Scientific publications

The paper deals with estimation an extent of contamination water bodies by dilution factor of sewage water. The method based on calculation a dilution factor by using content of conservative matters, which are specific for each source of anthropogenic contamination. In the capacity of research object was chosen the Kenti lake-river system influenced wastewaters from “Karelian pellet” ore dressing mill entering with discharge from tailing dump with filtering waters and with brunch duct's waters. Concentrations of potassium and sulfates are considerably higher in the anthropogenic waters then in the natural waters with background values. So these components are conservative chemical measures. Estimation of dilution factor anthropogenic waters in the Kenti lake-river system was realized by using these components for many years period.
By reason of many source of anthropogenic influence on the Kenti lake-river system, dilution anthropogenic waters proper is difficult estimate. Dilution factor was calculated relatively Poppalijarvi's waters (Poppalijarvi lake accumulates all anthropogenic waters) as well as relatively tailing dump's waters that introduces basic contribution to anthropogenic load on the Kenti lake-river system.
In general tendency to decrease dilution factor Poppalijarvi's waters is observes as for downstream lakes (Koivas and Kento) well as for lake Srednee Kuito over the time of many years. Dilution tailing dump's waters is a little changing.