Rating Water Quality in Sevastopol Bay by the Fluxes of Pollutant Deposition in Bottom Sediments

2018 ◽  
Vol 45 (2) ◽  
pp. 222-230
Author(s):  
V. N. Egorov ◽  
S. B. Gulin ◽  
L. V. Malakhova ◽  
N. Yu. Mirzoeva ◽  
V. N. Popovichev ◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Pollutant Deposition ◽  
Sevastopol Bay

CURRENT STATE OF WATER QUALITY AND BOTTOM SEDIMENTS IN LAKE DONUZLAV

2018 ◽  
Vol 1 (1) ◽  
pp. 32-38
Author(s):  
S.S. Zhugaylo ◽  
T.M. Avdeeva ◽  
M.N. Pugach ◽  
E.N. Adzhiumerov
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Current State ◽  
State Of Water

scholarly journals Peculiarities of Macro- and Microelement Accumulation in Bottom Sediments of the Crimean Coastal Water Areas (the Black Sea) with Different Water Exchange Intensity based on XRF Data

2021 ◽  
Author(s):  
E. A. Kotelyanets ◽  
Keyword(s):  
Black Sea ◽  
Bottom Sediments ◽  
Water Exchange ◽  
Fluorescence Analysis ◽  
The Black Sea ◽  
Geochemical Background ◽  
Local Pollution ◽  
Kerch Strait ◽  
Sevastopol Bay ◽  
High Concentrations

The paper analyzes content and spatial distribution peculiarities of macro- and microelements in the bottom sediments of Sevastopol bays, Feodosiya Gulf and Kerch Strait. Bottom sediment sampling was performed from 2005 to 2008 as well as in 2015, 2016, and 2018. Concentrations of macro- (Ti, Fe, Mn) and microelements (As, Pb, Zn, Cu, Ni, Co, Cr, V, Sr) were studied by X-ray fluorescence analysis using Spectroscan MAKS-G spectrometer. The maximal content of Cr, Co, Ni, Zn, Pb, Sr exceeding the geochemical background was found in the water areas with difficult water exchange, which include bays of the Sevastopol region under intense anthropogenic influence: the Yuzhnaya Bay, Gollandiya Bay and Kilen-Bay. In the Kazachya Bay, the least polluted in the Sevastopol bay system, the content of Cr, Co, Ni, Zn, Pb, As, Sr also exceeded their geochemical background. As illustrated by the Balaklava Bay, the paper shows the influence of local pollution sources (the Balaklavka River runoff and municipal waste water) on the microelement distribution. Sevastopol bays are characterized by high concentrations of the studied elements in the bottom sediments. In the water areas with active water exchange, i. e. Feodosiya Gulf and Kerch Strait, concentration of the studied elements, except for Ni, Zn and Cr, did not exceed on the average the geochemical background of the open Black Sea shelf areas.

scholarly journals Biogeochemical characteristics of the Sevastopol Bay sedimentation self-purification from radionuclides, mercury and chlorogenic contaminants

2018 ◽  
Vol 3 (2) ◽  
pp. 40-52 ◽  
Author(s):  
V. N. Egorov ◽  
S. B. Gulin ◽  
L. V. Malakhova ◽  
N. Yu. Mirzoyeva ◽  
V. N. Popovichev ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Marine Ecosystems ◽  
Concentration Coefficient ◽  
Chemical Pollutants ◽  
Sevastopol Bay ◽  
Using Data ◽  
Sedimentation Processes

The work is focused on the study of characteristics of sedimentational self-purification from radioactive and conservative chemical pollutants in Sevastopol Bay waters. Using data on the distribution of 90Sr, 137Cs, 239,240Pu, 210Po, Hg, ΣPCB5, and ΣDDT in the surface (0–5 cm) layer of bottom sediments in different areas of the bay, it is shown that the concentrating ability of living and inert matter concerning contaminants (characterized by the concentration coefficient) is one of the major parameters in realization of biogeochemical mechanism of water self-purification. The effect of sedimentation processes is aimed at maintaining the radionuclides and chemical homeostasis of marine ecosystems by the Le Chatelier – Brown principle. Hg, ΣPCB5 and ΣDDT are shown to be the main pollutants of Sevastopol Bay waters at present.

AVAILABILITY OF NUMERICAL MATHEMATICAL MODELS TO SOLVE THE APPLIED PROBLEMS OF WATER QUALITY MANAGEMENT OF SHELF ECOSYSTEMS

2017 ◽  
Author(s):  
Kira Slepchuk ◽  
Kira Slepchuk ◽  
Tatyana Khmara ◽  
Tatyana Khmara
Keyword(s):  
Water Quality ◽  
Water Quality Management ◽  
Environmental Parameters ◽  
Biogenic Elements ◽  
Quality Model ◽  
Impurity Transport ◽  
Initial Stage ◽  
Sevastopol Bay ◽  
Phytoplankton Variability ◽  
Result Interpretation

The problems appeared during development and calibration of one-dimensional (vertical resolution) biogeochemical block of water quality model, are discussed. It is extremely useful in the initial stage of shelf ecosystems research because of its simplicity in as implementation as result interpretation. To describe the environmental parameters dynamics we used the Model for Estuarine and Coastal Circulation Assessment, which consists of hydrodynamic model; model of conservative impurity transport; chemical and biological model. The seasonal of biogenic elements and phytoplankton variability in the Sevastopol Bay is studied as an example.

