How to choose an autonomous sewer system for a private house - detailed instructions

Today, the most effective solution for treating domestic wastewater is biological stations. If it is impossible to connect to a centralized sewer system, an autonomous one is installed. This is an excellent solution for people who do not want to part with the comfort, as well as for those who want to have their own, safe and comfortable sewage treatment facility and not have to worry about the unpleasant smell. The popularity of the method cannot be denied: large and small families are happy to install their own autonomous sewage system in their private home. We have compiled for you a rating of popular autonomous sewers for the home. Autonomous sewerage is a complex equipment that receives wastewater from the house, processes it and discharges it into the ground or drainage systems. This rating will help you determine which autonomous sewer system is best for you.

• Professional installation of turnkey autonomous sewerage.
• Free visit of a specialist and selection of equipment.
• Supervised installation - from 7,875 rubles. Installation - from 16,000 rubles.
• All equipment is always available in our warehouse; we are official dealers of all well-known manufacturers.
• Warranty for equipment and work.
• Installment plan without overpayments.
• Free storage.

The most popular manufacturers of autonomous cleaning stations on the Russian market are:

Sewerage GREENLOS

Sewerage GREENLOS

— new
installations from a Russian trading and manufacturing enterprise.
GREENLOS installations
were created by experts in the field of sewerage,
due to this, all the shortcomings of competitors were taken into account. Particular attention in production is paid to the use of modern advanced materials to prevent the station from squeezing and floating even in conditions of high groundwater.

Another distinctive advantage of GREENLOS septic tanks is the modern design of the GREENLOS body

making
the installation process easier and cheaper,
and
minimizing
the need for station maintenance.

Sewerage GRINLOS has a wide range of products for any objects and various soils. The range includes volatile and non-volatile series with different capacities, gravity and forced models with standard and low housing. Modular stations for servicing groups of cottages, commercial or industrial facilities.

Also in the GREENLOS assortment there are caissons made of monolithic polypropylene 8mm thick (for use in areas with any hydrological conditions) and plastic cellars intended for use in household (food storage - vegetables, pickles and household supplies).

Advantages

• High structural strength due to the cylindrical body and the use of the most modern materials.
• Simplicity and cheaper installation.
• Low operating costs – infrequent maintenance;
• All LOS GREENLOS have ISO 9001 certificates and have also successfully passed quality and safety examinations.
• Service life of 50 years due to the use of thick and high-quality polypropylene

Popular GREENLOS models

Autonomous sewage system GREENLOS Aqua 3

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 180 l
• Inset depth 60 cm

Price: 93 510

R.
–10%
Autonomous sewage system GREENLOS Aqua 3 low building Pr

• Number of users 3
• Productivity 0.6 m3/day
• Salvo discharge 230 l
• Inset depth 60 cm

Price: 103 500

R.
–10%
Autonomous sewage system GREENLOS Aqua 5 Pr

• Number of users 5
• Capacity 1 m3/day
• Salvo release 350 l
• Inset depth 60 cm

Price: 109 170

R.
–10%
Autonomous sewage system GREENLOS Aero 5

• Number of users 5
• Capacity 1 m3/day
• Salvo discharge 300 l
• Inset depth 60 cm

Price: 108 630

R.
–10%
Autonomous sewage system GREENLOS Aqua 8

• Number of users 8
• Capacity 1.4 m3/day
• Salvo release 400 l
• Inset depth 60 cm

Price: 126 900

R.
–10%
Autonomous sewage system GREENLOS Storage tank 10

• Number of users 10
• Capacity 2 m3/day
• Salvo discharge 560 l
• Inset depth 60 cm

Price: 113 400

R.
–10%

Video description

This video will help you get acquainted with this design in more detail:
Microorganisms in the backfill process the organic components of sewage. This releases water, volatile and carbon dioxide. At the end of the process, the clarified liquid is discharged into the ground or used for economic purposes.

Now it’s clear what this biological local sewerage system is. It should also be noted that it cleans wastewater 20% more efficiently compared to a conventional septic tank. In addition, people will come to order a sewer truck less often.

Another advantage of a septic tank with a biofilter is the ability to avoid using large containers where wastewater will settle. After all, such a structure uses aerobic bacteria. They speed up the cleaning process. Therefore, septic tanks with a biological filter are mini treatment facilities for a private home.

