Today, the biological method of wastewater treatment is the most effective. The use of this method allows mineralization of pollutants, as well as remove organic phosphorus and nitrogen. Organic compounds that dissolve in water as a result of the activities of various microorganisms decompose into a number of components that are completely harmless to a person.
Among the advantages of this method are not only high efficiency, but also the maximum possibility of the degree of wastewater purification, as well as the absence of disadvantages that some other methods have (for example, an unpleasant odor is characteristic of chemical cleaning). In addition, this method provides for environmental friendliness and safety.
The essence of the process that provides for biological wastewater purification is the implementation of three stages. After the formation of the sediment in a special reservoir, various oils, resins and suspended substances contained in water are removed. This is the first stage. The second stage provides for additional cleaning of clarified wastewater. The final stage is the supply of additional air with pneumatic aerators. Due to this, there is a mixing of wastewater with active silt, after which it is saturated with oxygen. This allows microorganisms to act. Subsequently, active silt is removed or returned to the installation so that it can be used in the future.
It is worth noting that the biological method of wastewater purification allows not only to eliminate all the pollution and use the water resource secondly, but also to accumulate separately, as well as filter out waste. Then they will find their application in agricultural processes as fertilizers.
