Rekomendatsii for choice the filter for water treating

The choice of the filter for many of us turns to the present problem! Than it is necessary to be guided by we cannot often answer, sometimes the choice occurs thanks to bright advertising, design of an item, instead of real advantage.And meanwhile quality of water water even in one city, for example Moscow, in various areas sharply differs.Certainly, we dream of "filters-versatile persons" which would clear water of all harmful components at a time. But what harmful impurity are present at our water, it is not known. Any water, dependng on a water consumption source: dlyakogo-it municipal water water in apartment, for others-it water from an artesian chink or from a well on a summer residence, someone uses spring water, in each concrete case water has the specificity. Therefore and the filtrational equipment, it is necessary to choose first of all proceeding from features of water and the purposes of application of the filter.There are requests SanPiNa 2 about limiting dopustimoykontsentratsii elements in water. Selecting vodooochistku, it is possible to be guided by both corresponding norms SanPiNa, and own desires. For example, the people, suffering urolithic illnesses prefer to drink the distilled water in which is absent salts and establish the filters completely clearing of them."On an exit" as a result of filtering, it is possible to reach certain quality of water, knowing only what water was "on an input" before processing.In the beginning, say, about the general substances which are present with various concentration "on an input" and at water water, both in a well, and in an artesian chink, and in a spring. Further we will address to specific elements which are peculiar, for example, to water water, but do not contain in water to an artesian chink. Also we will describe as the minimum contents of those or other substances influences health and quality sanitary technicians, home appliances redundant, or.Defining indicators for a filter choice are: rigidity, iron, permaganatnaya oxidability, rN, manganese. Clear basically of them.A number of elements: phosphates, nitrites, fluorides, connections of active chlorine, hydrogen sulphide, mechanical particles, petroleum appear are peculiar only to the given source of consumption of water. Certainly, concentration of the elements set forth above differs in each concrete case.In the book “Anzhelika”, one old American Indian leader learnt Anzhelikuopredelyat water: what useful, what harmful. And so definition which the Indian has given to pure and useful water-is ideal correct, ideally good: "If water on smack rigid, it cannot be good."There are some indicators which are the cores for definition good water or bad. The first: rigidity.The rights there was an Indian "hard water not can be good", but very soft water too cannot be good. Hard water is simply unpleasant on taste, in it it is excessive a lot of calcium. The rigidity optimum level in water should be 1,5-2 mg-ekv/l.Rigidity above 4,5 mg-ekv/l leads intensive nakopleniyuosadka in system of water supply and on the sanitary technician, the formed scum stirs to work to home appliances. The probability zarastaniya pipes limy adjournment increases, that is the scheduled service life of the pipeline decreases. Rigidity salts, otlagayas in systems of heating and hot water supply, lead to the over-expenditure of energy carriers and put out of action boilers ahead of time.Rigidity happens karbonatnaya and nekarbonatnaja - still it name time and constant. There is one of methods of removal of the time rigidity, known to each housewife, kipyachenie. Certainly, such clarification solves many problems, but thus creates others. It is enough to boil water that the calcium hydrocarbonate has broken up with carbon dioxide allocation ivyipadeniem in a deposit of a carbonate of calcium. We daily observe this process in teapots.But at kipyachenii appearance of ware worsens, the scum nanagrevatelnyih elements is formed, that essentially reduces durability of their work.The constant use of water with the raised rigidity leads to accumulation of salts in an organism, and, in the issue, to disease of joints (arthritises, polyarthritises), to formation of stones in kidneys, bilious and a bladder. In hard water is worse myilitsya washed, the detergent powder cost increases.Special magnetic processing of water, it (mediagon) special filters can be one of variants of stabilisation of the rigidity preventing kaltsievyie adjournment on pipes. Though experts recommend to use these systems not instead of traditional softeners, and together with them.Very soft water not less dangerous, than unduly rigid. The activest is soft water. Unduly soft water is capable to wash away calcium and