Today, many dachas are equipped with plumbing in the same way as city apartments. Showers, bathtubs, dishwashers and washing machines are installed in country houses. However, before installing plumbing, you should take care of the arrangement of the local sewage system and choose an effective installation for processing and treating wastewater. If we are talking about a small country house or a small cottage in which no more than three people will live, then you can choose the Unilos Astra 3 septic tank.
Septic tank Astra 3 is the most compact in the model range. This small installation can effectively process 600 liters of wastewater. Such installations can be recommended for installation in a small house in which no more than three conditional users are planned to live.
This installation is environmentally friendly, very convenient to use, and does not require constant attention. Unlike conventional septic tanks, Unilos Astra installations do not spread unpleasant odors around and do not require the installation of aeration fields.
Specifications
- The first thing you need to pay attention to is the maximum number of users of the septic tank. Astra 3 is designed for a maximum of three residents, therefore it is recommended for installation in small dachas.
- Performance. The sewer system is capable of processing up to 0.6 cubic meters of wastewater.
- One-time liquid discharge. For this model, the maximum figure is limited to 150 liters.
- Design power. Septic tank Astra 3 is equipped with one compressor with a power of 40 W.
Septic tank Unilos Astra 3 assembled
- Liquid drainage method. Depending on the type of soil, Astra 3 uses different drainage methods. Gravity - does not require additional equipment and can be used in regions with soil such as black soil or sand. Forced - involves pumping out purified liquid using a special drainage pump. This method is used for soils that do not permeate water well, for example, clay.
- The station is equipped with one block and has small dimensions - length 100 cm, width 80 cm. The height of the structure ranges from 203 cm to 213 cm. This depends on the design features of the lid - it can be flat or with a mushroom.
- Relatively low weight. The Astra-3 septic tank weighs no more than 135 kg, which means that installation will not take extra time and effort.
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What is a septic tank?
Septic tank Astra 3 is a compact installation that performs a full cycle of wastewater treatment. As a result of the station’s operation, two types of products are formed – technically pure water and activated sludge. Water is allowed to be discharged onto the ground, into reservoirs or into community-wide storm sewer systems.
Advice! If desired, you can purchase an additional container into which purified water will be pumped, because it has neither odor nor a large amount of impurities and is quite suitable for irrigation or other household needs.
Activated sludge, the excess of which will need to be periodically pumped out of the station, can also be successfully used on the farm. The pumped-out substance can be sent to compost and, after rotting, used as an organic fertilizer.
Advice! Pumping out excess sludge will not be a big problem. To carry out this operation, the installation has a built-in pump (air lift). In addition, the pumped substance resembles ordinary lake sludge in color and smell, so there will be no problems with the spread of an unpleasant odor throughout the area.
Specifications
- daily productivity – 600 liters, the station is capable of serving up to 3 conditional users;
- the installation can accept a salvo discharge of 150 liters of water;
- power consumption is 40 W, the station will consume 1.3 kW of electricity per day;
- weight – 120 kg;
- dimensions – 0.82 x 1 x 2.03 meters;
- the volume of the compartment accumulating sludge is 268 liters.
Discharge of purified water is possible either by gravity through the outlet pipe or by force. In the latter case, a drainage pump is included in the station package. The body of the Astra 3 septic tank is made of environmentally friendly and durable plastic – polypropylene.
The walls of the case are quite thick (20 mm) and have stiffening ribs, so the installation can withstand quite heavy loads. Complete sealing of the housing is achieved by using a special welding technology.
Device and principle of operation
This sewer system is manufactured in such a way that all filter components are located in the housing. The station is located below the surface of the earth in the area that it must serve.
Unilos Astra 3 device
The housing of the Unilos Astra 3 septic tank consists of four elements:
- receiving tank;
- settling tank;
- aeration tank;
- liquid drainage system after processing.
The sewage system in question is equipped with pumps and ventilation. Devices are necessary for aeration of wastewater, as well as for its transportation from one reservoir to another.
The waste that has accumulated as a result of the wastewater filtration procedure is removed using pumps. If additional pumps are installed, the waste removal rate increases significantly.
