The purity of water is not only a global problem of our planet, but also a household task that every person decides (or does not solve) for himself on a daily basis. We drink water every day (in pure form or with food).
And therefore, whether it is necessary to clean the water from the tap – the question is far from idle. And although now in any hardware store you can see a huge assortment of different types of household filters from dozens of brands, which one is good – it is difficult to understand in appearance.
In fact, it’s much easier to choose a smartphone or car. First, both smartphones and cars have clearly measured technical characteristics, according to which some models are easily compared with others. With filters, it’s harder – how to compare pitchers? By what parameters besides the volume? Secondly, the Internet is full of reviews of cars and gadget collections.
But there is practically no research and tests that allow us to compare household types of filters or distinguish one brand from another. Either because earlier we did not give the purity of water of such importance, or why. But now most people, when choosing water filters, rely not on facts, figures and research, but on their own flair (often deceiving), on advertising and promotion of the brand.
At the same time, often being in captivity illusion: “Overseas – it means the best.” But the practice, however, destroys the slender advertising appeals and promises. Moreover, many of the advertised filters do not completely purify the water.
A little theory about clean water
It’s no secret that the water from our cranes is a source of not life, but often – of rust and heavy metals, bacteria, parasites, toxins, pesticides and bleach. It is clear that once you swallow – do not die, but in the long run, harm is possible. It is enough to look 2-3 rollers about brittle hair from bad water (which must be nourished with balsams). Or advertisements for water softening in washing machines, the details of which are horrible! – from tap water spoil. What will be of this water with our body?
The thing is that “communal” water not only runs through old worn pipes. There could be a long description of the technologies that are used for water purification in municipal water supply, but this is rather boring. Therefore, briefly: the water canal removes large particles of mud from the water, kills bacteria with chlorine or ozone (in Russia in 99% of cases it is chlorine).
Toxic organics without any problems passes all these filters and does not go anywhere. In addition, moving through municipal pipes, water absorbs rust from them, heavy metals and other dirt – and often gets into our shells hard and tasteless . And, sometimes, and not very useful, because, for example, in the process of passing through the pipes, chlorine forms chlororganic substances. The remains of aluminum also do not adorn life. But this is a forced measure of municipal water treatment, it is impossible to do without them.
Therefore, many conscious people purify water. Someone buys bottled water, which is not bad, but still there is no absolute certainty about the cleanliness and this water (who knows – from the well it is actually being recruited or in the garage from the tap?). And someone buys and installs home filters, based on their needs and budget.
Filters: what is on the market and what you need exactly for you
There are three most common types of household water purification filters.
The first, the most common type, is jar filters: a regular jug for 2-4 liters of water, which can be used at home, even at the dacha, and every 2-3 months to change the removable cartridge. The most simple and budgetary option: a jug costs 500-1 000 rubles.
Often when buying the first cartridge comes complete with a jug. And then approximately every 1.5-2 months you need to buy a new cartridge – it’s somewhere around 200-300 rubles.
But the filter jug, for the most part, can not “change” the hardness of water and does not accurately clean viruses and bacteria – water is still recommended to boil. However, from dirt, rust, heavy metal ions, pesticides and toxins, it must certainly purify water.
The second type is stationary flow-through filters: these are systems that are installed under the sink and connected to the water supply. Clean water is discharged through a separate tap. A flow sorption filter will not filter out water from viruses, but it will cope well with rust and most of the organic contaminants.
Some flow filters (but not all!) Soften the water. But there are also disadvantages: in the presence of very hard water, the softening module of such filters will have to be changed quite often. The specific frequency depends on the hardness of the water, and can range from 3 months to 1 year or 200-300 liters of water spilled through them.
However, for the sake of health, you can and agree with this need. For some models, there are cartridges with a hollow fiber membrane that cuts up to 100% of bacteria and parasites.
The third type – reverse osmosis filters – is the most advanced, because they purify water 100% of rust, toxins, bacteria, heavy metals, pesticides and even viruses! It is clear that this is the most expensive, but also the most effective type of filters. The system is also installed under the sink, but has decent dimensions, because it works hard. Water under pressure goes into the system: it is taken from the water pipe, where there should be a pressure of at least 3 atmospheres.
