The owners of their houses do not always manage to connect to the citywide sewage system. Therefore, most often in private houses, independent sewer systems are created, the maintenance of which falls on the shoulders of the owner of the house. In conditions of close proximity to the city, you can always call the sewers. But what to do when the city is far enough away, and each call costs a considerable amount of money?

In this case, the situation is saved by a submersible fecal pump for pumping out the sewage system at home. Which type of pump should you choose? Pressurized, vacuum, pumping or toilet with a grinder for forced sewerage- let's try to figure it out.

Sewerage pumps in a private house

The main difference between submersible pumps and drainage and semi-submersible pumps is that they are designed to pump out water with large solids. Place it at the bottom of a cesspool or septic tank. The pump body and parts must be made of stainless steel or cast iron. Do not forget that the pump always works in a difficult environment, therefore there should not be any soft and brittle materials in it. Automation and a float switch allow the pump to operate in full autonomous mode.

Main selection criteria

When choosing a pump, there are a few particularly important points to consider:

• the volume of liquid that the pump will pump;
• immersion depth;
• force of pressure;

Choose the pump that fits your sewage system exactly

• the diameter of the passage of the pipe that will transport the masses to the septic tank;
• way of engine cooling;
• location of branch pipes.

The performance of a sewer pump should play a key role in choosing a model. The higher the number, the faster and better your pump will work.

An equally important aspect is the impeller design.

Attention. The performance of the knives is higher than the performance of the cutting edge.

In addition, some models provide a self-cleaning system for the cutting mechanisms, which has an excellent effect on the smooth operation of the pump.

You should also take into account the head maximum of the pump. Conventionally, the average value is considered to be 10 m.

Installing a faecal submersible pump

In order for the engine to work without overheating and to cope with heavy loads, it needs good system cooling. So do not forget to pay attention to this when choosing a model.

The pump for pumping out the sewage must be installed at the very bottom of the tank. Guides for lowering the pump are mounted on the walls, and a special pipe is installed at the bottom. The unit itself is lowered using a cable or chain, the pump is mounted on the branch pipe due to its own weight.

Varieties of fecal pumps according to the principle of operation

The fecal pump must be selected depending on the type of sewage system and the presence of solid impurities in polluted liquids:

• pressure head;
• pumping over;
• vacuum;
• dressing with a grinder.

Their difference lies in the principle of operation, the maximum allowable temperature of the discharged liquid and the presence or absence of a grinder. The fecal pump with a special cutting mechanism is not afraid of blockages and is designed to pump liquids with any solid inclusions not exceeding 3.5 cm in diameter.

Feces pump with chopper

The principle of operation of this type of equipment is reduced to the automatic start of the knives, which carry out grinding in a matter of seconds, and then the pump pumps out the resulting liquid in the direction of the central riser.

Attention. Even if the item is in sewerage system inadvertently, it will be ground.

Forced sewage systems

If you have a very large distance between the wastewater source and the riser, you need to take care of a forced sewer system. It is a faecal pump equipped with a chopper and a storage tank. As you accumulate Wastewater the system automatically turns on the pump and shredders, and the masses are forcibly delivered to the sewer system.

The organization of the sewerage system is one of the essential conditions to maintain a safe sanitary and environmental background in private households. To ensure a properly functioning system for the removal of faeces, household waste and sewage, special equipment is used. In particular, to solve this problem, storage tanks, septic tanks, biological treatment tanks, etc. are used. However, the physical movement of waste is impossible without a pump for pumping out the sewage system. At home, this function can be performed by one unit, the power of which is enough for timely withdrawal of all volume accumulated materials.

What is special about faeces pumps?

The structural differences of this equipment are due to the specifics of the pumped waste and the place of operation. As for the first aspect, in order to ensure the possibility of pumping out feces, the devices have special extensions - both at the outlet and on the suction side. This makes it possible to handle contaminated liquids and masses that include fibrous elements. The place of installation and further use of the unit can be almost any. Manufacturers strive to produce universal fecal pumps - that is, suitable for connecting directly to toilets and other plumbing fixtures. There are also modifications specifically designed for interfacing with septic tanks, drainage systems and cesspools. Versions designed for connection with storm channels can also be used outdoors.