useful organic substances, including useful bacteria from bones. At the person the rickets can develop if to drink such water since the childhood, the adult person has fragile bones. The water having rigidity more low 0,5 mg-ekv/ljavljaetsja korrozijno-active in relation to pipes and coppers, is capable to wash away adjournment in the pipes, waters accumulated at a long stagnation in water supply systems. It involves occurrence of unpleasant smells and taste of water.However it is normal umyagchennaya water specially gives in in a contour of hot water supply to prolong copper service life."Iron" water too cannot be useful. The contents of iron input above the specification promotes deposit accumulation in water supply system, to intensive colouring of the sanitary equipment. Iron gives to water unpleasant red-brown colouring, worsens its taste, causes development zhelezobakteriy, deposit adjournment in pipes and their contamination.The high contents of iron leads to adverse effect on a skin. At washing by hard water on a skin the film insoluble kaltsievoy the salts, causing irritation is formed.Iron should be up to standard 0,2-0,3 mg-ekv/l but if on kaltsiyuest the bottom border, on gland of such border is not present. The less than iron contents in water, the better for quality of water and for an organism. We receive enough iron, at the use of apples, greyfruktov, oranges. That is the food supplies us with iron and water can be perfect obezzhelezennoy. The top border of iron in water of 0,3 mg-ekv/l.There is such indicator of water, permaganatnaya oxidability. Onsvidetelstvuet about what quantity of oxygen water is capable to absorb, oxygen goes only on organic chemistry oxidation. Norm Sanpina of 5 mg-ekv/l, however at concentration more than 2 mg-ekv/in water is present enough of organic impurity.The organic chemistry is very good shlakoobrazuyuschim the agent, organikamozhet to cause any smells, but as a whole it is subjective, someone drinks and I speak "I feel nothing" If a lot of organic chemistry slags with metals are formed. A lot of collateral, for example, pesticides.So household filters (iodnyie, hloraminovyie,) sposobnyiumenshit in water quantity of bacteria, at the best, to clean also organic components (coal filters).One more indicative element of water - it rN (vodorodnyiypokazatel). If rN more low 6,5-6,6 there can be a corrosion of pipes. By the way in rain water rN it is equal 5,5 and it is close to rN a healthy skin.So, clear basically of rigidity, organic chemistry, gland, restore RN and the manganese contents.Speaking about specific elements of water, it is possible to name soedineniyahlora. Water water disinfect chlorination. But at presence of a considerable quantity of organic chemistry, formation of the extremely harmful hloroorganicheskih connections, in particular dioxine is possible. Accordingly such water requires disposal of free chlorine.In an artesian chink and water water can prisutstvovatbolshoe the contents of small particles (sand, clay, a rust). Such mechanical impurity make essential impact on durability and eksplutatsionnyie characteristics sanitary technicians (smestiteli on osnovemetallokeramiki, pipes, baths, toilet bowls, per capita cabins).Depending on concentration of the weighed particles with their distribution by quantity and the sizes, the filtrational equipment steals up. In particular, the more concentration the is more powerful owes the sedimentary filter. Average significance of the weighed particles about 9-10 mg \l, in case of such concentration the sedimentary filter is not necessary.So, some elements, it is necessary to delete to a zero (iron), drugieneobhodimo to keep in corresponding limits (mg-ekv/l calcium-50).For a filter choice, except data on quality of water, it is necessary to define precisely for what purposes the filter is applied. It is possible to use only for potable water clarification, in that case it is necessary to choose filters of deep clearing, and probably more scale application, for a household purpose:dlya poliva a kitchen garden, for pool, for sanitary technicians then are necessary osadochnyiefiltryi.If have decided to choose the filter for the economic-household purposes it is important to know how many water analysis points are in the house, apartment, to be assured of quantity living, and certainly the nobility what water was "on an exit", These three requests give the chance most favourable to pick up filtrational system.Observing all conditions about which it was spoken earlier, it is possible to pick up that filter which optimum approaches, but all the same to decide to you.

Baharev Irina Aleksandrovna
Laboratory of the analysis of quality of water
Open Company "ISVODTSentr"
www.isvod.ru

Date of the publication 25.07.03