%0 Journal Article %T THE RATIO OF CHEMICAL OXYGEN DEMAND TO SUSPENDED SOLIDS CONCENTRATION AS AN INTEGRATED INDICATOR OF POLLUTION SOURCES IN SURFACE WATERS %A Kuznecov, E.A. %K chemical oxygen demand, suspended solids, COD/TSS ratio, surface water quality, environmental monitoring, wastewater, drainage water, marginal filter, environmental indicator %J MOSCOW ECONOMIC JOURNAL %D 2026 %N 11 %P 13 %I Electronic science