Equipment design

Like other types of modern pumps, models for pumping feces include an electric motor. It forms the power base of the unit, which drives the spinning wheel. As functional components that perform secondary and auxiliary tasks, one can distinguish a capacitor, an oil seal and a float switch. To ensure the reliability of the connections, sealing and sealing fittings are used. These are consumables that may require replacement during operation.

If you plan to use a pump for pumping out the sewage system at home under a roof, then you may not have any special design requirements. But again, street operation presupposes more reliable protection from both temperature effects and precipitation. As additional funds to increase the protective properties, experts recommend using containers and frame modules, in which the pump will be located during operation.

Varieties of aggregates

The main classification of fecal transfer pumps provides for the allocation of external, submersible and semi-submersible models. Outdoor units are installed on top of the sewer line, while submerged hoses are used for direct sampling. This equipment has the advantage in terms of accessibility to maintenance, but loses to submersible models in functionality and performance. In turn, the submersible pump for pumping out the sewage system itself, together with the communications, is lowered into the pumped liquid. The installation method is precisely what determines a higher degree of external protection of the equipment from aggressive media. When choosing models of this type, it is important to take into account the maximum available immersion depth and the possibilities for communication connection to septic tanks, cesspools and storm channels. This is important if a comprehensive homeownership service is planned. section by means of one pumping points. Semi-submersible units are also offered as an alternative. They do not completely sink into the collection point for effluent or faeces, and fixation is provided by a float.

Features of vacuum models

This is a special type of pump with the help of which fecal matter is pumped. Classic equipment of this type works in conjunction with sewer machines, but there are also stand-alone models. The main feature of such units is their close connection with the final pumping point. For example, if it is planned to deliver effluents and faeces directly to the accumulation site, then a vacuum pump for pumping out the sewage system in this system will work on the principle of creating a vacuum in the collection tank. It is important to take into account that the vacuum can work in a constant mode or only in certain one-time sessions - for example, when a septic tank is full. The pumps, assuming a constant pumping mode, automatically regulate the accumulation process of the waste collection chamber. That is, as the source fills up, they empty it, but so that the balance in the final storage tank is maintained.

Is a drainage pump suitable for a sewage system?

Fecal submersible models of pumps and drainage modifications perform approximately the same functions - they serve the sewer line. If the site provides for two pumps of both types at once, then the combination of their tasks can be traced in the water delivery circuit to the same septic tank or cesspool. But can drainage equipment replace the function of a special unit designed to handle faeces? It cannot fully. Since its design is not designed to pump liquids with solid inclusions larger than 5 cm.But if there is a grinding filter in the pumping circuit or a similar mechanism for preliminary waste preparation is provided in the toilet bowl design, then a drainage pump for pumping out the sewage system will become an even more advantageous option. The fact is that its design is more optimized and functional. With its help, it is possible with minimal energy consumption and a higher speed to carry out the removal of feces. But again, drainage structures are allowed only to work with previously crushed masses. By the way, this function is a sign of separation and faecal patterns.

Grinding Pumps

Chopping knives are often used to complement plumbing designs. They are also used at the stages of pre-filtration in septic tanks and waste water storage tanks. For the stable operation of the sewer system, such a mechanism should be provided at one of the stages of the transfer of feces. As already noted, the structure of the toilet bowl can also be provided with shredders, which will make it possible to use pumps of a different type. And still optimal solution Integration of the unit with rotating knives into the pumping equipment is considered.

The fact is that a pump for pumping out the sewage with a shredder will prepare the masses at a distance from the sampling site, which is an advantage from a sanitary point of view... In addition, the pump automation will make the processing optimal in terms of energy consumption. The equipment will control the process, using the grinding mechanism only when necessary.

What to consider when choosing?

Productivity and the ability to service material with specific characteristics are the main parameters of choice. Initially, the capacity of the equipment should be taken into account and this indicator should be correlated with the potential loads on the target pumping channel. Next, attention should be paid to the properties of the waste. Some models are focused purely on cold drains, while others can work in environments up to 40 ° C. What pump to choose for pumping out the sewage system, which receives drains from the toilet, washing machine, shower and kitchen plumbing? Obviously, in this case, a model will be required, the design of which will be able to work with both cold and hot water... This will be a system of integrated sewerage service, therefore, the pump performance should be as high as possible.