Sewerage Topas

Topas has long become a familiar name in the lists of leading manufacturers of autonomous sewage systems. Are released. They have their own on-line support and post-warranty service. They often provide discounts, and the cost starts from 71,000 rubles for 4 people. The range is very wide, for various houses to cottage villages.

They are characterized by low energy consumption. They have a wastewater treatment rate of 98%.

Thanks to the equipment installed in them, stations (septic tanks) effectively neutralize odors, show good performance and highly effective filtration. Reliable case.

Very popular septic tanks, good service, trouble-free repairs, ease of operation and low maintenance requirements. Equipped with compressors. One compressor is a cheaper model with the letter “C”. All classic models do not contain such a letter in the name and have 2 compressors. Can be connected to pipes at a depth of more than 1.5 meters. Topas models can be supplemented with a grease trap, solenoid valve, and ultraviolet post-treatment unit to make it possible to discharge the treated wastewater into water bodies.

The company’s product range also includes the Topaero line - installations that accept an increased volume of salvo discharge. Convenient to use when installing an autonomous sewer system for several houses.

Advantages

• The wastewater is 98% purified, so the water is safe for animals and plants;
• No unpleasant odor and noiselessness;
• Possibility of installation in any type of soil;
• Low maintenance requirements and service life of Topas is at least 50 years;
• Wide range of Topas models;
• Space saving - Topas does not take up much space.

Popular Topas models

Autonomous sewage system TOPAS 4

• Number of users 4
• Productivity 0.8 m3/day
• Salvo release 175 l
• Inset depth 40 - 85 cm

Price: 98 730

R.
–10%
Autonomous sewage system TOPAS 4 Pr

• Number of users 4
• Productivity 0.8 m3/day
• Salvo release 175 l
• Inset depth 40 - 85 cm

Price: 111 510

R.
–10%
Autonomous sewage system TOPAS 5

• Number of users 5
• Capacity 1 m3/day
• Salvo discharge 220 l
• Inset depth 40 - 90 cm

Price: 117 810

R.
–10%
Autonomous sewage system TOPAS 6

• Number of users 6
• Capacity 1.15 m3/day
• Salvo release 250 l
• Inset depth 40 - 95 cm

Price: 120 330

R.
–10%
Autonomous sewage system TOPAS 8

• Number of users 8
• Capacity 1.5 m3/day
• Salvo release 440 l
• Inset depth 40 - 95 cm

Price: 141 210

R.
–10%
Autonomous sewage system TOPAS 10

• Number of users 10
• Capacity 2 m3/day
• Salvo discharge 760 l
• Inset depth 40 - 95 cm

Price: 187 470

R.
–10%

About the benefits

Using septic tanks for your home without pumping, which you can order in our store, has the following advantages:

• When installing the system on a summer cottage or near a private country house, elements for soil post-treatment of wastewater are not needed. This simplifies installation work;
• the cleaning system will not be a source of unpleasant odors;
• there is no need to regularly call a vacuum cleaner to pump out waste;
• the soil is not polluted when using such equipment.

Sewerage Unilos-Astra

Unilos Astra - stations that provide real comfort to their users and have achieved almost 100% cleaning level. Are being produced. They combine two types of cleaning - mechanical and biological. Designed for long-term operation. They undergo a very thorough inspection before sale. Autonomous sewage system Unilos is well adapted for operation in Russian conditions. They have good reviews from users who have already purchased them.

Also a very good indicator of the strength of the case is the walls and partitions made of polypropylene, with a minimum thickness of 20 mm. Among the design features is the ability to be equipped with a post-treatment unit and a built-in sewage pumping station (SPS). Thanks to this, the output is the purest process water possible.

The stations are represented by a wide range of models. Depending on the modification, they vary depending on the pipeline length and burial depth. Insulated models are produced for cold climate zones.

Prices for stations from this manufacturer start from 62,000 rubles.

Advantages

• Deep biological wastewater treatment - 98%;
• Sealed housing that does not allow unpleasant odors to pass through;
• Silent operation of the station;
• Automatic operation of the station, which does not require constant monitoring;
• Durable, water-permeable body, no corrosion;
• Durability and reliability - service life of 50 years.