Polarography of the bottom sediments in the Sevastopol Bay

2009 ◽  
Vol 19 (2) ◽  
pp. 111-123 ◽  
Author(s):  
N. A. Orekhova ◽  
S. K. Konovalov
Keyword(s):  
Bottom Sediments ◽  
Sevastopol Bay

Assessment of Water Quality and State of Bottom Sediments of the Northern Part of the Rybinsk Reservoir by Emissions of the CherMK PAO "Severstal"

2019 ◽  
Vol 23 (10) ◽  
pp. 39-43 ◽  
Author(s):  
K.Yu. Mikhaylichenko ◽  
A.I. Kurbatova ◽  
A.Yu. Dorontsova ◽  
A.A. Paukova
Keyword(s):  
Water Quality ◽  
Adverse Effect ◽  
Metallurgical Plant ◽  
Bottom Sediments ◽  
Rybinsk Reservoir ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
The Rybinsk Reservoir

The quality of the water and bottom sediments of the Rybinsk Reservoir, on the adjacent territory of which the Cherepovetskiy Metallurgical Plant PJSC “Severstal” is located, which has an adverse effect on the state of the water body is investigated. The pollution of water and bottom sediments by the metallurgical plant in the northern part of the Rybinsk reservoir was assessed in connection with the planned construction of a pulp and paper mill (PPM) at the site of the study.

scholarly journals The Process of Microbiological Remediation of the Polluted Słoneczko Reservoir in Poland: For Reduction of Water Pollution and Nutrients Management

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3002
Author(s):  
Jakub Mazurkiewicz ◽  
Agata Mazur ◽  
Robert Mazur ◽  
Krzysztof Chmielowski ◽  
Wojciech Czekała ◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Surface Water Quality ◽  
Organic Content ◽  
Water Transparency ◽  
Water Remediation ◽  
Polluted Water ◽  
High Concentration ◽  
Effective Microorganisms ◽  
The Impact

The article discusses the impact of nutrients from sewage on the state of the sewage receiver. Bioremediation was carried out through the use of effective microorganisms. The potential recovery of valuable mineral and organic substances in the form of fertilizers was also examined. The Słoneczko Reservoir is a bathing area and serves many people in the summertime as a place of water recreation. Water quality deteriorated intensively from 2006 as a result of illegal wastewater discharge and the impact of fecal pollution from bathers. The high concentration of nutrients in the water was the cause of the eutrophication process and blooms of cyanobacteria, which pose a threat to human health in the bathing area. The bathing area was also closed many times by sanitary services as a result of exceeding the number of Escherichia coli and Enterococcus faecalis in the water. At the bottom of the reservoir, there was a layer of sediments with a thickness of 30–70 cm. Thus, the processes of anaerobic decomposition generated odor, causing nuisance in the reservoir area. Water transparency varied from 30 to 50 cm, due to the accumulation of suspensions and biomass of planktonic algae. The reservoir was subjected to microbiological bioremediation in 2017 and 2018 to polluted water treatment and to reduce the organic content of bottom sediments. Already after the first application of biopreparations putrefactive odors and the eutrophication process disappeared at the end of the 2017 summer season. Bioremediation reduced the value of E. coli and E. feacalis to the acceptable level. After the second application in 2018, the organic fraction of the bottom sediments was reduced to a very low level and the water transparency reached the bottom (maximum depth was 2.2 m) throughout the entire bathing area. The effect of the water remediation was maintained until 2019, and the surface water quality remained at a very good level. An important aspect in this case is also the exploitation of bottom sediments, because they are rich in nutrients and organic matter, and therefore it may have some potential as a fertilizer. The recovery of nutrients can be used in plant or pot production. However, they contain compounds that degrade quickly, causing unpleasant odors and threatening the environment. Thus, they should be managed and handled in an environmentally friendly and sustainable way.

scholarly journals Contemporary Problems of the Surface Waters Quality Assessment, Regulating and Monitoring

2018 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Bottom Sediments ◽  
Natural Waters ◽  
Developed Countries ◽  
Living Condition ◽  
Regulation System ◽  
Chemical Information ◽  
Water Sector ◽  
Water Strategy

Water resources protection and rehabilitation to the ecologicallly favorable living condition is one of the main tasks of Water Strategy of the RF till 2020. This task cannot be considered fulfilled. This article analyses the reasons of the situation. Several broblems are discussed: insufficient scientific support of the natural waters quality assessment methods, state of the quality management (regulating) system, lack of the advanced and adequate monitoring system, and lack of funding for the purposes of water protection. It has been shown that scientific/methodological basis for natural waters quality assessment and management focused on the MPC system and the discharges statistics according to the 2-TP (vodkhoz) pattern is obsolete and out-dated. No monitoring of micro-pollutants, zenobiotic first of all, is done. Practically, there is no monitoring of bottom sediments. Thechnology of hydro/chemical information processing is not developed. Any requirements to the disposed water quality should take into account the background concentrations different for water bodies located in different physical/geographic and climatic zones. The order of procedure for transition from the current discharge regulation system on the basis of NDS to the system based on NDT is not worked out. There are no norms of the pollutants content in bottom sediments. It has been proposed to apply information techniques for assessment of the xenobiotic pollution on the basis of the biological activity forecast for PASS and GUSAR compounds. All units of the water sector are to use computer information/calculating systems provided with the advanced model of water basins and their sections in order to change radically the situation with water sector funding. It seems that one of the possible ways of the water quality regulating problems is the transition to the risk-oriented approach which is actively used in the legislative regulation systems of the developed countries.

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