pumped out. They do not pollute the soil and groundwater, do not spread unpleasant odors sewage. The thick walls of the tank and the cast construction without seams eliminate leakage.
2. Durability - the polymer used for the manufacture of septic tank, is resistant to negative temperature and heat. Hard material is not deformed by the pressure of the soil. Plastic is resistant to chemicals and is not afraid of corrosion. The inner walls of the tank are smooth and no deposits appear on them.
3. Durability - plastic tanks are designed for decades of operation.
4. Cost - the price of propylene or polyethylene containers is lower than the device of an airtight pit of concrete rings, and plastic is not inferior to concrete in terms of durability and reliability.

disadvantages

Of the minuses, it is worth noting the low weight of the tank, which is simultaneously considered one plus. Moving soil and rising water levels in the soil push the sewage tank to the surface when it is not filled with drains. To solve this problem, use anchors - special weighting, attached to the tank. Another way is to lay a reinforced concrete slab at the bottom of the excavation pit and fix the container on it with the help of cables.

Another disadvantage is the possibility of accidental mechanical damage by solid objects in the soil (sharp stones, metal fittings). You can protect your plastic septic tank using fiberglass to wrap containers.

Location selection

There are several important rules and requirements when choosing a place for the installation of plastic containers for drains. It is necessary to study the relief of the site and find a place with a deep occurrence of groundwater, if the aquifers are located closer than two meters to the surface, then it is impossible to install plastic rings for cesspools.

The distance from the house to the point of accumulation of waste is 5 m, 30 m to the well with water, and 3 m to the road and the fence.

The direction of the sewer line is taken into account, it is desirable that the pipes follow straight, without turns, preferably at a right angle. The drain pipe is supplied at a depth of 1 m; it is laid at an inclination of 3 °. For connection in the tank there is a sealed entrance, designed for a pipe diameter of 110 mm. Pumping of sewage drains will be carried out at least twice a month, therefore, it is necessary to provide for free passage for the truck of the nightman.

The frequency of pumping will depend on the number of people living in the house, the intensity of water consumption and the capacity of the sump.

Installation of a polymer sump

To install a plastic sump, you must do all the work in the following sequence:

1. The pit under the plastic container is dug out more than its dimensions. Part of the height will be required to create a concrete base for a septic tank, the space around it remains free, so that it is possible to strengthen the walls and reduce the impact of the soil on the sewage tank.
2. If the soil on the site is dry and the groundwater is far away, then it is limited to laying a layer of sand at the bottom of the foundation pit that is 15–20 cm and serves to level the site. When moving the ground base reinforced concrete screed. Formwork is installed at the bottom of the pit and reinforcement is laid as a reinforcing layer. Concrete is poured into the formwork, the height of which is 20 cm. It is necessary to level the solution to obtain a flat horizontal plane. After solidification of the screed in the pit, lower the container.
3. The lowering of the cesspool is performed on the ropes fixed in special lugs. There should be a gap of about 30 cm between the container and the walls of the pit. Plastic container is attached to the concrete slab with steel cables, which will prevent its displacement. In order to prevent the wall of the pit from falling down, a brick is laid over it, and if the ground is exposed to groundwater, it is better to cover the wall with a solution of sand and cement.
4. A sewer pipe is connected to the drain hole and the tightness of the ventilation is checked. It is impossible to neglect the pipes for the removal of gases accumulated in the tank, since during fermentation of sewage in an airtight structure an explosion may occur.
5. Pumping out of wastewater occurs as the tank is filled, in order to monitor this process, a float is set to signal the level of filling.

When deepening the plastic tank to a distance of more than 0.5 m, it is necessary to install a reinforced concrete slab or other overlap above the pit. The plastic sump has ventilation pipes that must be airtight and securely fastened. In the process of falling asleep, care should be taken not to damage the ventilation.

Service

Sealed container will require periodic cleaning by vacuum trucks. If the house is used seasonally or there is little plumbing, it will have to turn to them infrequently.

For the decomposition of waste, there are chemical and biological products that activate processes and reduce odor.

Autonomous sewage is often the only way to create a comfortable environment in a suburban home, and the choice of storage tank plays an important role in its functioning. Using a plastic cesspool will allow you to safely use the sewer system for many years.

Video

Learn about the principle of cesspools of plastic or metal barrels from the video below: