Methods and methods of water purification from iron

  • Iron impurities are the most common problem in drinking water, regardless of the methods and methods of obtaining it. Such water has an unpleasant taste, becomes cloudy, and its use can seriously harm health. For this reason, various methods of purifying water from iron are used to make the water clean and safe for health, as well as household appliances.

    Many homeowners find that drilling and running wells eliminates the problem of dirty city water. This is an erroneous opinion, since natural water contains many elements that, in large quantities, are also harmful to humans. An artesian well will not solve the problem of stiffness, as well as an overabundance of iron. This fact can be established visually - water containing iron becomes cloudy, however, a crystal clear liquid will not guarantee purity. It is enough to add a little potassium permanganate to a glass with such water so that its transparency changes to a yellowish-brown hue.

    The situation is not uncommon for shallow wells fed by infiltrating surface water. Even after settling, the turbidity remains, because the dissolved iron still does not settle to the bottom. When a film forms on the surface, you can be sure that there will also be iron bacteria in the structure.

    When running water from the tap meets the above characteristics, has a clear "metallic" taste, you need to think about choosing a method for purifying water from iron. It is recommended to use modern treatment systems, for the correct selection of which it is extremely important to conduct a preliminary analysis of the water . The specialists of our company will always help in the selection of the optimal installation for iron removal.

    Common methods of iron removal
    There are many ways to deal with iron in a plumbing. There are two main methods for effectively removing iron and its residual compounds - reagent and reagent-free.

    Methods of deferrization, on the basis of which filtering installations are created, are as follows:

    Aeration.
    Membrane cleaning (osmosis).
    Ionic cleaning.
    Ultrafiltration.
    Mechanical cleaning.
    Sedimentary filters.
    There is no universal way of deironing water , which allows you to get rid of all types of pollutants. In each specific case, the type of pollutant is determined by specialists individually.

    Mechanical filters
    These filters are used when large iron fragments are present in the water. Fine granule cartridges and propylene models make it possible to get rid of oxides. Such installations are most often installed in houses with a central water supply. If they are used in private houses, then the water must first be purified from iron.

    To pass the recommended filtration, macro filters are used that retain large particles. Fine cleaning is carried out using cartridges with a small mesh size.

    Ionic filters
    The process of deferrization of water by ion exchange refers to the reagent method. Its principle of operation is based on a selective change in the composition of water at the ion level. If you want to remove iron, catalytic resins in combination with fractional additives act as filters, allowing you to replace metal ions with sodium ions.

    Aeration
    The principle of water purification from iron by aeration method is based on the oxidation of Fe (II) dissolved in liquid with oxygen. This effect turns it into an insoluble oxide, which can be removed by a mechanical or other filter. Aeration is carried out by pressure or non-pressure method.

    Membrane filters
    The technology of water purification from iron using reverse osmosis is considered to be the most advanced, allowing both pretreatment and fine purification. Reverse osmosis membranes effectively remove any impurities from the liquid, making it drinkable. The scheme of deferrization of water in this way is as follows: larger insoluble iron particles are retained by the built-in prefilter. The main cleaning takes place by passing water through a thinner membrane, which is achieved due to the pressure difference. Contaminated water has an increased density, therefore it is separated from the molecules of pure liquid. The first is discharged into the drain, while clean water enters the system and is safe for further use. best commercial water purifier in bangladesh


    Sediment filters
    Methods for purifying iron water from a well by means of filters with backfill are reagent technologies. The procedure is carried out for liquid from wells, if aeration cannot be applied for technical reasons, or provides insufficient cleaning. Proprietary materials ( Manganese Greensand , etc.) are used as a filtration medium in such installations . Iron oxidation is accelerated several times due to the filling.

    The scheme for purifying water from iron in this way is as follows. Water enters the filter, passes through the backfill, rises up the water pipe and leaves the purifier. When the regeneration cycle begins, water enters the water pipe from the top. Under its action, the backfill layer is loosened, and the iron compounds deposited on it are washed out. Further, an automatic reagent treatment of the backfill takes place, restoring its chemical activity.