Biological treatment is currently the most environmentally friendly method of industrial and domestic wastewater treatment. The process of oxygenation, or extracting a specific gas from a liquid, has been around for a long time. Aeration is the saturation of water with oxygen, which gives life to microorganisms, which, in turn, process toxins and organic matter, forming sludge. Bubble streams are created by diffusers installed at the bottom of the treatment pond. Artificial aeration is based on the enrichment of water with oxygen, which affects the structure and biological properties of the liquid. For the forced supply of large volumes of working gas, specialized vacuum-compressor equipment is used: aeration plants, stations or so-called aeration blowers.
For effective aeration, the blower must have a combination of the following properties:
- high efficiency at low pressure drop;
- do not pollute the supply air with oil vapours. Blowers should have a minimal impact on the ecology of the environment. Oil-free blowers are currently recommended. The absence of oil has a beneficial effect on maintaining the vital activity of bacteria and microorganisms during the treatment of sewage sludge, the air of which does not contain oil particles;
- work continuously for a long time;
- the pump fan must be very low energy-consuming, otherwise the cost of water treatment will be very high;
- maximum silence in work;
- resistance to corrosion, extreme temperatures and precipitation;
- ease of maintenance, operation, durability, reliability and energy efficiency of the design.
- fish farming;
- irrigation of plots;
- purification and preparation of water for production activities;
- jacuzzi and pool cleaning;
- production of metals, alloys by stamping (galvanization), etc.
The oxygen saturation process is as follows:
- Water is supplied to the aeration pump column, which must be cleaned and saturated with oxygen.
- The compressor at this time supplies compressed air to the same place. The bacteria contained in it begin to multiply actively, being in a humid environment. During reproduction, oxidized organic matter is produced, which purifies water from various impurities.
- After that, the treated water is returned, and the sediment left after aeration is disposed of.
