Pressure sewage - features and important points to be aware

It is difficult to imagine a modern person without the usual comforts, and hardly anyone is ready to give up a comfortable stay in favor of saving and giving up everything incomprehensible. Pressure sewage - what is it for us who have no idea where to put all the waste in the absence of this system? Again, but still say that this is the level of comfort that we simply need.

Sewage disposal

One of the most important aspects of building a house with your own hands is the arrangement of life support systems for the home.

These include systems:

• Water supply and drainage.
• Heating.
• Ventilation.
• Power supply, etc.

Practically all engineering communications are laid in stages in the process of building the house. In this case, the planning is carried out at the time of the creation of the project, in which the sewage system occupies an important part.

It is good if there are all necessary centralized water supply and drainage systems near your site with the ability to connect an additional user. If the connection is not possible, you will have to develop a project of individual autonomous water supply and disposal of your house drains.

The drainage system at home is divided into two parts:

• Inner. It consists of pipelines (risers and sun beds), in which the drains come from sanitary equipment connected to them: sinks, bathtubs, showers, toilet bowls and sinks. gravity fall into the riser. All sewer risers (vertical pipelines) rise above the roof and end with a so-called fan pipe for ventilation of the sewage system. At the bottom of the house, at the level of the basement or basement, the riser enters an inclined lounger, which, going outside the building, becomes the beginning of an outdoor sewage system.
• The outer part of the drainage system can be arranged in two ways:

• Gravity system of pipelines, wells, sewage treatment plants.
• Pressure sewage with connection to pipelines of special pumps.

Sewage with forced wastewater promotion

The method of organizing sewage outside a private house depends on several objective conventions:

• The features of the terrain, because of which the exit point of the sewage from the house is below the sewer septic tank.
• A large distance from the exit point to the connection to the well, which requires laying the pipe to a greater depth to maintain the necessary slope.
• The presence of soils unsuitable for the project depth of the sewer pipe, with a sufficient slope (very loose, loose, hard rock).

Note! The basis for creating a compulsory drainage system is the calculation of pressure sewage, taking into account the volume of wastewater and the speed of their processing. If this process is problematic for you, you should contact the specialists in order not to invest in expensive repairs in the future.

Let us briefly say that the pressure sewage system indicated by us is a tank for collecting and temporary storage of drains with subsequent emptying through an external sewer pipe by means of a pumping station.

Note! Prior to the design of the system, examine in detail the SNiP on pressure sewers. This will help you to plan the system nodes correctly, select suitable pressure sewage pipes, pumps, etc.

Characteristics of the pressure head sewerage

The specificity of pressure discharge is manifested both at the design stage and during operation of the system. Now let's talk about its pros and cons, which is worth paying attention to.

First, about the benefits of such a discharge of waste:

• Shallow depth of pipe laying, which significantly reduces labor costs for earthworks.

Attention! When laying the external sewage pipelines, the depth of soil freezing in the region should be taken into account. Proceed from the maximum indicators.

• Pipe for pressure sewage can be of smaller diameter in relation to the gravity system, but, of course, be proportionate to the pump inlet.
• There is no need to comply with the slope of the pipeline.
• Ensuring self-cleaning of pipelines from the inside. Forced promotion of waste mass under pressure from the pump simultaneously cleans the internal cavity of the line, preventing debris from sticking to the pipe walls.

The main disadvantage of pressure discharge waste is the higher price of such a system compared to the gravity analog. But, if you weigh the pros and cons, it has a place to be in the sewer of country houses.

The shallow depth of the route and the reduction of the diameter of the pipes will not cover the equipment of the pumping station and the receiver - the wastewater storage. The total cost of the system will increase the need for a larger number of manholes to inspect the condition of the pipelines.

It should be remembered that the use of a pump with a mandatory connection of it to the mains, automatically makes the system volatile. When a power outage for any reason, the pumping of wastewater from the storage tank stops.

One of the very important aspects in organizing the drainage of your home are:

• The security zone of the pressure sewage system, which limits the location of the system geographically:

• Not closer than 250 m from the bank of the nearest river.
• At 100 m from the shore of the lake.
• At 50 m from the sources of water intake underground.

Scheme of the forced discharge system

For the design and installation of a pressure sewage system on your own, we suggest to understand its work on the example of a simplified scheme, which consists of:

• Receiving capacity, divided into two parts:

• Sump It receives waste water directly from the pipeline of the internal system. As the sewage is filled, the method of overflow enters the pumping compartment.
• Bay pumping. From it, a submersible pump drains pumped into the external network. The nozzle of the fecal unit on the feed is equipped with a grinder. The filling level of the pumping compartment is monitored by a float sensor.

In the purchase of the pump required power will help us made the calculation and instructions for a specific unit.

• In the place of overflow, the wall between the compartments is equipped with a grating for screening out inorganic debris: plastic, fabric, etc. This is a measure to prevent blockages in sewer pipes.
• This is followed by the pressure pipe of the external sewage system of the calculated diameter.

Tip! To facilitate the construction and maintenance work, it is better to use PVC-U pressure sewer pipes.

Modern PVC sewer pipes

• Able to withstand pressure drops inevitable in the operation of the pumping station.
• They have a strong butt joint with the help of welding with a special device.
• Not inferior in strength to the usual iron and steel pipes.
• The elasticity of polyethylene pipes facilitates the work, if necessary, of bends with a small radius at the turns of the track.

On the way of the sewage, inspection, revision, flushing wells and a sewer head damper are arranged. The pressure relief well works on the principle of a hydraulic jump or jet break.

It is arranged as follows:

• This is a well in which the inlet of the pressure pipe is higher than the outlet to the gravity sewer.
• The flow of waste going under pressure is broken against the wall of the damper or on the combs at the bottom of the drop well tray.

It is easy to build a drop well by yourself, using a typical drawing of a sewer head damper well, but we still advise you to purchase the finished product. So you will at least have a guarantee on the purchased part of the system.

Conclusion

As you can see, pressure sewage in a private house has many of its own nuances, which only experts can know about. Of course, it is possible to independently study this question, but it is worth understanding whether you are ready to spend your time and deprive yourself of the guarantee for the result from the work done? In some cases, you see, saving is inappropriate.

In the presented photos and videos in this article you will find additional information on this topic.