Popular models Unilos Astra

Autonomous sewage system Astra 3

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 150 l
• Inset depth 45 - 60 cm

Price: 86 400

R.
–10%
Autonomous sewage system Astra 5

• Number of users 5
• Capacity 1 m3/day
• Salvo release 250 l
• Inset depth 45 - 85 cm

Price: 108 450

R.
–10%
Autonomous sewage system Astra 5 Long

• Number of users 5
• Capacity 1 m3/day
• Salvo release 250 l
• Inset depth 101 - 150 cm

Price: 128 970

R.
–10%
Autonomous sewage system Astra 7 PR

• Number of users 7
• Capacity 1.4 m3/day
• Salvo discharge 300 l
• Inset depth 45 - 85 cm

Price: 126 900

R.
–10%
Autonomous sewage system Astra 8

• Number of users 8
• Capacity 1.6 m3/day
• Salvo release 350 l
• Inset depth 45 - 85 cm

Price: 130 320

R.
–10%
Autonomous sewage system Astra 10

• Number of users 10
• Capacity 2 m3/day
• Salvo release 550 l
• Inset depth 45 - 85 cm

Price: 174 060

R.
–10%

Price Eurolos Bio

Biological treatment stations are in practice easier to operate, but require an electrical connection and somewhat more frequent maintenance work. If there is a stable power supply, this is the preferred option for a summer residence.

Sewerage Volgar

Volgar - deep wastewater treatment stations that meet all consumer requirements. Autonomous sewers Volgar are used for wastewater treatment, both for country houses and for other buildings for various purposes. Septic tanks work in all types of soil and in all climatic conditions. All structural elements are made of homogeneous polypropylene, which avoids corrosion. The cost of autonomous Volgar stations starts from 58,050 rubles for 3 people.

You can choose a Volgar septic tank with forced or gravity drainage of purified water. Options for water drainage depend on the type of soil at the installation site, as well as on the location relative to residential buildings, wells, sanitary protection zones and specially protected objects. Gravity drainage of water is recommended in soils such as sand and sandy loam. Forced drainage – in loam, clay.

Volgar autonomous sewers are suitable for year-round use. The stations purify water by 98%. Clean water can be used for irrigation and is safe for animals. Energy consumption is also reduced since only one compressor is required. Volgar autonomous sewers are compact, do not require high maintenance costs and are affordable.

Advantages

• The wastewater treatment rate reaches 98%;
• Suitable for any type of soil and climate conditions;
• The durable cylindrical body is not afraid of soil pressure;
• Small size, compactness of the station;
• Does not smell even close up due to the tightness of the case;
• Easy to install and maintain the station;
• Long service life - at least 50 years.

Popular Volgar models

Autonomous sewerage system Volgar 3 2030 C

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 190 l

Price: 92 700

R.
–10%
Autonomous sewerage Volgar GARDA 3 2200 C

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 180 l

Price: 84 600

R.
–10%
Autonomous sewerage Volgar GARDA 4 2400 C

• Number of users 4
• Productivity 0.8 m3/day
• Salvo discharge 210 l

Price: 88 830

R.
–10%
Autonomous sewerage Volgar 5 2360 C

• Number of users 5
• Capacity 1 m3/day
• Salvo release 280 l

Price: 100 800

R.
–10%
Autonomous sewerage Volgar 8 2360 C

• Number of users 8
• Capacity 1.6 m3/day
• Salvo discharge 520 l

Price: 124 560

R.
–10%
Autonomous sewerage Volgar 10 2360 C

• Number of users 10
• Capacity 2 m3/day
• Salvo release 690 l

Price: 153 900

R.
–10%

Conclusion

A properly organized drainage system and an optimally selected septic tank will be the key to a comfortable life for everyone who is used to living in their own private home, cottage or dacha.

Modern models allow you to set up a convenient, autonomous, and, most importantly, reliable sewerage system that will work effectively for many years without repairs or additional costs.

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Sewerage Alta Bio

Alta Bio autonomous sewage systems are compact, safe and durable wastewater treatment plants, manufactured by Alta Group. Thanks to multi-stage purification, the output water is clear and has no unpleasant odor, and it can also be reused. The stations are not subject to corrosion, as they are made of polypropylene or polyethylene with a body thickness of 8 mm. The big advantage is that Alta Bio septic tanks do not require preservation for the winter; you just need to turn off the power supply.