The operation of a septic tank is based on two processes: mechanical and aeration. No active chemicals are involved in the processing process.
The procedure for processing waste liquid is as follows.
Equipment Unilos Astra 3
The wastewater is discharged into a receiver, where the first step in its processing takes place. The waste liquid is mixed with activated sludge, which is formed due to the activity of a colony of bacteria located in the sewer. The receiving chamber performs the following procedures:
- after mixing activated sludge with wastewater, oxygen saturation occurs, as well as anaerobic-anoxic filtration of the latter;
- the liquid level inside the cleaning station is equalized;
- large fragments precipitate;
It is important to know! To eliminate the possibility of blockages in the sewer system, it is necessary to pay attention to the substances that are washed into it. It is not recommended to wash off any debris that cannot be broken down by bacteria, for example, polyethylene or wool, large elements or sand.
- after this, the accumulated and settled liquid mixed with sludge masses is transported to the aeration tank by means of an airlift. In this section, the mixture is oxidized and oxygenated through biological processes. Substances of organic origin break down into nitrites and carbon dioxide. In fact, the Unilos Astra 3 septic tank accelerates the natural processes of decomposition of substances.
- then the treated liquid flows into the second settling tank. There is no oxygen in this chamber, and therefore the liquid is separated from the activated sludge without additional intervention. After this, nitrite and nitrate nitrogen restores its structure.
Operating principle of Unilos Astra 3
- sludge constantly moves from the aeration tank to the second settling tank and vice versa. The fat layer that is on the surface is broken down using special means. The individual elements are returned to the aeration tank for reprocessing.
- processed water without sludge masses is removed from the settling chamber. The discharge of recycled liquid can be carried out by gravity or forced. Also, the purified liquid can be used to water the land.
- If the liquid level in the sump drops, recirculation begins.
- sludge particles are retained in the aeration tank. After some time, they accumulate into fairly large fragments, which are removed by airlift. The remaining sludge masses are transferred to the stabilizer and then disposed of.
It is important to know! This system is fully automated and therefore does not require human intervention, but the level of accumulated substance should be regularly monitored.
- recirculating water with sludge particles is discharged into a receiving tank, where large fragments remain. The water is saturated with oxygen, mixed with activated sludge, and then split into small fragments.
As new wastewater enters the primary reservoir, the water level in it rises, which is why the purification process starts again.
Unilos Astra 3 interior view
All the processes described above are carried out automatically and do not require human intervention.
It is important to know! For constant and stable operation of the autonomous sewage system Astra 3, it is necessary to ensure an uninterrupted supply of electricity. This is necessary for stable operation of the compressor. Otherwise, the colony of bacteria will not be able to properly clean the drains.
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Possibility of application and installation of Unilos Astra 3
You can install a turnkey Astra 3 septic tank within one working day, and ongoing maintenance does not require specially trained personnel or complex equipment. An important feature of the new system was the complete absence of unpleasant odor during operation, which made it possible to place it in any convenient place, even in the basement of a residential building.
The entire system is designed to simultaneously serve three consumers, the maximum salvo discharge of which does not exceed 150 liters. This is quite enough for installation in private cottages, dachas, and small industrial enterprises. It is possible to choose a purified water drainage system - gravity or forced. The second option is more complex, and is used if it is necessary to install a septic tank at a greater depth.
User manual
The operation of this device is associated with some features. A technical passport is supplied with each device, where all the rules are stated. The passport also contains instructions for using the station, describes what liquids can be flushed, and also has a section on the nuances of septic tank maintenance. The most important rule that must be followed unquestioningly is to create a comfortable environment for the growth of bacteria.
The following should not be flushed into this sewer system:
- chemical substances;
- wool, contents of dust containers, any large debris;
- rubber, plastic and polyethylene products;
- rinsing waters.
It is necessary to discharge acidic chlorine-containing substances as rarely as possible. When using a septic tank, excess sludge should be removed regularly.
Septic tank maintenance
As the instructions say, Astra 3 can be flushed into the autonomous sewer system:
- low-density toilet paper;
- waste after washing, provided that the powder does not contain chlorine;
- kitchen drains, if they do not contain chlorine-containing detergents;
- wastewater from bathtubs and showers;
- means for caring for plumbing fixtures, but not more often than once every seven days.