Getting to the preliminary cleaning, water is first “cleaned” from the largest fractions of mud, like the same rust. Then – filtering in the following modules, each of which clears on an increasingly shallower level. The decisive module is a reverse osmosis membrane, twisted into a roll. Passing through it under pressure, the water is purified from any contaminants (even small viruses) and merges into a storage tank.
As it is clear from the process, the water purification is quite long, therefore a storage tank for clean water is needed (which is an extra place in your kitchen).
And there is another important technical “chip” that you should remember when choosing a particular filter. That very special membrane is cleaned of the remaining dirt on it – also water from a water pipe, which is called drainage. This drainage water then goes to the sewer, and its consumption for the production of 1 liter of clean water is money that you will pay at a rate.
Therefore, if you choose a reverse osmosis filter, be sure to look at the drainage water flow rate indicator. In a good filter, 1 liter of clean water drains up to 4 liters of drainage water. In not very good – up to 8-10 liters.
Let’s move on to testing
If in appearance all the devices look almost the same, then, how to understand what is really good and purifies the water in the best way? How to understand that you spent 500-1 000 rubles on a jug (and once every 1-2 months you spend another 200-300 rubles for replaceable filter cartridges), which will not really pour you clean water into the kettle?
You can order an examination of the water. You can make water quality measurements with special instruments. You can read a review on the Internet – but they are almost there. What to do then?
There are a few simple and absolutely “home” ways to visually see the capabilities of the same filter jugs. A couple of such tests, which can be quickly done at home, we describe right now. The experiment involves jar filters of the three most popular brands in our country.The test for water filtration from methylene blue, similar in structure to pesticides and toxins
The first test is the simplest. It will require a solution of “Methylene blue”, which costs a maximum of 50 rubles and is sold in any pet store. Usually fans of fish use it for disinfection of aquariums. Methylene blue with its structure is very similar to some pesticides and toxins – only it has a pronounced blue color.
And if the water passed through the filter is blue or blue – it is clear that such a pitcher does not completely remove the same pesticides and toxins from the water, or weakly removes it.
Such a simple “blue” water test in jugs shows: only Aquaphor, ONE OF THE THREE jugs, completely copes with the task of cleaning water from pesticides and toxins – the water in its case is colorless. The other two show a radical blue color. Conclusions to make it simple: in fact, the water from the two “blue” filters can be completely useless.
The second test is a bit more complicated, because for him it will be necessary to make a solution with a 300-fold excess of the maximum permissible concentration of iron in water. The purpose of the check is to see how the jugs can pass or not pass rusty water. Accordingly, the more yellow water we get at the exit – the less faith in the effectiveness of a particular pitcher. And no vigorous advertising will not save.Test for the filtration of water from rust
The results, again, are clear: the cleaning of the same Aquafor jug, which showed the best results with methylene blue, and here, in comparison with the competitor, is obvious. Of course, in ordinary water, the tap does not have a 300-fold excess of the iron content. But it is difficult to challenge the fact that Aquaphor cleans better.
By the way, these and other simple and simple experiments that allow you to evaluate the quality of home filters, can be read in great detail by this link .
Thanks chemist enthusiast, who decided to check all the filters for their real abilities, and posted on the network their experiments and methods for their conduct. In principle, this is the first full-featured review of water filters in RuNet – certainly not worse than any detailed review of the smartphone.
So, why is Aquaphor more effective?
If quite honestly, the technologies of most manufacturers of domestic water filtration systems over the past 30 years have not progressed much. In jar filters, as a rule, one and the same classical sorbent is used: activated carbon and ion-exchange resin.
Their combination is able to remove organic matter, oil products, chlorine, heavy metals. But there is a nuance. Water has the property of forming channels. Passing through the sorbent, it quickly forms “loopholes”, the channels between the granules of coal and tar. And flies through such channels, almost untreated, whistling straight into our mug.
And Russian chemists from “Aquaphor” really cared about this problem – and they decided it! They developed and patented the special fiber Aqualin-2. First, it removes ions of heavy metals from the water and does not allow the active silver ions to wash out of the sorbent, which kill many (but not all) bacteria.