Alta Bio septic tanks have different models that are designed for different numbers of people. Options for any type of soil are also presented. Alta Bio + models are designed for clay soils with high groundwater levels. Alta Bio models without markings are installed in sandy soil.

Prices for septic tanks start from 74,000 rubles. The stations are designed for long-term operation, since the service life of the Alta Bio autonomous sewage system is 50 years.

Advantages

• High level of wastewater purification - 98%, thanks to the passage of wastewater through three settling tanks;
• Non-volatility – if there is a power outage, Alta Bio will continue to work automatically;
• It is possible to enable additional UV cleaning;
• Household waste does not affect the operation of the Alta Bio station;
• The appearance of unpleasant odors is excluded;
• Service life – 60 years.

Popular Alta Bio models

Autonomous sewage system Alta Bio 3

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 120 l

Price: 98 500

R.

Autonomous sewage system Alta Bio 3 +

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 120 l

Price: 130 000

R.

Autonomous sewage system Alta Bio 5

• Number of users 5
• Capacity 1 m3/day
• Salvo discharge 210 l

Price: 127 000

R.

Autonomous sewage system Alta Bio 5 + OR

• Number of users 5
• Capacity 1 m3/day
• Salvo discharge 210 l

Price: 159 000

R.

Autonomous sewage system Alta Bio 5 Low

• Number of users 5
• Capacity 1 m3/day
• Salvo discharge 210 l

Price: 127 000

R.

Autonomous sewage system Alta Bio 7

• Number of users 7
• Capacity 1.4 m3/day
• Salvo release 270 l

Price: 155 000

R.

Video description

One of the options for using concrete rings when constructing a septic tank is described in the following video:

Septic tank with biological filter

Such local treatment facilities for a private home allow you to effectively treat sewage. The standard tank design has three compartments. In the first of them, sewage from the house is kept for at least 3 days. Therefore, this chamber must have an appropriate volume.

In the first compartment, suspended particles settle to the bottom. When the chamber is full, the clarified liquid moves to the next compartment. In this case, in the first part of the structure, a crust of light particles of fat and feces forms on the surface. They also gradually settle to the bottom.

In the second chamber, sewage is mixed less than in the first compartment, into which wastewater constantly flows from the house. For this reason, a crust of light fractions does not form on the surface. The second chamber is designed to collect the smallest solid particles from the wastewater at the bottom.

The third container is a biological filter. Peat and/or expanded clay are used to make it. Aerobic bacteria live in such backfill. Instead of expanded clay, crushed plastic is also used.

ERGOBOX sewerage

Ergobox stations are modern autonomous sewer systems that are ideal for a country house. – manufacturer of these stations. The septic tank provides deep wastewater treatment - 98%. The weight of the equipment does not exceed 150 kg. The sealed polyethylene body without seams is very durable and does not undergo deformation.

Autonomous sewers are available in two versions: with gravity and with forced drainage. Gravity discharge septic tanks are designed for areas with normal groundwater levels. Forced release stations are used for areas with high groundwater levels.

The cost of Ergobox stations starts from 58,900 rubles. The septic tank is easy to use and has a service life of 50 years. Ergobox autonomous sewers are durable, high-performance and undemanding in operation.

Advantages

• Multi-stage wastewater treatment – ​​98%;
• Lack of sewer odors due to the high degree of tightness of the housing;
• Invulnerability to corrosion due to the high-quality material of the Ergobox station;
• Reliable retention of the Ergobox station in the ground;
• Ergobox is suitable for any type of soil on the site;
• Long service life - 50 years or more.

Popular ERGOBOX models

Autonomous sewage system ERGOBOX 3 PR

• Number of users 3
• Productivity 0.6 m3/day
• Salvo release 180 l
• Inset depth 90 cm

Price: 81 600

R.

Autonomous sewage system ERGOBOX 4 S

• Number of users 4
• Productivity 0.8 m3/day
• Salvo discharge 220 l
• Inset depth 90 cm

Price: 79 900

R.

Autonomous sewage system ERGOBOX 4 PR

• Number of users 4
• Productivity 0.8 m3/day
• Salvo discharge 220 l
• Inset depth 90 cm

Price: 86 900

R.

Autonomous sewage system ERGOBOX 6 S

• Number of users 6
• Productivity 1.2 m3/day
• Salvo discharge 300 l
• Inset depth 90 cm

Price: 93 900

R.