You should also not wash off a large amount of liquid at one time. The device is controlled using several buttons.
We recommend following the link https://vse-postroim-sami.ru/engineering-systems/plumbing-sewerage/7200_septik-topol/ to learn more about the Topol septic tank. You may also be wondering how to preserve a septic tank for the winter. Read about how to properly build a septic tank here.
In order to start working, you should press the “Network” button, which is responsible for automatically starting the station. All other buttons are needed for maintenance and control of equipment operation.
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Instructions for use ↑
The use of equipment involves some nuances. All rules for using a septic tank are indicated in the technical data sheet that comes with it in the kit.
It contains instructions for using the device, what waters are allowed to be discharged and features of its maintenance. One of the main rules is to provide an environment for the development of clean sludge bacteria.
The following cannot be discharged into the Unilos sewer system:
- toxic substances;
- animal hair, vacuum cleaner filtrates and other large debris;
- rubber and polyethylene films;
- rinsing waters and drinking water sedums.
The use of products containing chlorine or acids should be minimized. During operation of the device, be sure to remove excess activated sludge.
For technical characteristics and tips for installing a Unilos Astra 5 septic tank, see the article: Astra 5 septic tank. For information about the biological method of wastewater treatment, see here.
According to the instructions, it is allowed to discharge into the sewer:
- toilet paper that easily decomposes;
- water from washing machines, unless powder containing chlorine is used;
- drainage from the kitchen in the absence of chlorinated detergents;
- water after taking a bath and shower;
- means for cleaning plumbing fixtures, but no more than once a week.
Large wastewater discharges should not be made at one time. The septic tank is controlled using several buttons.
To turn on the device, you must press the “Network” button to automatically start the system. The remaining buttons are used to check its operation and service.
Installation
Installation instructions for Unilos Astra 3 begin with determining its location. Ideally, the sewer line should be straight without bends, this way you can save money on purchasing inspection wells. The distance from the building should be about five meters.
The installation of this station consists of several steps.
Pit preparation
If the soil allows, then all preparatory work for arranging the pit can be done manually. This way you can save money and preserve the original landscape design. If work is carried out on rocky terrain or any other difficult-to-process soil, it is necessary to call specialized equipment.
Digging a pit
The depth of the pit depends on the location of the sewer line. For the Astra 3 septic tank, the depth must be at least 230 cm. The pipes that are supplied to the septic tank must be no deeper than 0.6 meters. The pit should be 0.5 meters wider than the dimensions of the septic tank. After the trench has been dug, it is necessary to level and compact its bottom.
There should be no stones or loose soil under the structure. The bottom of the pit must be covered with a layer of sand of 0.25 meters. The depth of the structure should be 0.15 meters greater than the dimensions of the device, taking into account the embankment.
Preparing the supply trench
The width of this trench should be about 50 cm and the depth 0.6 meters. These dimensions should be sufficient to arrange a sand cushion and maintain the required slope.
Supply trench
Its dimensions depend on the modification of the installed structure. If the autonomous sewer system is equipped with a drainage pump to remove recycled liquid, it is necessary to maintain a distance of 7 cm from the septic tank itself to the point of water release. If the pump is not present in the cleaning system, then this trench is arranged in the same way as for the supply line. It extends from the outlet of the septic tank to the filter platform.
Lowering the septic tank into the trench
This operation will require four people. The installation must be tied with ropes and placed near the hole in a horizontal position, and then carefully lowered down.
Descent of the septic tank into the pit
Septic tank leveling
After the structure has been laid in the pit, work on its installation should begin using a building level. The level must be set perfectly, the slope must be zero.
After this, the containers must be filled 50% with liquid and the structure must be sprinkled with sand on all sides up to the level of the pipeline inlet.
Installation of supply pipeline
Sand should be poured into the trench and compacted tightly. The thickness of the resulting pillow should be at least 0.1 meters. When installing pipes, a slope of 2% should be maintained.
