Modern townspeople increasingly prefer to spend time in the summer months in the hot summer months. But this does not mean that people seek to abandon all their urban habits: a warm toilet, cold and hot water should be in the house. Do you agree?
For those who are planning to equip an autonomous sewage system, the Rostock septic tank will be of interest, an overview of which we offer you. We will explain in detail how to choose a model that perfectly suits your needs. The article we proposed also details the installation rules.
Device and principle of operation
The problem of autonomous heating and water supply was solved by summer residents long before they became interested in the possibility of arranging local sewage on their site.
With the solution of the latter problem, the appearance of septic tanks on sale is connected. These devices allow you to clean household waste water and are a key element of local sewage. "Rostock" is one of the most popular septic tank models.
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Septic tank for the organization of autonomous sewage
Two treatment chambers
Installing a septic tank Rostock in the pit
Device for soil wastewater treatment
Like most similar devices, the Rostock is quite simple. In fact, this is a single tank, divided into two chambers. One of the cameras is equipped with special filters. To better understand the device of this septic tank, we will understand the principle of its operation.
Initially, all drains through sewer pipes enter the first chamber. This happens by gravity. The inlet pipe through which the drains enter the septic tank is equipped with a quencher. It does not allow sediment accumulated at the bottom of the chamber to agitate.
The first chamber is a sump. In it, all drains are divided into fractions. Heavy fractions settle to the bottom of the chamber: subsequently they will be pumped out. Light fractions along with liquid effluents rise up. Deprived of heavy fractions, effluents are considered clarified.
So, the clarified drains, moving from the bottom up, fall into the next chamber. She, as we have already mentioned, is equipped with filters. A mesh filter is used to delay large contaminants. The second filter is sorption. It is made of a special material - zeolite, the thickness of which reaches 20 cm.
The Rostock septic tank is arranged simply, but it is very thought out: everything is done in it so that the device can be used for a long time and successfully and easily maintained
When drains pass both filters, they are cleaned by 70-80%. Now they can be removed from the septic tank for tertiary treatment. This procedure is performed using multilayer soil backfill or special biofilters.
The following article will familiarize you with the general principles of the design and operation of septic tanks. The video located in the final section of our article will help you visualize the work of the cottage septic tank “Rostock”.
Operation and maintenance
A key element of the Rostock local treatment plant is easy to operate. The solid fractions accumulated in the first chamber should be periodically removed. This is usually done once a year, subject to year-round use of the device.
If operation is limited to the summer period, then the first chamber is cleaned once every two years. To solve this problem it is necessary to use a cesspool machine.
The heavy fractions (2) deposited on the bottom of the first chamber of the Rostock septic tank (1) are removed using a sewage machine, the sleeve of which penetrates into the device through the hatch (3)
The sorption filter located in the second chamber is also reactivated approximately once a year. The zeolite layer is simply washed with a solution of ordinary table salt. Filters need to be changed at least once every 15 years.
To increase the efficiency of wastewater treatment, you can use special biological products. With their help, anaerobic processes occurring in this device become more intense. Colonies of bacteria contained in additives process organics in wastewater, resulting in increased purification.
Comparison of advantages and disadvantages
Choosing a septic tank, we, of course, are interested in its merits, not forgetting to ask about the shortcomings. After all, before buying it is necessary to weigh both that, and another: the decision depends on what outweighs in each individual case. Therefore, we will talk about the pros and cons of the Rostok treatment plant.
We list the obvious advantages of the device.
- Strength and durability. The body of the product is made by a one-piece method: the cameras do not separate from one another. If you take into account the presence of stiffeners, you can be sure that this design will be durable and will last a long time.
- Unpretentiousness to service conditions. For the Rostock septic tank to work, it does not need to be connected to power. It turns out that it can be used in the area where there is no talk of developed infrastructure yet.
- Quality of work. This device provides a high degree of wastewater treatment. When biologically active preparations are added to Rostock, we can safely say that the effluents will be cleaned up to 92%. Oils and fat do not enter the second chamber of the tank at all.
- Easy installation. The device does not require special skills in the installation process and in bringing the septic tank to working condition. For this purpose it is not necessary to attract professionals: you can do it yourself.