Autonomous sewage system ERGOBOX 8 S

• Number of users 8
• Capacity 1.6 m3/day
• Salvo release 450 l
• Inset depth 90 cm

Price: 111 100

R.

Autonomous sewage system ERGOBOX 10 S

• Number of users 10
• Capacity 1.9 m3/day
• Salvo release 550 l
• Inset depth 90 cm

Price: 127 900

R.

Selection of sewer station (septic tank)

Rating of the most popular KNS models for 2021

1. SAR 550-ZDm 1AR-E Italian brand Pedrollo
2. SAR 550-TOP 5 Pedrollo
3. SAR 250-RXm 5 Pedrollo
4. SAR 40-RXm 2 Pedrollo
5. SANICUBIC 2 GR SE4 T of the French brand "SFA Group"
6. SAR 100-TOP 2 Pedrollo
7. ATSGJ-800 (800 W) JEMIX
8. DAB FEKABOX 200
9. Kronwerk KPS650 (650 W)
10. Tallas D-ECONCEPT (1000 W)
11. DAB BOOSTER SILENT 3 M (800 W)
12. SANICUBIC 1 VX (2000 W) « SFA Group»
13. GrundfosLiftaway B for pumping equipment series AP 12.40
14. Grundfos CMBE TWIN 3-30 with terminal block (1100 W)
15. SAR 550-RXm3 Pedrollo

Why professional installation of autonomous sewerage?

Installation of an autonomous sewer system itself is simple and does not require large expenses, but equipment and skills are required. An installation error can lead to very high costs in the future. And most importantly, there is no warranty when installing it yourself.

Stages of work:

1. Mark a place in the ground, dig a pit and prepare everything for further pipe laying;
2. Install a septic tank;
3. Connect to the pipe system, hermetically sealing the entry and exit points from the station;
4. Backfill the pit and trenches. When filling the pit, fill the station with water;
5. Install and connect the pump and compressor;
6. Connect to the electrical network;
7. Put the sewerage station into operation.

To save money, you can complete the first, second and fourth points yourself by studying the technical data sheet of the treatment plant, and order installation supervision, direct installation of the station and its connection. But be prepared that you will have to read a lot, study the site and design a drainage system, dig a hole of the required size, prepare a trench for the pipeline, order sand, etc. equipment. It is necessary to comply with all SNiP standards and remember the rules for laying water supply and sewer pipes.

The service life of septic tanks is more than 50 years, and only competently carried out work guarantees operation during this time. Therefore, an autonomous sewerage system with turnkey installation is a more profitable solution than self-installation. Professional engineers are familiar with all the nuances of working with wastewater treatment plants, in different types of soil and in different areas. We also recommend purchasing the station and ordering its installation only from official dealers of the manufacturers.

Turnkey autonomous sewerage from the PORT company is a guarantee of professional installation and assistance at all stages of purchase and installation.

Sewer maintenance

Further maintenance is quite simple. Regular cleaning is important

– according to manufacturers’ passports, but
at least once a year
. During the warranty period - strictly according to the passport. It is necessary to periodically measure the concentration of sludge and remove it. It is worth monitoring the appearance of solids inside and traces of corrosion.

The operation of the compressor also needs to be checked at least once every 3 years.

If you have concerns about the operation of the septic tank, or the alarm has gone off, you should call specialists.

A one-time station maintenance visit includes:

• Diagnostics of the operation of the sewerage station;
• Pumping out excess sludge and solids;
• Cleaning the station inside: filters, pumps, hair trap, grease trap;
• Cleaning air duct nozzles;
• Washing the interior walls.

Service and support

365 days a year!

from 5,000 rubles

20% discount

For annual maintenance upon signing a contract on the day of installation!

Standards for the location of treatment facilities on the site

There is a lot of confusion in this area. There are many conflicting standards with different distances, and these standards may differ in different regions, so you need to find out exactly from the local plumbing department. The most common standards can be grouped:

• From the house: to the septic tank - at least 5 m;
• filter device (absorption well, sand and gravel filter, filter trench) - at least 8 m;
• to the filtration field - 15 m;
• to the aeration unit - at least 15 m;

  
  Finding a place for a septic tank on the site is not easy

One more thing. If there is a slope on the site, then the well or borehole should be located above all treatment facilities. To maintain all these distances, you will have to spend a long time working on the site plan. If everything cannot be observed at once, special attention is paid to the distance to the neighbor’s house and well (well), since a violation is fraught with a complaint, subsequent inspections and fines.

