How to choose a water filter: which one is better?

The problem is, how to choose a water filter, is relevant to every family that cares about maintaining health. The fact that the body on a daily basis must be at least a liter of clean water even know the children, but also raises the concern the quality of entering the apartment and liquid house. For this reason it is very quickly coming to realize that it is necessary to take measures to avoid negative consequences and to drink good, healthy water. So, what filter is best to buy?

classification of filters

All varieties of modern filters are divided into two major groups.

• Accumulating filters, characterized by natural seepage of liquid to be purified through the filter elements.
• Pressure devices, involving the creation of pressure to filter water passed the device.

Considering the group of pressure treatment devices can be distinguished among them are two types:

• Nozzles oriented for attachment to the crane.
• Stationary filters, dividing into two subtypes: classical instruments and a reverse osmosis unit.

If we take as a basis for the classification of water treatment method, the following kinds of filters will be allocated:

• Mechanical - removal of impurities;
• ion exchange - water softening;
• Membrane - removal of harmful substances, viruses, bacteria;
• biological - the use of microorganisms for elimination of organic substances;
• Physicochemical - through the use of adsorbents.

Comparative functional analysis filters

To choose a water filter for specific conditions, it is necessary to consider their varieties, based on the functional purpose. For mechanical retention suspensions ≥ 1 micron on entering the apartment directly into special highway crash Filters - reticulated, Sediment, pre-filters, designed to extend the life of domestic sewage.

Purification by simple passage of fluid nozzle is carried out through an activated carbon bed, is fixed on the crane. The positive performance can be attributed the low cost and small size of the device. a small performance stands out among the minuses.

Decontamination parallel to facilitate cleaning flow filtration devices, which are placed on the sink. These disadvantages include the need for experts joining the crane flexible hose every time you need to clean water.

Some housewives do not like the fact that they take place at the sink, but elegant shape, the aesthetic appearance organically fit into any stylistic decision kitchen. Among the advantages of good performance can be identified, component ≈ 1,5 l / min.

Multistage reverse osmosis filters are installed in a closed niche under the sink, carrying out almost a full cleaning and disinfection of drinking water. They suggest a separate tap, placing them next to the main. One tap supplies water already past the membrane barrier, and its use is recommended during cooking. It is good for hygiene, especially when there is a problem skin. The second valve is designed to set the drinking water which has passed from the release of further possible odor and mineralization and has a composition useful for the organism.

The two-stage cycle can hold filter jugs. The advantages consumers include low cost, ease of operation without an installation in water. They are compact, easily installed in a convenient location, in harmony with the other kitchen utensils.

Among the drawbacks noted restriction amount of the purified water tank volume, monthly need to replace the cartridge. Structural formula assumes that the filler of activated carbon, coping with chlorine and microorganisms. Also available ion exchange resin that promotes softening of water and its mineralization. Porous activated carbon is additionally ensure the destruction of odor and remove the organics. Polypropylene fiber operates to delay impurities.

The filter in the form of a cylinder Sediment type is best suited for use in the homes of private type. The body of a material resistant to corrosion, and a substrate placed gravel filter layer. Water passing them vertically from above, lying upon a special tube to the nozzle exit to the outside.

The disadvantages of such a standalone relates need for periodic washing of the filter or the regeneration using a special reagent.

For trips are lightweight portable filters with a convenient handle. There are also multi-system Water purification for private houses (cm. picture).

The innovative technology of reverse osmosis

Unique ability to clean almost completely from all sorts of contaminants has progressive installation, functioning on the principle of reverse osmosis. The main element to guarantee such a result is a membrane through which can seep water molecules, and all other particles, including bacteria and viruses are kept and the purified liquid is not fall.

Usually reverse osmosis plant It focused on the presence of five steps:

• Cartridge mechanical principle of the delays are large enough scale particles, sand, rust.
• Filter with a filler of briquetted coal can remove organic substances, residual chlorine.
• A filter filled with granular charcoal for odor, traces of heavy metals, gases.
• The osmotic membrane, after which a full container arrives purified water.
• Mineralizer adds beneficial minerals.
• Postugolny filter helps neutralize the smell, which can sometimes occur after a storage tank.

Good water quality, convenient location devices, simple operation are the predominant criteria for choosing an expensive reverse osmosis system.

Nanotechnology in water purification

Modern filters have improved Fibos element made of hyperfine (25 microns) nanowires, wherein the core metal and the upper protective cover glass. Such a filter not filler attracts contamination remaining in the flask and special pourable simply by rotating the drain valve. This is the advantage in comparison with other types that require regular replacement cartridges.

The spacing between the turns of one micron nanowires that allows the passage of water through the filter only. All pollution, pathogens remain in the outer container.