- Reliability and security. The inlet pipe of the device is equipped with a damper, due to which even a sharp discharge of a significant amount of water into the sewer will not lead to water hammer.
Installation pleases with thorough design thoughtfulness. The device nozzles (inlet and outlet) are attached to the body using flexible elements, which allows them to remain unharmed even if the tank itself moves during seasonal ground movements.
Still, the Rostok septic tank has more advantages than disadvantages: it really will serve you for a long time and will fully pay off with your peace and health (+)
This device also has disadvantages:
- Light weight. The light weight of the device is a significant advantage in the process of its installation, which can also be a disadvantage, if we consider the risk of it “floating up” from the ground during periods of seasonal rise in groundwater. Although the Rostock shape does not contribute to this process, it is better to consider the possibility of constructing a concrete base for fixing it.
- Site Employment. The dimensions of the septic tank "Rostock" cottage suggest that it will occupy about 4 m2 of land area. This zone cannot be planted with anything except grass and small shrubs. In this area, with the addition of a meter along its perimeter, it is impossible to equip a parking lot, since the septic tank can be accidentally pushed.
- Sewage expenses. Pumping out unfiltered waste should be done with the help of trash cans. This means that your budget should also include this expense item.
- Device location The “sprout" cannot be placed wherever it pleases. It is also necessary to take into account sanitary standards, and the fact that a sewage machine must drive up to it. So, it should be near the road.
The disadvantages include the nuances of the design of the device: it does not provide for the possibility of a number of drains immediately into the second chamber.
But drains from the washing machine and dishwasher, which contain various detergents, should be poured here. This chemistry can destroy the beneficial bacteria that make up bioenzyme agents that are used in septic tanks.
As for the price of the device, then opinions differ. Therefore, we did not attribute this factor to either advantages or disadvantages. When you choose a septic tank for your summer cottage, then you decide how much this purchase matches your financial capabilities.
Standard lineup
Speaking of “Rostock”, one cannot fail to mention that this name bears not one, but several devices. That is, there is a whole lineup, the most popular and sought-after components of which we now consider.
The range of Rostock septic tanks is focused on the needs of the most diverse families: if desired, everyone can find the model that meets their capabilities and needs
Here is a list of Rostock septic tank models that are in high demand among consumers:
- Mini. The volume of this model is 1000 liters. During the day, it is able to treat approximately 0.3 cubic meters of wastewater. Septic "Mini" is designed for 1-2 users. It has a weight of 60 kg, dimensions 128x110 cm and a depth of 170 cm.
- Country. With a device volume of 1,500 liters, it cleans 0, 45 cubic meters of effluent per day. Septic "Country" is designed for 2-3 users. It has a weight of 100 kg, dimensions 170x112 cm and a depth of 184 cm.
- Country. The model has a volume of 2400 liters and is able to treat 0.88 cubic meters of waste water per day. The Zagorodny septic tank is designed for 4-5 users. It has a weight of 150 kg, dimensions 222x130.5 cm and a depth of 199.5 cm.
- Cottage. With a tank volume of 3000 liters, it daily purifies 1.15 cubic meters of effluent. Septic "Cottage" is designed for 5-6 users. It has a weight of 190 kg, dimensions 236x144 cm and a depth of 200 cm.
The inlet and outlet in each of the presented models have a diameter of 110 mm. From the top, the inlet is located at a distance of 80 cm, and the outlet is 85 cm.
For one or two people who constantly live in a country house, the use of this miniature septic tank is the perfect solution
Of course, this list cannot be considered exhaustive. Other models bearing the name "Rostock" are also sold. They can be additionally equipped with biofilters and other systems for the post-treatment of sewage water.
A standard Russian family is a mother, father and one child. If such a family lives in the country in the summer, then to ensure a comfortable stay, the septic tank Dachny is best
The prices of these septic tanks depend not only on the amount of treatment equipment that they are equipped with, but also on the performance of different models.
An example of a spread in prices is the recent quotation for the simplest septic tank, the Mini. On sale, this model was found at a price of 25-26 thousand rubles, while the "Cottage" model in the same time period cost 55 thousand rubles.
