Polluting potential of urban wastewater sludge (on the example of Brest region)
Abstract
Based on the research results of heavy metals (HM) content in urban wastewater sludge (UWWS) of treatment facilities in nine cities of the Brest region, their polluting potential for local soils was assessed using the concentration coefficient (КС in relation to the local background) and the hazard coefficient (Ко in relation to hygienic standards).
Compared to the regional background, a high degree of enrichment in zinc is shown – 36.0–717.1 times, copper – 32.1–567.6, nickel – 4.8–138.6, chromium – 2.0–147.6, which indicates high polluting potential of the studied cities. The ranked series of the average concentration coefficients of HM in the UWWS in relation to the sub-regional background and the hazard coefficients of HM in the UWWS for 9 cities under consideration are presented. It has been shown that in small towns, the polluting potential of UWWS is provided to the greatest extent of zinc (49–56 %) and to a lesser extent by copper (26–38 %). In medium-sized cities, the contribution of zinc to the polluting potential of the UWWS is decreasing and the proportion of copper is increasing. In Brest, which is one of the major cities, the polluting potential of UWWS is mainly associated with zinc (42 %) and copper (32 %), to a lesser extent with nickel (12 %) and chromium (8 %).
About the Authors
E. N. Basalai
Institute of Nature Management of the National Academy of Sciences of Belarus
Belarus
Belarus
Ekaterina N. Basalai – Ph. D. (Geography)
17, Stafeeva Str., 224007, Brest
V. S. Khomich
Institute of Nature Management of the National Academy of Sciences of Belarus
Belarus
Belarus
Valery S. Khomich – D. Sc. (Geography), Associate Professor, Chief Researcher
10, F. Skoriny Str., 220076, Minsk
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Review
For citations:
Basalai E.N., Khomich V.S. Polluting potential of urban wastewater sludge (on the example of Brest region). Nature Management. 2025;(1):73-84. (In Russ.)
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