Rating of the best septic tanks
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The best aeration septic tanks
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Topas S 4 Pr The manufacturer of this septic tank (the largest in Russia, by the way, as he himself claims) promises us not only full compliance with sanitary standards (the level of wastewater treatment is 98%), but also a fifty-year service life. The design of this outwardly simple box is actually completely complete — after aeration, the liquid accumulates in a separate compartment, from where it can be removed automatically by the built-in pump. The body is made of thick polypropylene, thanks to which the septic tank is durable and absolutely insured against corrosion. Consider that it is actually eternal: only the aerator and the suction pump wear out. At the same time, the weight was reduced to two and a half centners, which makes installation easier. Inside, the building is divided into five chambers, which, according to the algorithm of operation, copy the classic cleaning chain, which until recently was used at all Vodokanals in the country. From the receiving chamber, your “good” enters the aerator, followed by a secondary sedimentation tank, a sludge stabilizer and a finishing storage tank with a drainage pump. There are two input options — you can choose a more convenient side. The estimated volume of daily supply is up to 0.8 cubic meters, which approximately corresponds to the operating conditions of a family of four. Electricity consumption per day (depending on whether the drainage pump is running or not) is up to 1.6 kWh, mainly due to the operation of the aerator. Main advantages:
Minuses:
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 9.8
/ ten Rating
Reviews I chose the best septic tank for a country house according to reviews on the forums. It was expensive, but the septic tank is definitely worth the money: no fuss, everything is automatic.
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Unilos Astra 4 In many ways, Astra 4 is similar to the previous participant in the ranking of the best septic tanks — a polypropylene case similar in design, a built-in single-compressor aerator. However, this septic tank is much cheaper (including due to the absence of a drainage pump for forced pumping), which is also important when buying. The estimated flow of wastewater is up to 600 liters per day. The compressor is diaphragm, and of well-known Japanese brands: the company uses two types of compressors, HiBlow from Techno Takatsuki and Secoh (Secoh Sangyo Co. Ltd.). Compressors of the first type have been produced since 1967 and during this time they have been “licked” almost to the ideal, requiring no lubrication and having a minimum amount of maintenance — as a maximum, one day you will have to replace the membrane. Secoh compressors are more affordable (because they have been manufactured by a subsidiary in Shanghai since 2005), but they cannot be accused of insufficient quality either. However, personally, the author would still prefer HiBlow. The energy consumption of the aeration system is very low: the compressor consumes only 40 W, that is, it will “burn” only 960 W * h per day. At the same time, the absence of a separate pump for drainage does not mean that you will have to manually remove the drains or call for vacuum trucks: the built-in airlift, although less efficient than forced drainage by a pump, is quite efficient. Since the removal is carried out directly from the secondary sump, there is no finishing drive, like Topas, so the septic tank with a comparable capacity came out more compact, and its installation is less laborious. Nevertheless, in the absence of problems in the budget, it is Topas that looks more advantageous, so this septic tank gets only second place. Main advantages:
Minuses:
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 9.6
/ ten Rating
Reviews Good value for money. The septic tank works as it should, the building is eternal. Access to the compressor is easy, which is also a plus.
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The best septic tanks with biofilters
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Alta Bio 3 The septic tank, produced in Chekhov near Moscow, is able to «digest» the flow of up to 600 liters per day. Of course, if the culture of microscopic shit-demons bred in it does not play the fool: alas, this is a common problem for all bioseptics. There are three degrees of purification — a three-section sump is responsible for mechanical, biological (replaceable biofilter) occurs at the inlet, and chemical coagulation is also possible, but you will have to stock up on special Alta Doctor Septik tablets. A low power built-in pump, controlled by a unit located under the cover, ensures constant recirculation of the liquid in order to ensure maximum efficiency of the biofilter. At the same time, the manufacturer indicates that even in the event of a power outage, the septic tank will continue to operate normally, so, in principle, it can be operated in a completely autonomous mode. Be sure to connect the power supply only after the «wintering», if the septic tank is installed in a seasonally used cottage. The septic tank is mounted simply: it weighs only one hundred kilograms, the body is made partly of polyethylene, partly of polypropylene. Ease of installation is another argument in favor of installing this septic tank in the country. With a large depth of soil freezing, it can be deepened, while maintaining access to the neck: it is enough to install the extension rings offered by the company on it. Main advantages:
Minuses:
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 9.6
/ ten Rating
Reviews You need to dig in shallowly, and the septic tank itself does not weigh that much — they installed it quickly, it works as it should.
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Colo Vesi 3 midi The price for a guest from St. Petersburg is the highest in today’s rating. Well, one can only hope that efficiency and durability correspond to it.
