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Improving the Performance of Biological Tanks in Wastewater Treatment Plants by Modifying the Conventional Ceramic Aerator

The purpose of the article is to study the process of aeration of wastewater using an aerator with an air-lift effect to ensure a uniform distribution of the concentration of suspended solids in the aeration tank of the model installation. Based on the result of the work carried out, experimental data were obtained and a theoretical description of the parameters of the aeration process, which increase the coefficients of mass transfer and the use of the reactor volume, and the costs of the process. The airlift effect increases the concentration of sludge. The airlift also helps in the spread of suspended solid in the tank, as mass transfer reactions during aeration increase by an average of 11.8%. Also, an increase in dissolved oxygen concentration from 3.02 mg / L to 3.5 mg / L, i.e., by 15%, which indicates an improvement in mass transfer and, accordingly, a decrease in energy consumption for aeration. However, the existing technological potential requires the introduction of variable equipment. An example of an alternative air dispersion system can be aerators with airlift effect.