Assessment of the water quality of the Volga River in the area of the Podnovsky roadstead of oil tankers for nitrogen-containing compounds

Abstract

In connection with the long stay of ships in the roadsteads and the influence of pollutants on the electrical conductivity of water and the corrosion rate of structural elements of the vessel, the article assesses the quality of the water of the Volga River in the area of ​​the Podnovsky roadstead of oil tankers. The purpose of this study is to assess the content of nitrogen-containing substances in the surface and bottom layers of the Volga River in the area of ​​​​the Podnovsky raid of oil tankers and the discharge of wastewater from the Nizhny Novgorod aeration station to determine the significance of the impact of its activities on the pollution of the water use facility. In the background section, an excess of the maximum permissible concentration of ammonium nitrogen was found to be almost four times higher. In the control section, there is a significant increase in ammonium nitrogen relative to the background by 34.5%. The maximum concentrations of ammonium nitrogen are found below the wastewater discharge in the surface water layer in the range of 1.8 - 1.3 maximum allowable concentrations. The maximum concentration of nitrites exceeded the maximum permissible value by 4.8 times.