Optimal material of construction

The physical durability of the pump is also an important operating condition. In many respects, the protective properties of a structure are determined by the material of manufacture. Metallic alloys are gradually becoming a thing of the past, but they have their own advantages, which are quite appropriate in certain conditions of use.

So, steel cases will provide a large physical resource of work, but they are also the most expensive. If a pump is chosen for pumping out the sewage system at home, a submersible type, then it is better to give preference to stainless steel models. They are less susceptible to corrosion and other negative factors directly from effluents. Perhaps the most popular option is plastic. It is also the most affordable and practical to maintain. But if there are risks of mechanical damage to the structure, then it is better to refuse plastic models.

Fecal pump manufacturers

Pumps of this type are widely represented by Pedrollo. It produces both submersible and surface models. Almost all units of this brand are provided with cutting elements for crushing waste, and their bodies are made of steel and cast iron alloys. The Danish company Grundfos also offers attractive pumps for pumping out sewage at home. The equipment of this company is traditionally different ample opportunities control with support for impeller adjustment and settings in the thermal relay.

If you are betting on a budget solution, then representatives of the Drenazhnik series from the Jileks manufacturer will do. These are centrifugal pump models that will allow you to combine a bathroom with sewerage minimal investment.

Nuances of operation

The pumps in question are designed to provide a favorable sanitary atmosphere in a private home. But the equipment itself will need periodic maintenance during operation. Manufacturers recommend once a month or six months (depending on the model) to carry out a comprehensive check of the unit, its tightness, the quality of the connections and the integrity of the case. If surface pumps are used to pump out the sewage system in a private house, then there will be no problems with maintenance at all. Special preparation for the revision may be required only in the case of submersible modifications, which will have to be lifted from the waste container, cleaned and, after a preventive inspection, made a new installation.

Conclusion

There are different configurations of the sewerage system device for a private house. And not all of them provide for the inclusion of special pumping means into the infrastructure. Depending on the parameters of the site and plumbing communications, there may be a possibility of natural drainage. Of course, this function can be provided either by a septic tank or by direct access to the central drainage line. If this is not possible, then household pumps for pumping out the sewage system will significantly increase the efficiency of the channel. Especially if the design of the equipment will have an impeller with cutting and grinding bodies. Combining the functions of such a unit and a tank with biological treatment will remove the problems of pollution and disposal of household waste.

A sump pump is a device for pumping contaminated or clean liquid. Drainage pumps are placed at the bottom of a tank or gutter.

Drainage pumps are used for:

• supplying liquids or pumping from tanks and land,
• irrigation and watering,
• pumping water from various flooded objects,
• drainage of ground or storm water.

How to choose

The drain pump is often the wrong choice. The equipment will not cope or stand idle, and the engine will work with overload or idle. With an illiterate choice, a failure of working processes and failure is possible.

Drainage pump specifications:

• Performance is the volume of water that the device is capable of pumping over a certain time.
• Pressure- shows the maximum distance to which water is pumped, or the height of the liquid rise. It is necessary to take into account the head loss depending on the distance of the pipeline.
• Permissible particle size, which can be missed by the working chamber of the device.
• Water temperature mostly should not be higher than 35-40 degrees.
• Water intake level- some models have a minimum liquid intake level of 2 mm, that is, they are able to pump out almost all of it.
• Casing and impellers of drainage pumps usually made of high strength polymer or cast iron and stainless steel.
• Outlet diameter the pump is selected depending on the degree of contamination of the liquid in order to achieve the most efficient operation.

It is recommended to install mesh filters in front of the impeller to protect the working elements from the ingress of large particles. If the fluid to be transported is heavily contaminated, submersible fecal pumps can be used. They are equipped with shredders, which, with the help of blades, eliminate large impurities. Taking into account all of the above factors submersible pumps will be operated more efficiently. In this way, you can select the model that best suits the required conditions.

Great luck if the house in the private sector is connected to the central sewerage system. But, basically, there is no such possibility and each owner arranges the sewer system on his own. From time to time you have to use the services of a sewer truck, the price of which is not so low. Buying a household pump for pumping out sewage is perhaps the best way out.

How is the sewage pumping performed?