Secondly, more importantly, Aqualin-2 binds granules with coconut charcoal and ion-exchange resin to a single composite – so that the sorbent keeps its structure and shape. And water can not pierce the canals in it. It simply has to be cleaned up thanks to the “Aqualenic coupling” of sorbent granules. Which, by the way, is 1.5-2 times smaller than that of competitors. Which is also good, because the smaller and more uniform the sorbent composition – the higher its purifying properties.
To all this did not look unfounded, you can just look at the results of a real opening of the cleaning cartridges of the same material on the “Habr” . The interior of the filters, which showed themselves not very well in the tests with methylene blue and rust, are literally the same as the heaps. A sorbent “Aquaphora” is similar to a fine kulichik (keeps the form), and the photo clearly shows the fibers of Aqualena-2.
And it is still clear where Aquaphor detained the “blue” – in the very top of the filter (this is the top part of the filter cartridge), i.e. at the furthest approaches to cleanliness. And so it is possible to say almost boldly (with slight apprehension that one of the mentioned manufacturers will want to hit the head): filters with the letter “B” in the experiments showed the inability to make from dirty and actually toxic water – absolutely clean and harmless.
Hence, the purchase of such a filter for the house means only one thing: before the filter you drank chlorinated under-treated water, and with such filters you will continue to drink it. Although with a lower concentration of rubbish. Just spend on a brand that has been advertised.
Plug-in modules after opening
“Aquaphor” and other types of filters
If in a simple filter jug Aquaphor uses revolutionary solutions for cleaning – how does it work with the possibilities of more expensive and complex filters?
In the case of the Russian manufacturer “Aquaphor” unique developments, of course, there are more complex water filtration systems. Thanks to the presence of its own research institute (by the way, the largest in Europe of its kind!), The company has been one of the world leaders in innovation and development of water treatment systems for 26 years.
This domestic scientific research institute employs more than 100 chemists, engineers, technologists and developers. For the whole period of the company’s work, tens of millions of dollars have been invested in scientific research and development, and Aquafor supplies its filters to 44 countries of the world. Also, Aquaphor delivers filters to bottled water producers and produces filters for retail sales under other brands: for example, Aro filters (own brand of the network) produced by Aquafor are sold in the METRO Cash & Carry network.
There is, for example, a reverse osmosis filter Aquaphor Morion, which not only cleans water 100% of all pollutants, including viruses. In the history of reverse osmosis, it is not so much the coolness of the filter that is important – reverse osmosis filters of almost all brands are really very good. Also, consumer properties are extremely important, as discussed above.
- Dimensions . At “Aquafor Morion” they are much less than competitors. Because the developers have figured out how to put a 5-liter tank in the system (and not outside, like in other brands), than did the filter almost twice as compact.
- Economical . The same drainage water discharge at “Aquafor” is 1.5-2 times lower than that of competitors: 2-3 liters against 4-5.
- Productivity . “Aquaphor Morion” cleans approximately 8 liters per hour, and competitors – 5-7. In this case, for normal operation, “Aquafor” suffices pressure in 2 atmospheres. Analogs need from 3 atmospheres, which is not always achievable in typical old houses.
All this became possible thanks to another unique development of Aquaphor – a water-water storage tank. The fact is that usually in a reverse osmosis filter with full filling of the tank with water 1/3 of its capacity remains empty (there is air). Therefore, the usual tank is quite large.
And the developers of “Aquafor” built the tank directly into the system case, and it works on a different principle: the water from the control cavity merges without creating resistance, and the filling rate of the tank remains constantly high. Hence the increased efficiency of the filter, and, ultimately, the user’s savings in space and in money.
If there is a desire, a detailed comparison of reverse osmosis filters can be read here .
Total: what do we have in the dry balance?
So, any adequate person understands that in the current communal conditions, it is necessary to purify or purify water. Due to the study of the question it became absolutely obvious that the advertising of filters does not affect their real skills to purify water. And you can buy an expensive filter of a famous brand that will actually poison you, because it will not protect completely from rust and toxins.
Or you can choose the filter of the Russian manufacturer “Aquafor”, which is guaranteed to turn dirty water into a clean one. And in the case of the coolest reverse osmosis system “Aquafor”, besides the top quality of water treatment, it will be compact, economical and productive. And the main thing: there is no secret, and the water does not need to be “charged with Chumak from the TV.”