Sewage pumping station: the principle of work and advice on choice. Installation of a sewage pumping station

Currently, most industrial enterprises, as well as private residential sectors are equipped with a sewerage station. This is necessary for the forced diversion of sewage and industrial water. For example, if the bathroom is located below the main sewer pipe, then the option of removing wastewater by gravity disappears by itself. Let's take a closer look at what a sewage pumping station is and how it works. In addition, we will consider the key moments of installation of equipment without involving specialists.

General concepts and information

Currently, three types of CNS are sold depending on the design: simple, medium and complex. If you want to organize waste water disposal in a private house, then it hardly makes sense for you to purchase complex sewage pumping stations. Firstly, it is very, very expensive, and secondly, their productivity is much higher than the amount of sewage that will accumulate in you. In most cases, the simplest CNS is enough, if it is a large industrial enterprise, then it makes sense to give preference to more complex designs.

Household sewage pumping station: construction

Depending on the manufacturer, CNS equipment may be disconnected. To be clear and brief, this pumping station is a sealed tank with a fecal pump. What is the storage capacity for? There are collected products of life. The material can be different: concrete, plastic, metal. The task of the pump is to raise the sewage to a certain level, further outflow is realized by gravity. Often the design implies several such pumps. One worker, and the second backup, which is needed to support the CNS in working order in case of failure of the main one. In addition, there is a system of pipelines with valves for controlling pumps. Pipes can lead to purification systems or divert water to central sewerage. Another integral part of the design - float switches, almost the same as in the toilet bowls. They work simply - when the drains reach a certain point, the system turns on, the water is pumped out.

Principle of operation of CNR

Let's take a closer look at how the device functions. It should be noted right away that nothing is complicated. When the sewage level rises to a certain point, the float switch sends a signal to the receiving tank, into which the waste is pumped. It is worth noting that there are submersible pumps. When they are switched on, the drains are sent to the distribution chamber by means of a pressure line. By opening the latches sewage water goes either to the treatment plant or to the central sewage system. In order to avoid the reverse entry of sewage into the distribution chamber, a non-return valve is installed in the distributor chamber. That's how the CNS works. Sewage pumping stations are equipped with a ladder, through which maintenance is carried out. The hatches of the upper part of the installation are hermetically sealed, which prevents smells from penetrating into the maintenance area.

Types depending on capacity

Mini-stations are a very simple device that connects directly to the toilet. Pump of low power (no more than 400 W), faecal-submerged, with cutting tools. In fact, this is a good solution for giving.

There are also average CNS. Sewage pumping stations of this type are equipped with a polymer tank and a submersible pump. They are most in demand, due to their high versatility. They are suitable for both dacha and for use in an industrial enterprise, in contrast to small and large NPS. If the device is intended for use in domestic conditions, then most often one pump with cutting elements is mounted. For industrial purposes, pumps do not have cutting elements, they are provided for 2 pieces.

As for large CNC, they are used in large industrial enterprises and in urban sewage systems. Pumps in this case are multi-channel, without cutting tools.

A few good tips for choosing CNS

If you decide to choose a sewage pumping station, then be careful. There are several important details that you should always pay attention to. But first specify the following:

• Depth of occurrence of the system;
• Pump capacity;
• Type of pump (with cutting tools, single-channel or multi-channel running wheels);
• Material from which the body of the CNS is made;
• Diameter of the shell.

It is necessary to understand that for today manufacturers make the cases from polypropylene and reinforced fiberglass. Also, there are options for the body of polyethylene, concrete and steel. But the last two are more expensive. Also, the metal will be corroded.

To "stuff" the station served as long as possible, all of its elements must be stainless. If there is seismic activity, then the hull must be heavy-duty. For northern regions additional warming is required, it may also be necessary to increase the depth of occurrence. So the sewage pumping stations for the house will serve as faith and truth for a long time.

What is good about Grundfos sewage pump station?