The pumping is performed by a pump, but the type of pump for pumping out the sewage system is selected according to the indicator of its contamination. In one case, drainage is suitable, in the other - fecal. It is easy to confuse them visually, but they do not perform the same functions and their design is slightly different.

Drainage pumps

Apply:

• where the water is not contaminated with solid elements larger than 5 cm;
• if there is only water from the washing machine or dishwasher in the drain pit;
• flooded the basement.

Fecal pump

Where it is useless to use a drain pump, fecal matter is used. He is able to pump out a very contaminated liquid. Solid particles up to 8 cm will pass through it. The flow channels are larger than those of the first.

There are models that can grind and pump out household waste, the size of which exceeds 8 cm. For this they have a special addition. The pump for pumping out the sewage system, the photo of which is below, is just that. There is an impeller and a chopper knife, in a word.

When assigning pumps to certain types the fact of the presence or absence of a grinder is taken into account, how it is installed, at what temperature the apparatus operates, its design.

Basically, fecal pumps are divided into

1. Pumps that pump out cold waste water without a grinder. They are the cheapest, pump out clean water with a temperature of no higher than 40 degrees, they are used in case of flooding of the basement or for the pool.

2. Pumps that pump out hot waste without a chopping mechanism. They work with dirty hot water without solids. They are used in baths and saunas, when moving a bathroom or kitchen to another point in the apartment as a result of redevelopment.

3. The most popular pump. Most often, in everyday life, you have to pump out cold drains from the toilet. Hair, pieces of paper, and hygiene items go there. Therefore, a device with a chopper is ideal. Another plus is that if you bring it to the toilet, then the pipes can be small in diameter, since all waste is well crushed.

4. A pump for pumping out the sewage system, which is similar to the previous one, but pumps out hot sewage. Suitable if your bath has a toilet.

Classification of faecal pumps according to the method of their installation

Outer

It is placed near the septic tank, and the hoses, which are called intake hoses, are lowered down. He cannot grind solid inclusions due to the lack of an appropriate mechanism, therefore, dirty water with solid particles is not for him.

Submersible

Such a pump for pumping out the sewage system completely goes into the drains. In the pit, it must be somehow fixed, therefore, special devices are used in the form of guides and an angular outlet. There is a little trouble with it: once you lower it, you can not raise it. There will be only a remote control on the surface. Equipment from different manufacturers is designed for different immersion depths. Knowing the depth of your septic tank, you can choose the most suitable option.

High requirements are imposed on the materials from which submersible pumps are made, since the environment where they will be located is aggressive. The main thing:

• high strength;
• the ability to effectively resist corrosion.

Semi-submersible

It is not completely immersed in the drains: only the pumping part is in the liquid, and the engine is outside. The part that is immersed is fixed by means of a float, it holds the body on the surface. The shredder is not provided in this equipment. Therefore, it cannot be applied everywhere.

Model selection

Before purchasing the equipment, you need to decide which type of pump will be the best for you. It is good to know that among the variety of models from different firms there are similar ones. Often they are only distinguished by the price. In deciding the question of choosing a pump for pumping out the sewage system, a video on this topic can be very useful. After all, what is better? See once than hear 100 times.

What to look for when choosing an option?

First of all, you need to look at:

• body material and main elements. It will ensure long-term operation of the pump in an aggressive environment. It is better to choose plastic, stainless steel or cast iron - they are the most resistant;
• impeller. How well solids are crushed depends on its design. Knives will provide greater productivity than the cutting edge. There are models with self-cleaning of the grinder;
• performance. It is not always directly proportional to power. It happens that the equipment is less powerful, capable of pumping the same amount of wastewater as a strong pump, and consumes less electricity. There is also a minus - it wears out more intensively;
• way of control. It is easier to operate a device with buttons in a convenient place.

Top manufacturers

Foreign manufacturers produce pumps for pumping out sewage, the price of which does not go against the quality. They differ:

• small dimensions;
• ease of use;
• so that they can serve as a base for the creation of small sewer installations.

Among the best:

Grundfos company (GRUNDFOS);

Nocchi (NIGHTS);

Pedrollo (Redrolo).

