Nezdoyminov V. One sludge nitrification-denitrification in biological reactors with air lift submerged aeration system.

The thesis is devoted to the development of a method simultaneous nitrification and denitrification in biological reactors with submerged air lift aeration system for waste water treatment and sludge digestion. The general laws of growth of microorganisms in activated sludge biological reactors while deletion of organic contaminants and inorganic nitrogen compounds. Conditions of the process of denitrification in aerobic conditions, depending on the concentration of nitrate, oxygen and organic substrate, allowing to combine simultaneous nitrification-denitrification are found. Established science-based hydrodynamic model of two-phase flow liquid-to-air, what is formed the basis for the calculation of biological reactors with a submerged air lift aeration system. Based on the synthesis of theoretical and experimental data patented industrial design submerged airlift aerator with high tissue dispersants for high performance simultaneous removal of organic pollution and warning of mineral nitrogen one sludge biocenosis of activated sludge are developed and implemented. Developed and patented a method of aerobic mineralization of precipitation municipal wastewater, based on the ability of the complex including heterotrophic and autotrophic nitrifying denitrifying microorganisms, including anammoks-bacteria, simultaneously oxidize organic pollution and high-nitrogen compounds without the accumulation of nitrate produced in the decay of sediment.