ECOLOGICAL STATE OF THE ZIMNYAYA ZOLOTITSA RIVER IN THE AREA OF THE INDIRECT IMPACT OF THE MINING AND PROCESSING PLANT

Abstract

Introduction. Medium rivers play an important role in the environment: draining the large catchment area, they determine the water content and quality as well as hydrological conditions in large watercourses. The joint effect of such factors as the small size of these rivers and human activity disturbs the balance of ecosystems, thus increasing the vulnerability of the rivers. Significant negative changes tend to occur faster and stronger in river valleys. Our aim was to study the ecological state of the Zimnyaya Zolotitsa River ecosystem in the area of the indirect impact of wastewater from the mining and processing plant in the Lomonosov diamond field. Methods. In the course of the study, we used the standard methods for determining the main biogenic elements and oil hydrocarbons. Results. The paper provides data on the content of biogenic elements in water, pH value, dissolved oxygen and mineralization, as well as the content of oil hydrocarbons in water and bottom sediments. Conclusion. As a result of the studies, it was found that in the summer observation period, the concentrations of phosphorus, nitrogen and silicon salts as well as oil hydrocarbons did not exceed the maximum allowable values for fishery reservoirs.