Russian manufacturers also produce high-quality submersible pumps for pumping out sewers. Their main advantages:

• they are cheaper than foreign ones;
• service centers cooperate with manufacturers. Therefore, spare parts arrive instantly;
• at the request of the buyer, more complex automation can be mounted;
• no cooling problems: there is a cooling jacket.

For example, high-quality pumps are produced by the Omsk Vzlyot plant.

Ecology of consumption. Manor: It is not always possible to equip a gravity sewer in a private house. Then, to remove fecal waste from the cottage, sewer pumps have to be installed, creating a forced pumping system. There are several varieties of them with various features installation and operation. Plus, you can find a huge number of different models of these devices on sale.

It is not always possible to equip a gravity sewer in a private house. Then, to remove fecal waste from the cottage, sewer pumps have to be installed, creating a forced pumping system. There are several varieties of them with different installation and operation features. Plus, you can find a huge number of different models of these devices on sale.

Hydraulic pump in a forced sewer system

In order to correctly select a pump, it is necessary to understand all its modifications and take into account many factors.

Most often, the sewage system is designed so that the drains in it move by gravity. But not always a local septic tank or entry into a centralized sewage system is located below the sewer pipeline and all plumbing devices in the house. And the waste water itself cannot rise upward, you have to “force” it with a pump.

Pumping equipment is installed when, due to the relief or other features of the adjacent area, external sewer pipes cannot be laid under the desired slope. It is also possible the option with the completion or redevelopment of the building. The configuration of internal pipelines and the volume of drains are changing, the latter can no longer be removed from the residential building on their own.

The task of the forced sewage pump is to pump out domestic wastewater and stimulate their movement to the street collector, which is located above the storage or treatment plant

The most popular version of the sewage system with forced pumping of wastewater provides for the device in the basement of the cottage of an intermediate storage. As it is filled to the brim, the pump turns on, pumping the liquid out into the street for further cleaning or removal. But you can also install a compact pump unit, which turns on only when the waste is drained. However, if it breaks down, the house will actually be left without a sewer.

Compared to a gravity system, the use of pressure pumps offers a number of advantages:

The frequency of pipeline cleaning is reduced, since the intensive movement of wastewater contributes to their self-cleaning.

Sanitary and household appliances with a connection to the sewage system, it can already be installed anywhere without taking into account the need to form a slope towards the sewer outlet, and then the storage or septic tank.

According to the technical regulations (SNiP numbered 2.04.03-85), the smallest diameter of the pipes of the external main of the pressure sewer network is taken to be 150 mm, if a general-alloy drainage is arranged. These are networks that transport storm water together with household black and gray ones. Household gravity systems are arranged from a pipe of the same size.

If fecal wastewater is discharged separately, the diameter of the pipeline is assumed to be filled to 0.7 of its maximum height. This distance is necessary for ventilation and the possibility of evacuating unpleasant and explosive gases. The size of the sewer pipeline must be taken into account when choosing a pump in order to accurately select the unit for the impending load.

A coercive system is volatile and costs more money than a gravity system. If the family is small, then the accumulator does not fill up immediately, the sewer pump will be enough to turn on from time to time. But with large volumes of wastewater, pumping equipment must work almost constantly. In this case, serious problems can arise in the event of a power outage.

Most of the cost of a sewage pump can be recouped by using cheaper and thinner pipes, as well as reducing the cost of their installation. But after installation, this equipment needs constant maintenance, which requires a certain amount of money. And if you add here an uninterruptible power supply in case of a power failure, then the benefit is zero.

For the device of a forced sewage system of a small private house or summer cottage, which removes a mixture of black and gray effluents, a fecal pump is suitable. It will cope with the pumping of water from the combined sewerage system

If it is possible to do with a gravity sewer option, then it is worth doing it. A pressure system with a sewage pump for viscous and contaminated liquids should only be selected as a last resort. And special attention should be paid to the competent choice of pumping equipment.

Types of pumps for pressure sewerage

The most important thing in choosing pumping equipment for pumping sewage is to clearly separate it from the drainage and water-lifting varieties of these devices for drinking wells. The last two options are designed exclusively for pumping clean water or water with fine suspended suspensions. If harder feces or debris gets inside, they will simply break.

