Repair and design

Autonomous sewer systems

Autonomous sewage systems have a complex name, but in practice everything is much simpler. Autonomous call those sewers that serve only one residential house.

As a rule, it is a country house, cottage or cottage. Autonomous sewage system is used to collect waste both from the house itself and from outbuildings, say, bath houses.

Centralized sewage systems serve several houses or an apartment building. This is, in fact, the whole difference between them.

Naturally, they will differ not only in the name, but also in the principle of operation, organization technology, volume and other characteristics. For natural reasons, autonomous sewers are easier to organize than centralized ones.

There are several devices on the domestic market to ensure that the sewage system in a private house works properly and without interruption. First of all, these are local treatment facilities, which are fairly simple in organization and affordable.

It also has its own typology, which we will try to consider in more detail.

Organization of local sewage treatment plant

Often, local aeration facilities call any aeration structure for cleaning runoff water. Also to LOSam include sewers that work with the use of bacteria.

Autonomous sewers on the basis of a septic tank and the subsequent tertiary treatment with soil work a little differently.

Combined systems work simultaneously using several technologies. However, such a system is much more difficult to manage and requires power supply with electricity.

In any case, no matter how the autonomous sewage system works, the basic principles of work for all of them are the same.

The work of the local cleaning system includes three stages:

  • Collection of drainage water from sanitary appliances in the house.
  • Transfer of runoff water to the storage system.
  • Water purification and its utilization.

The last stage is most important for ensuring comfortable use of sewage and for ensuring safety for the environment, because runoff water often contains most of the chemical impurities.

If the water intake of storm sewers, as a rule, does not have a section for water purification, then each autonomous sewage system for private use must contain this element without fail.

Very often, the device for the collection, purification and disposal of water is an ordinary cesspool. Such an organization has existed for more than the first century and is the most affordable and affordable option for an organization.

The cesspool collects wastewater. Here they are naturally settled, precipitation from the contaminants falls, and water is disposed of into the soil. All this is quite harmless in the description, but not always convenient and safe.

In fact, the cesspool is the last century in the world of autonomous sewers. The pit does not relieve its owners from the spread of unpleasant odor from wastewater, and the collection of sewage in this way can be dangerous for the environment.

Fortunately, more and more users are refusing cesspools in favor of more modern and convenient means of sewage treatment.

A septic tank works much better, of which there are quite a few on the modern market. The septic tank not only collects waste water, but also cleans them from most contaminants and impurities.

A good septic tank is able to clear the drain by seventy-five percent. This makes the water that is disposed of in the soil, almost completely clean.

At least, the water is purified to the degree of the so-called lightening, that is, it becomes transparent.

The septic tank has a small minus - this is the area it occupies. By itself, the chamber of purification is not too large, but there is also a so-called aeration field occupying a considerable area.

Another option for organizing an autonomous sewage system is a bio-cleaning station. Adherents of this kind of purification is enough, in spite of a number of minuses that exist in this option.

Firstly, such a station requires around-the-clock electrical consumption. Such maintenance can be quite expensive and not everyone can afford.

Secondly, the bio-cleaning station itself is expensive, much cheaper to buy an ordinary septic tank, which works almost as effectively.

Biobacteria are very sensitive to all kinds of effects. For example, they will not withstand chemicals entering the stock. If bacteria do not have access to oxygen for a long time, they can also die.

In addition, the bacteria need constant nutrition. If you are planning a seasonal use of sewage, then biobacterium will not survive a long break without feeding.

Learn more about how to organize sewage systems and how stormwater sewer trays are used, read our building forum.

Watch the video: How Do Sewer Systems Work? (January 2020).