Operating principle of autonomous systems

Modern septic tanks are based on multi-stage filtration of wastewater in a continuous mode. The internal space of the VOC is divided into parts:

• hermetically sealed or interconnected settling chambers;
• sections with equipment and measuring instruments.

The software monitors the state of the system. Pumps pump water from one chamber to another. The compressor is responsible for providing oxygen. Technologies involved in the work:

• mechanical filtration during the supply and settling of wastewater;
• biological processing of sludge by aerobic bacteria;
• additional cleaning.

Filters trap solid particles and grease. In addition to mechanical cleaning, colonies of bacteria work in special chambers. The result of VOC operation is clean water and a small mass of sludge.

After installation, bacterial strains are placed in the receiving compartment. Protozoa reproduce in the presence of oxygen in the atmosphere and the presence of sediment (silt). During biological treatment, there is no release of hydrogen sulfide: the sewer system operates odorless.

The durability of the equipment depends on the strength of the housing. The casing can withstand significant mechanical loads and is resistant to soil chemicals. If the owner follows the recommendations of specialists, the device will work for 50 years (without dismantling).

After installation and connection of communications, the factory system is ready for operation. Among the most popular product brands: Topas, Astra, Volgar, Alta Bio, ERGOBOX

Rating of the best septic tanks for permanent residence

Recycling stations for permanent residence have the best performance and degree of cleaning. The best solution is to install a deep cleaning utilizer and a special aeration device. At the same time, it is necessary to ensure uninterrupted power supply. Today this is the most optimal option for the disposal of fecal waste.

Expert opinion

Vertical designs are most practical in limited space. Perfect for small summer cottages. For example, Topas septic tanks reach operating mode within 7–13 days. They are easy to maintain, their only drawback is that they are not resistant to network fluctuations, that is, they need to be provided with uninterrupted power supply.

How does an autonomous sewer work?

1. Reception chamber
2. Coarse filter
3. Main airlift
4. Aerotank
5. Secondary settling tank of aeration tank
6. Storage tank for forced removal of treated waste
7. Airlift recycling
8. Sludge stabilizer
9. Secondary sludge stabilizer settling tank
10. Service airlift
11. Compressor
12. Sealed cable glands

Criterias of choice

To drain drainage fluid from the house, a small stationary model is installed. Its power should be comparable to the number of points of water use - bathroom, toilet, washing machine or dishwasher, sinks, swimming pool or sauna. Select according to the parameters of power and volume of the storage tank. It is better if the pump station is equipped with two pumps.

To operate the sewer system of a multi-story building, you will need a large storage tank and several units that will pump out the liquid. An important point is the presence of a cutting mechanism. It is better when there is one, since debris and large waste can clog the outlet pipe.

The principle of operation of sewerage in a country house

The inlet filter does not allow large waste to pass through. In the first compartment, processes take place: the initial purification of wastewater from mechanical particles and the capture of traces of fat.

The second stage is the processing of sludge by aerobic microorganisms. Sludge is a breeding ground for bacteria. The result of active biofiltration is wastewater purification by 80%.

The third stage is anaerobic processing of sewage waste. Fine cleaning neutralizes microorganisms that did not react in the second stage. There are combined systems that ensure the coexistence of aerobic and anaerobic bacteria.

Additional processing takes place at the finish line. The liquid is passed through volcanic powder. The treated wastewater is discharged into a tunnel to be directed to a storm drain or used for domestic needs.

Rating of septic tanks for summer cottages with the best reviews

At sites where seasonal living is planned, it is most profitable to use anaerobic energy-independent models. If year-round operation is planned, energy-dependent pumping stations are used. The former are much cheaper, but their operation requires soil purification using drainage wells. The latter clean wastewater more efficiently, even with intermittent use.

Energy-dependent biostations are included in the rating of the best septic tanks for summer cottages, as they have a purification degree of 95% or more. The only thing is that it is important to provide them with uninterrupted power supply to maintain the vital activity of bacteria that take an active part in the processing of fecal matter.