The range of sewage pumps is quite extensive, but the whole variety of this equipment can be divided into three classes: submersible, semi-submersible and external

A special sewage pump is designed specifically for pumping sewage with all household waste that falls into the drain from sinks, toilets, dishwashers and washing machines... Moreover, the most optimal choice here is pumping equipment with a grinder that grinds up all the debris before it gets inside the pumping unit.

In general, faecal pumps are used for:

pumping sewage in sewer networks with forced current;

pumping out sludge from cesspools, septic tanks and pits of street toilets;

pumping water from basements and cellars;

cleaning sewer pipes and wells from silt sediment.

Standard drain pump it will not be possible to perform these works. Its impellers will quickly clog, and then the electric motor will overheat due to the sharply increased loads.

Type No. 1: Submersible devices

This type of pump is immersed with the whole body directly into the sewer. All elements of their structure are made of stainless steel or cast iron, so that in contact with an active and aggressive environment, they do not immediately fail.

The submersible sewage pump is installed on the bottom of the tank or suspended directly above it on a rope

Usually this pumping equipment works automatically. When the reservoir is filled with drains, a float rises with them, which, at a certain liquid level, turns on the pumping unit. As soon as the container is empty, the pump is switched off with a float switch. Dry work is practically excluded.

Submersible models are chosen for their high performance and equipped with a chopper. The cutting mechanism of the latter grinds any large waste to a size that does not pose a threat to the pumping equipment. Almost all submersible sewage pumps come with an integrated grinder, whose rotating blades easily handle paper, fibrous objects and solids.

Type # 2: Surface Models

Surface pumps for pumping out the sewage system are installed next to the collector that collects and redirects wastewater, or in the most convenient inspection well for its placement. This is the so-called dry mounting option. Often they are also called forced sewer pumping units due to the presence of several separate parts assembled together.

In this case, contaminated waste water is sucked in through a hose connected to the pump unit, which goes down to the bottom of the storage tank. When choosing this model, special attention should be paid to the parameters of the suction depth specified by the manufacturer. Usually it is up to 8-10 meters, from great depths it simply cannot raise wastewater from the storage tank. In this case, one should take into account not only the height of the container, but also the distance from it to the pump.

Surface pumping equipment is easier to maintain, it can be quickly dismantled and washed in a utility room without any problems

The low-power surface pump for forced sewer operation is a compact unit that is simply installed next to the waste storage tank. Installation of more powerful models is carried out in a specially prepared place with a reliable fixation of the device to the floor.

It is imperative when installing an outdoor pump to be concerned about protecting it from moisture. Unlike the submersible analog, it is fundamentally not intended for operation in a humid environment. Its body has a minimum protection against water, if it gets inside, a short circuit can occur.

The surface pump is inexpensive and easy to operate, but quite noisy. For installation in a basement or heated utility room, it is best to use it. However, if it will be necessary to turn on the equipment only from time to time to pump out the septic tank, then it is better to prefer the submersible option.

Type No. 3: Semi-submersible plants

These models are a kind of intermediate option between submersible and external pumping equipment. They have an electric motor installed next to a container above the water, and the working chamber is immersed in the sewer. Between themselves, these two parts of a single unit are connected by a rotating shaft.

Installation of a semi-submersible pump can be done on:

a pillow floating on the surface of the drains;

platform next to the container;

tank wall.

Initially, the standard semi-submersible equipment comes without a chopper. It can be installed only in the form of an additional nozzle, which complicates the maintenance of this pumping equipment and leads to its rise in cost.

Because of design features semi-submersible pumps are rarely used in domestic conditions, this is more an option for industrial applications and large pumping stations

Type No. 4: Small units for pumping waste water from plumbing

A sewage pump for a toilet or washbasin refers to small-sized equipment installed next to plumbing fixtures. The effluent from the latter first falls into a small tank, and from it is already pumped out into the general sewage system.

A household sewage pump is a direct analogue of a pump in washing machine, only it is installed for toilets, bathtubs and sinks

Such equipment is quite expensive, but it allows you to install plumbing in any convenient place. The pump, when filling the sanitary tank, will pump out the sewage into the riser, even if the outlet to it is inclined upwards.

These systems require virtually no maintenance. Self-cleaning of the storage tank is structurally incorporated in them. And in order to exclude the appearance of unpleasant amber, a charcoal filter is provided inside. You don't need special skills to connect this pump, you just need to remember to wash the drive from time to time.