Septic tank "Cottage" is designed for year-round operation by his large family, which consists of 5-6 people: equipped with biofilters, it will preserve the environment in perfect condition
Features and selection criteria for a septic tank are given here. We recommend that you read some very useful information.
Installation of a treatment plant
One of the advantages of the Rostock wastewater treatment plant is that you can install it yourself without spending money to pay for the services of involved specialists. The standard installation steps of the septic tank will be introduced by our recommended material.
Installation and connection of the Rostock brand sewage treatment plant includes a number of standard steps:
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To immerse the Rostock treatment plant in the soil, a pit is being developed, the bottom of which is covered with sand and rammed until footprints on the surface stop printing
For laying trenches under the sewer pipeline, trenches are being developed, the bottom of which is also covered with sand
Sewer pipes in trenches should be laid with a slope of 2 cm per meter for the free movement of sewage
For further processing, which consists in soil wastewater treatment, another sewer line is connected to the outlet of the septic tank
Pipes are connected to the septic tank by diffuse welding, the joints are treated with sealant to completely eliminate leaks
Sewer piping is laid from the septic tank to the house. This sequence allows you to properly lay or correct, if necessary, the slope of the pipe
After assembly, the system is filled with water in order to identify possible defects before filling. If everything is normal, the pit is filled with sand or a sand-cement mixture, if stagnation of water is observed during the flood period
The sewer pipe near the exit from the house, near the septic tank and soil post-treatment systems must be equipped with ventilation pipes
Stage 1: Excavation and tamping of the bottom
Stage 2: Formation of trenches for laying sewage
Stage 3: Lead of trenches to the pit with a septic tank
Step 4: Discharge the sewer pipe from the septic tank
Stage 5: Assembling the sewer pipeline at the facility
Stage 6: Putting the sewer into the house
Stage 7: Filling the pit with a sewage treatment plant
Stage 8: Sewer Ventilation Pipe
Choosing a place for a septic tank
There are regulatory documents according to which a septic tank can be located close to the house, but at a distance of no closer than five meters. This distance is considered optimal for several reasons.
The sewer pipe leading to the septic tank should be at an angle so that the drains move by gravity. Too long a distance will lead to the need to dig a septic tank too deep. In addition, the longer the sewer network that enters the sewage treatment tank, the more likely it becomes clogged.
Regulatory documents, such as SNiP 2.04.03-85 and others, contain some restrictions regarding the location of the septic tank.
It should be located in a place located:
- 5 meters to the buildings;
- 50 meters to the source of water (well or well);
- 5 meters to the side of the road;
- 3 meters to the trees.
The direction of movement of groundwater is also taken into account: it should be carried out from the water source to the septic tank, and not vice versa. Practitioners believe that with this arrangement of the well, the septic tank can be located 30 meters from the source of water. There will be no deterioration in its quality. Fifty meters is a standard that is not always possible to take into account, based on the actual size of the site.
Development of trenches and foundation pits
The drain pipe coming from the country house or cottage should be below the level of freezing of the soil. It is believed that for central Russia, the depth of the trench should be approximately 1.5 meters.
However, this indicator is individual and depends on the specific area. The proposed pipe slope should be 1:50 or 2 cm / meter. Such parameters should be considered when digging a supply trench.
Since the most popular septic tank Dachny from the Rostock series is relatively light in weight, two strong men (+) can easily install it
There should be a sand cushion under the sewer pipe.
To install the septic tank itself, you should dig a pit. The parameters of the pit sole by 60 cm must exceed the corresponding dimensions of the bottom of the septic tank. It is desirable that the bottom of the pit be strictly horizontal. The permissible deviation is only 10 mm per meter.
For a discharge pipe, a trench should also be dug. Its optimal slope is 1: 100 or 1 cm per meter.
This diagram shows all sizes, which allows you to perfectly navigate and correctly install the Rostock septic tank on your site
Installation of a treatment plant
Polypropylene products are used as sewer pipes that discharge sewage into a septic tank.Choose products designed for pressureless outdoor networks. Their diameter should be 110 mm. Separate sections of the pipeline should be connected using couplings with rubber seals.