A curious feature of this septic tank is that aeration in it does not occur forcibly, by blowing air through the chamber with a compressor, but in the process of recirculation: wastewater is fed into the upper cassette, which is filled with mesh biofilters. Since recirculation does not occur constantly, for the sake of justice we will not classify the septic tank as either “purely aeration” or “combined”, since such aeration is much less effective than forced. But, of course, the absence of a compressor is a plus for reliability. The other side of the coin is labor-intensive maintenance. This is due to the fact that the aeration basket filled with biofilters is located above the main tank, unlike other septic tanks, where it is enough to lift the lid to access the “insides”. If we also remember the price … In general, the “St. Petersburg” in our ranking of the best septic tanks for home and summer cottages today are definitely losing to “Muscovites”. Main advantages:
Minuses:
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 9.3
/ ten Rating
Reviews Expensive, but it seems like it’s worth the money, and you don’t have to worry about the compressor — it simply doesn’t exist.
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The best septic tanks with combined cleaning
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Eurolos BIO 3 The Moscow company offers a septic tank with constant recirculation in two versions — the Bio 3 septic tank presented in the rating does not have a drainage pump, it is emptied either by gravity or an external pump is required. The more expensive «3+» equipment has an out-of-the-box drainage pump. The body is cylindrical, made of polypropylene. Due to the shape, it is stronger than rectangular ones, and besides, it has no seams, so you don’t have to worry about the durability of the septic tank. The cleaning cycle goes through the primary clarifier, in which anaerobic bacteria cultures, an aerator (aerobic bacteria are “registered” in it) and a secondary clarifier do their work at the same time. It is from here that the intake for recirculation takes place, the flow is split into two: part of the waste goes to the biofilter, and part returns to aeration. In this case, the chambers are arranged coaxially: the aerator is in the center, and the settling tanks are located in the space between the aeration chamber and the outer walls. The 350-watt recirculation pump works on a timer, for every 15 minutes of operation there is a 45-minute pause. Estimated productivity — 600 liters per day. The service life set by the manufacturer is 50 years. But the warranty for everything except the electromechanical part is only three years, for the compressor itself and the recirculation pump — a year. Main advantages:
Minuses:
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 9.8
/ ten Rating
Reviews In terms of performance, it is enough with a margin, the compressor has worked for three years without problems.
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TVER 0.5 P To get the maximum degree of purification, it is logical to combine both aeration and biofilters at once. It is this scheme that is used in the Tver septic tank line: an anaerobic bioreactor-filter is installed behind the primary septic tank, the liquid from which enters the aerator, and already behind the aerator the second stage of biological treatment takes place in the aerobic reactor. The rise of wastewater from the tertiary clarifier is provided by an airlift. Maintenance of filters is required no more than once a year, access to them is not difficult — a rectangular cover opens all compartments at once. The aerator compressor consumes no more than 38 watts, is reliable and durable. Unfortunately, the manufacturer gives a guarantee only for a year after the installation of the septic tank. The disadvantage of the combined scheme is also obvious — the septic tank has a relatively low capacity, only 500 liters per day. If we recall that, according to the norms, one person consumes 200 liters of water per day, it turns out that the estimated “human intensity” for him is the classic “two and a half diggers”. In reality, of course, it will be enough for more people, but for the same money, an aeration or “purely biological” septic tank will have a larger working volume. And this is taking into account the fact that we are considering the cheapest equipment without a drainage pump — that one is even more expensive. Main advantages:
Minuses:
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 9.5
/ ten Rating
Reviews As he put a septic tank in the country, it works. The current eats a little at all, so the constant operation of the compressor does not bother.
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The best septic tanks for home and garden
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Rostok Countryside This two-chamber septic tank has a capacity of 2400 liters, so that in a private house it will not bother you with an unnecessarily frequent need for pumping. It is interesting that the design of the septic tank allows you to improve it by installing an external biofilter from the same manufacturer. In this case, the septic tank itself will serve as a sump, and the pump installed in its second chamber will begin to drive partially filtered effluents for biological treatment. However, the price of such a design will be comparable to «ready-made» bioseptic tanks, inferior to them in efficiency due to the lack of recycling in the proposed scheme. Therefore, it is more reasonable to purchase a septic tank of this model as an independent design. Incoming wastewater passes through two stages of purification — through a strainer and sorption. The manufacturer indicates that they need to be cleaned regularly: this is perhaps the most unpleasant procedure that you will have to face after purchase. The seamless container itself is made of polyethylene: this reduces the price, while the developed stiffening ribs and the barrel shape provide sufficient strength. Main advantages:
Minuses:
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 9.7
/ ten Rating
Reviews Good quality, and the volume of the septic tank for a country house is sufficient. You don’t have to pump very often.
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