Which is better: submersible vs surface

With the same outlet head, a submersible sewage pump consumes less power than its external self-priming counterpart. The former simply does not have to waste energy on sucking wastewater from the bottom of the container to the working chamber. All the power of the electric motor is spent on creating pressure in the pressure line.

A pump completely submerged in drains produces an order of magnitude less noise than a pump installed on the surface. Water absorbs most of the sounds emitted by the electric motor and rotating pump elements.

Surface equipment is noisier than equipment submerged in a sewer tank, which is cooled by the liquid around

For ease of use, the palm can be given to the surface model, but only if it is compact and portable. Plus, the correctness of its operation can be controlled simply by the noise emitted. If the electric motor does not work correctly, extraneous sounds appear, immediately indicating problems.

All other things being equal and additional equipment, the surface pumping station will almost always be cheaper than a submersible sewage pump. Of course, a lot depends on the manufacturer and the competition in a particular region. However, technology immersed in sewage is by definition more technologically advanced and more complex, which determines its higher price.

How to choose pumping equipment correctly

When choosing a pump for pumping out the sewage system, you need to pay attention to the many indicated in his passport technical characteristics... For example, performance parameters can help you estimate the time it takes for a waste tank to be emptied. The higher this indicator, the more the unit will be able to pump liquids, but also the more energy it consumes for this. There are also many other nuances.

The first factor is the maximum head and lifting height.

The pressure indicator determines the height to which the sewage pump can lift the wastewater through the pressure line. But here it is important to understand that in addition to the vertical, there is also a horizontal section of the branch pipe. Simplistically, to calculate this parameter, the horizontal distance is divided by ten and added to the vertical footage from the pump to the edge of the container.

However, such a calculation is very simplified, if everything is done according to the rules, then you need to take into account:

composition and temperature of the liquid, as well as the size of impurities in it;

the level of roughness of all pipes (material of their manufacture);

pressure loss when passing through valves;

diameter of pipelines;

Atmosphere pressure;

the speed of movement of drains and much more.

All this should be taken into account in the sewer system design, which can only be done correctly by a highly qualified engineer. If there is no relevant knowledge, then one cannot do without consultations. Or you will have to take a pump for pumping out sewage with a large margin of power and pressure, otherwise it will not work properly for a long time.

The second factor is operating temperature

All pumping equipment for household sewers is divided into two categories:

For cold drains - with an operating temperature of up to 450C.

For hot drains - with an operating temperature of up to 900C

If only cold water, then it is better to take the first option, which is cheaper. In most cases, these are the pumps that are installed in cottages. In fact, boiling water can enter the sewer of a private house only during emergency discharges from the heating system.

The third factor is the availability of automation

It is problematic to control the operation of the sewer pump manually, constantly turning it on and off. It will be necessary to be constantly near the equipment. It is much better if the pumping equipment kit includes:

Float - determining the level of drains in the storage tank to start and shut down the equipment.

Thermal relay - triggered when the temperature of the electric motor is too high to turn it off before overheating.

To reduce the likelihood of clogging of a sewer pump with a built-in grinder, some manufacturers provide for a self-cleaning of its cutter mechanism. This makes it possible to extend the periods of operation of the unit without interruptions and shutdowns for maintenance. Spontaneous cleaning ensures that the possibility of overheating of the drive is reduced.

The degree of grinding of the waste found in the wastewater directly depends on the structure of the impeller of the grinder - it is higher for knives than at the cutting edge

The fourth factor is power supply and case material

Various models of sewage pumps can be powered from single-phase and three-phase power networks. The first option is cheaper and preferable in the conditions of domestic reality, so in case of voltage problems, it can be connected through a stabilizer or simply connected to a portable generator.

For three-phase pumping equipment, you will have to purchase additional control panels in order to protect it from phase imbalance in electrical network... And this is additional money and difficulties in connection.

A compromise between cost and reliability can be considered equipment with a plastic case, but metal working elements.

The most reliable pumps for pumping out sewage are pumps, in which both the body and the working part are made of metal. It can be cast iron or stainless steel. Plastic counterparts are cheaper, but in an aggressive environment they will last less without repair. published