Brown pipes are perfect for these purposes. Such products are much stronger than others, and therefore are not subject to mechanical stress from the soil. The diameter of these pipes should be 11 cm. The pipe coming out of the base of the building must be connected using a bend.
It is important to know! During sewer installation, turns should be made by 15-45 degrees. If the length of the line is more than 15 meters, and the angles of rotation reach 90 degrees, inspection wells must be installed to eliminate possible blockages.
Dple needs to do some insulation. To do this, you need to lay insulation along the length of the line. You need to use foamed polyethylene. After laying the pipeline is completed, it should be covered with sand and compacted.
Installation of supply pipe
At each stage of installation it is necessary to control the angle of inclination. This is a condition for normal transportation of liquid along the line without clogging.
Electrical cable installation
When laying sand, you need to leave room for the cable above the pipes. It must be laid loosely so that it does not tear if the soil moves. After this procedure, the trench must be covered with earth.
Connecting the system to the supply pipeline
The process is carried out through a polyethylene pipe. The junction of the tubes and the wall of the station must be treated with a construction hairdryer to ensure tightness.
Organization of wastewater disposal
Installation of pipes is carried out in the same way as installation of the supply system. A concrete well can be used to construct a wastewater receiver.
It is necessary to lay the pipeline on a sandy base in the main line from the outlet pipe with a diameter of 11 cm. Then you need to cut in the ring and seal it with a waterproof substance.
Wastewater disposal
At the same stage you need to install the pump. After all work is completed, the trench should be covered with a layer of sand, and then with the remaining earth.
If the plans include the installation of a storage tank, then it must be carried out in exactly the same way as the installation of the structure itself.
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Installation of septic tank Astra 3 - main points
Before installing the system on the site, it is necessary to measure the groundwater level, as well as assess the degree of soil density. It should be taken into account that it is recommended to arrange a sanitary zone around the septic tank, the radius of which is at least 15 meters. After digging a pit and installing the septic tank body into it, it must be securely fastened - otherwise, displacement and depressurization of the seams is possible.
After this, communications are installed, (a drain pipe must be provided), all connections are checked for leaks, and additional equipment is installed. The entire system must be insulated in accordance with the recommended standards for a particular region. Then the septic tank is backfilled with sand concrete mixture. The sand must be pre-screened.
Wiring diagrams Astra 3
Electrical connection
There is a sealed cable entry on the front surface of the unit. A cable with phase-neutral-ground conductors is suitable for this purpose. It must be connected to the compressor compartment.
Now you can begin installing the compressor. It is equipped with rubber feet, and therefore the noise level from the device is minimal even with the lid open.
The pump and compressor are connected to the electrical network through sockets located in the compressor compartment of the structure.
Electrical connection
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How to use?
When using septic tanks from the Unilos Astra line, you must follow simple rules. If you ignore this point, the station may fail. The following must not be disposed of in the sewer:
- construction waste, plastic bags, baby diapers and other things that cannot be recycled;
- toxic substances, solvents, petrochemicals, medications, as well as water that was used to wash drinking water filters;
- animal hair, as well as cleaning vegetables and mushrooms.
When choosing household chemicals, you should give preference to products that do not contain chlorine or other antibacterial additives. It is necessary to ensure that the volume of water discharged simultaneously does not exceed the maximum salvo discharge value.
Otherwise, the station will flood. In the event of a power outage, the sewage system should be used to a minimum, since the septic tank cannot function if the compressor is not working.
The septic tank must be regularly maintained by pumping out excess activated sludge. If you wish, you can perform the pumping yourself. If the Unilos Astra installation is used in a summer cottage, then when stopping for the winter, it is necessary to carry out simple conservation measures:
- pump out excess sludge;
- turn off the power;
- dismantle the compressor (it must be kept warm);
- fill the chambers two-thirds with water;
- lower plastic bottles with sand, tied by the necks with ropes, into the chambers so that two-thirds of the bottles are immersed in water;
- close the lid and place insulating material on top (for example, old blankets or jackets).
So, if you need to choose a suitable septic tank for your dacha, you should pay attention to the Astra 3 model. This is a modern installation that will provide high-quality wastewater treatment. In addition, the installation is easy to use, reliable and completely safe.