This manufacturer is considered the leader in the market for the production of modern CNS. It is worth paying your attention to a wide range of Danish products. Here you can find both mini-sewer stations, and a modification of the "wet well", etc. For example, the manufacturer gives a guarantee of about 50 years in a mini-station. This despite the fact that the installation is practically maintenance-free. In addition, you can buy the product on request.

Let's look at the technical characteristics of Grandfoss Integra. The installation itself is quite large, its height can be from 4.5 to 12 meters. Pneumatic cylinders provide tightness, and the tank is made of fiberglass, so it is very durable. Of course, we can safely say that the CND from Denmark are considered to be among the best. This is due not only to the quality of the assembly, but also to the use of advanced technologies.

How to draw up a project?

Before proceeding directly to the installation of equipment, it is necessary to calculate everything. And first of all - the flow of water. To do this, you need to take the minimum and maximum costs, as a result, get the average. Next, you need to determine the power of the pump. To do this, it is necessary to calculate the height of the riser, taking into account the loss of the heating pipeline and air.

But this does not end there. It is also necessary to draw up a general schedule for the work of the station, and the figure obtained as a result of the functional calculation must be somewhat larger than the usual calculation. It is important to understand that there are different pumps. Some are designed to work in short periods of time under load, others are the opposite. Do not forget about the occurrence of overloads, which the submersible pump must always withstand. The more often they arise, the more powerful the unit is needed. At the final stage, we determine the volume of the receiving tanks and can proceed directly to the installation.

Installation of a sewage pumping station

Before installing the main equipment, you need to put a concrete slab, to which the base is attached. Its minimum thickness should be 30 cm. You can use special anchors for the connection. Then you can proceed directly to the installation. For this, the first thing to do is dig a foundation pit, corresponding to the depth and the diameter. If groundwater appears, then it will be necessary to make a foundation. Then you can put the station and fix it to the plate, then cover the CNS with soil.

In most cases, the installation of a sewage pumping station passes without any problems. As noted above, for northern regions, where soil freezing is essential, additional warming will be required. It can be sheets of foam or something like that. If we are talking about installing a mini-station, then there will be enough basic plumbing skills. The main thing is to ensure tight connections and install the submersible pump correctly. At this installation can be considered complete.

Advantages of CNS

Of course, it is not always expedient to install a sewage pumping station. If you have a normal central sewerage, then there is no special meaning in this purchase. Nevertheless, most private sectors need CSN. And this is an obvious fact. Let's look at the main advantages that the sewerage station has. Firstly, this kind of construction very effectively saves the living space, since the equipment is located on the street. Another big plus is the complete automation of the process. After you have completed the construction of a sewage pumping station, you can almost forget about this structure. Of course, the installation needs periodic maintenance. KNS is completely harmless to the environment, which is important, especially if the device is installed on an industrial site. Some models have cleaning filters, so that waste water can be sent directly to the ground.

A few interesting moments

If you buy a complete sewage pumping station, then its installation is easier to entrust specialists. They will conduct a pipeline for you, and they will do the necessary tests. If you decide to do everything yourself, then be prepared to work hard. It's unlikely that you will manage for a day or even a week, especially if you dig a foundation pit manually. Nevertheless, you can save a substantial amount and get a precious experience. By the way, as for the prices for equipment, Sanicubic (France) with a capacity of 15 kW will cost you about $ 5000. In this case, wastewater will be sent directly to the ground after cleaning. But Homa Saniflux from Germany - the equipment is very expensive, about 18 000 dollars. Domestic manufacturers supply CNS at a slightly lower price.

Conclusion

So we examined with you the typical sewage pumping stations. As you can see, this is a rather expensive technique. However, in some cases this is the only available way out. Although we can say that a lot of craftsmen are doing something like CNS, however, it costs an order of magnitude cheaper. It always makes sense to purchase a sewerage station in half with a neighbor. This option is extremely relevant for a summer residence or a large private sector. So you can save a significant amount of money, and it will be easier to install it with third-party support.