Wyniki wyszukiwania - BazTech

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Klasyfikacja stanu przybrzeżnych wód morskich na Ukrainie na przykładzie Morza Azowskiego w rejonie Mariupola

Neverova-Dziopak E., Dan O.

Ochrona Środowiska

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2018

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Vol. 40, nr 3

29--34

EN

The Sea of Azov is the smallest and shallowest sea in the world with low salinity. Such properties determine its susceptibility to degradation due to anthropogenic activities. The Azovstal Iron & Steel Works in Mariupol (Ukraine) is one of the main sources of pollution of the Azov Sea. Adverse impact of the steelworks is associated primarily with the large amount of technological and cooling wastewater discharged into the sea. The paper presents the impact assessment results of wastewater discharge on the sea water quality and the ecological conditions in the discharge zone. The assessment was performed using local Ukrainian methodologies as well as applicable surface water quality standards. The comprehensive assessment was based on the three numerical integrated indicators of sea water quality: the Water Quality Index (WJW), the Water Pollution Index (WZW), the Integrated Ecological State Index (ZWSE), and the so called principle of aggregation. Based on the assessment results it was demonstrated that the wastewater discharge from the Azovstal Iron & Steel Works leads to significant increase in water pollution in the coastal zone which brings threat to the marine ecosystem and limits all types of water consumption.

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Analysis of Mariupol Metallurgical Enterprises Influence on Ecological State of Surface Waters

Dan O., Neverova-Dziopak E., Butenko E., Kapustin A.

Geomatics and Environmental Engineering

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2017

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Vol. 11, no. 1

25--31

EN

This paper deals with the problem of environmental impact of metallurgical enterprises on ecological state and water quality of the Kalchyk and Kalmius rivers and the coastal zone of the Sea of Azov (Ukraine). These metallurgical enterprises Azovstal Iron & Steel Works and Ilyich Iron and Steel Works are situated in Mariupol city within the catchment area of the examined water bodies.

PL

W artykule przedstawiono analizę wpływu zakładów hutniczych na stan ekologiczny i jakość wody rzek Kalczyk i Kalmius oraz strefy przybrzeżnej Morza Azowskiego. Zakłady hutnicze Azovstal Iron & Steel Works oraz Ilyich Iron and Steel Works znajdują się w Mariupolu i są usytuowane w zlewisku badanych akwenów wodnych.

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The Assessment of the Surface Water Quality Using the Water Pollution Index: A Case Study of the Timok River (The Danube River Basin), Serbia

Brankov J., Milijašević D., Milanović A.

Archives of Environmental Protection

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2012

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Vol. 38, no. 1

49-61

EN

The Timok River (202 km long, 4547 km2 basin area) is located in East Serbia. It is a right tributary of the Danube River and one of the most polluted watercourses in Serbia. On the basis of the data provided by the Republic Hydrometeorological Service of Serbia, the paper presents an analysis of water quality and pollution using the combined physico-chemical WPI index (Water Pollution Index) calculated for two periods - 1993-96 and 2006-2009 at four hydrological stations: Zaječar-Gamzigrad (Crni Timok River), Zaječar (Beli Timok River), Rgotina (Borska Reka River) and Čokonjar (Timok River). The following parameters were taken into consideration: dissolved O2, O2 saturation, pH, suspended sediments, Five Day Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (CODMn), nitrites, nitrates, orthophosphates, ammonium, metals (Cu, Fe, Mn, Hg, Ni, Zn, Cd), sulphates and coliform germs. The average WPI values were calculated for the observed periods based on the comparison of the annual average values of the listed parameters and defined standard values for the I water quality class (according to the Regulation on the Hygienic Acceptability of Potable Water of the Republic of Serbia). The highest pollution degree was recorded in the Borska Reka River, where heavy metal levels (especially manganese and iron) were significantly increased. These metals are indicators of inorganic pollution (primarily caused by copper mining). Also, increased values of the organic pollution indicators (ammonium, coliform germs, Five-Day Biological Oxygen Demand - BOD5) in the Borska Reka and the Timok rivers are the result of uncontrolled domestic wastewater discharge.