Similar pipes connect a septic tank and a filtration field. In order to insulate both lines of pipelines, foamed polyethylene or conventional expanded clay backfill can be used.
The septic tank itself can be installed in various ways. The choice of the best option depends on what level underground water occurs under your site.
- With a deep occurrence of groundwater. It is good enough to tamp the bottom of the pit, and then lay a sand cushion on the bottom of the pit. Its thickness should be 10-30 cm. A polyethylene tank is installed on this pillow. Try to place it strictly in the center of the pit. The clearance between the ground and the tank should be approximately 30 cm.
- In case of high groundwater location. A reinforced concrete slab equipped with eyelets made of concrete-reinforcing reinforcement is laid on the bottom of the pit. To prevent the container from “floating up”, it is tied to the plate with plastic straps.
If you have problems with the purchase of the slab, you can replace it with four standard curb stones. They will perfectly play the role of anchors. Another way out is independent concreting of the bottom of the pit.
The final stage of work
To sand surrounded the pipeline from all sides, when filling the trench of the pipe manually fill the sand. And then the excavation can already be filled with soil dumped during the formation of the pit.
Each layer of sand-cement mixture that will be sprinkled into the space between the septic tank and the wall of the pit must be carefully compacted so that even with the movement of the soil the device is not damaged
Between the walls of the tank and the pit, either pure sand or a mixture of sand and cement are also filled. When preparing a mixture of 80% sand add 20% cement. Filling the gap should occur in layers. Each layer of 20-30 cm is carefully tamped.
Before you fill up the next layer of the mixture or sand, it is necessary to pour water into the septic tank flush with the future layer. On top of all layers, a soil-vegetable layer is placed in the pit and trench.
A few words about additional filtering of drains
Usually, after the Rostock wastewater treatment plant, biological or soil treatment systems are installed.
With a groundwater level of 1.2 meters and deeper and a sandy incoherent type of soil, a filtration field is used. This is the name of the kit, which includes distribution and irrigation pipelines.
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Group of soil infiltrators
Filter trench construction
Construction of a filtration field
Filtering sewer well
At a groundwater level of 1.5 meters or deeper, a set of Drainage Tunnels is used. Rostok biofilters can be used on any soil and at any level of groundwater. For additional cleaning and drainage after the septic tank, an absorption well can be installed.
When installing an additional filter, finished products are installed on a pillow of crushed stone with a thickness of 30 cm. The gap between the filter and the soil is filled with layers of crushed stone and sand, introduced alternately.
Filtering, it is also absorbing, the well can be built independently. To do this, 2-3 reinforced concrete rings are installed on the same pillow of crushed stone. With the function of an absorption well, a drain pit from tires can cope with success, the device of which we recommend that you familiarize yourself with.
Wastewater entering sewage pipes into the septic tank is not 100% cleaned in it, which means that their treatment must be continued using additional filters or at least a drainage well
It is necessary to waterproof the resulting case, after which it is filled 100 cm in layers, first with sand, then with gravel or crushed stone. The fraction of each lower backfill layer should be less than the overlying one.
If the bottom ring of a well is buried in sandy soil that does not have good filtering qualities, then lateral drainage is arranged. To do this, either initially use a concrete ring with perforation, or drill holes for the drainage flow in the walls of the ring after installation in the pit. The diameter of the formed holes is 10 mm, the spacing is 5-10 cm.
They say that it is better to see once than to read or hear. Therefore, as a clear demonstration of the principle of the septic tank "Rostock", we suggest you familiarize yourself with this video:
The following video will familiarize you with the installation process of the septic tank. You will see the phased installation of an autonomous sewer "Rostock" model "Zagorodny" with the arrangement of the filtering field:
It is not true that the romance of suburban life must necessarily be accompanied by a rejection of urban goods. On the contrary, summer vacation in the country should be as comfortable as possible. Let you have cold and hot water, heat on a cool day and, of course, autonomous sewage, which allows you to dispose of waste water without harming the environment.
Have you also installed a Rostock septic tank at your summer cottage? Or neighbors took advantage of this option, but do you know all the technological details? Share them in the block below, please leave comments, ask questions, post photos on the topic.