Aeration is used when there is a need to remove iron and manganese salts from water, as well as free it from hydrogen sulfide. The technique allows you to eliminate the unpleasant odor emanating from it and other gases. The aeration process is actively used for wastewater treatment and for domestic needs (for example, water for an aquarium). For such purposes, the procedure is carried out to increase the oxygen concentration in the water, which makes it possible to accelerate the course of biological processes in the sewage system or to take care of normal air exchange for aquarium fish. The main application of  aeration  is water treatment from a well.

Treatment with oxidizing agents is one of the main stages of water purification. For these purposes, different methods are used. In addition to aeration, the addition of chlorides, hydrogen peroxide and other substances to water is actively used. Of all the components used, atmospheric oxygen is considered the most harmless and economical. To enrich water with oxygen, aeration ejectors or special compressors are used.

Purpose and advantages of aeration

The result of the procedure is the formation of manganese and iron oxides. The compounds become insoluble, precipitate in the form of flocks, which is then retained by the filtering system. Not only metals are oxidized, but also volatile compounds with an unpleasant odor and toxic properties.

Aeration is widely used in industry and in everyday life as an effective means of freeing liquid from ferrous components. This method is used almost always in the preparation of water golden tech water purifier supplied to private houses from a well. In addition to useful minerals, natural water from an artesian well contains a lot of impurities and organic pollutants, so it needs preliminary treatment before it enters the main filtration system.

Compared to other pre-cleaning methods, aeration is the most effective, since it does not involve the use of any chemicals and catalysts, the residues of which will also need to be disposed of. The essence of the process is to saturate the liquid with oxygen. Thanks to the aeration of the water, it will be possible to do without the addition of chlorine tablets and other reagents, which indicates the safety of the procedure.

The main goals of aeration:

Deferrization, removal of manganese and other metals.

Elimination of unpleasant odors.

Increasing the concentration of oxygen in the aquatic environment.

The applied aeration systems have many advantages:

Compact dimensions of the units, allowing them to be placed in rooms with a small area.

Affordable cost.

Work in automatic mode.

No need for additional maintenance of installations during operation.

Aeration techniques

The procedure for saturating water with oxygen can be carried out in several ways.

Electrochemical aeration of water  involves the use of electrochemical reactions, due to which the effective treatment of liquid with a high iron content is carried out. Plants operating according to this principle are distinguished by noiselessness, economical energy consumption, ease of operation and compactness.

The pressure method  is used when the content of Fe (II) in water is up to 15 mg / l and there is sufficient pressure in the main water supply. The liquid entering the aeration column under pressure turns on the compressor, which pumps air. The oxygen contained in its composition enriches the water, after which it is filtered.

The non-pressure method  is used at low pressure and low water pressure, as well as if the content of ferroparticles is more than 15 mg / l. In such installations, an additional tank is provided, where the liquid is supplied, sprayed with special nozzles. Oxygen enrichment is also carried out by a compressor, but a pump is used to feed the filter.

When the content of hydrogen sulfide and iron in the water is small, a simplified aeration technique is allowed. In this case, the level of acidity of the water should approach the neutral indicator (about 6.8). The simplified aeration method is based on the operation of an air injector. Passing through a special tube, the water flow sucks in O2 bubbles due to the pressure difference. The water that has passed through the air injector is saturated with oxygen, the dissolved impurities in it are oxidized and precipitate into an insoluble precipitate. In terms of cost, this method is cheaper, but it has some restrictions on the scope and functionality.