Ulanov M. The working up of the denitrification(s technology of the underground water in the reactor with a fixed biofilm

The thesis is devoted to the questions of the biotechnology's working up of the underground's purification from the nitrates. The technology is based on using of the denitrificating bacteria of Paracoccus denitrificans, which are fastened on the surface of the selected carrier, being able to perform both autotrophic and heterotrophic denitrifications. The application of the offered method of the heterophoby's denitrification allows greatly faster to form a biofilm on the carrier's surface, to intensify the process of the biological denitrification as well to increase the denitrification's speed for 20 % in comparison with the existing technologies of the biological purification of the underground waters from the nitrates.Key words: biotechnology, denitrification, underground water, Paracoccus denitrificans, biofilm, carrier, hydrophoby