scholarly journals SThe Use of Ecological Risk Indicators to Assess the Degree of Pollution of Bottom Sediments of the Dzierżno Duże Water Reservoir

2019 ◽  
Vol 22 (1) ◽  
pp. 53-62
Author(s):  
Katarzyna Rozpondek ◽  
Rafał Rozpondek ◽  
◽  
Keyword(s):  
Ecological Risk ◽  
Bottom Sediments ◽  
Water Reservoir ◽  
Risk Indicators

scholarly journals Ecological risk assessment of trace metals in the bottom sediments of the young water reservoir – Bardowskiego Lagoon (Warsaw) case study

2018 ◽  
Vol 44 ◽  
pp. 00182 ◽  
Author(s):  
Malwina Tytła ◽  
Anna Dmochowska ◽  
Dariusz Dmochowski ◽  
Kinga Jaworska
Keyword(s):  
Trace Metals ◽  
Ecological Risk ◽  
Bottom Sediments ◽  
Risk Index ◽  
Water Reservoir ◽  
Contamination Factor ◽  
Potential Ecological Risk ◽  
Pollution Load Index ◽  
Pollution Load

The aim of the study was to assess the ecological risk of five trace metals, i.e. Cd, Cu, Ni, Pb, Zn, accumulated in bottom sediments of young water reservoir – Bardowskiego Lagoon located in Warsaw, Poland. In this case, several indices were used, i.e. Geoaccumulation index (Igeo), Contamination factor (CF), Potential ecological risk factor (ER), Degree of contamination (DC), Pollution load index (PLI) and Risk index (RI). The average trace metals concentrations in sediments, were as follow: Zn > Pb > Cu > Cd > Ni. The obtained results revealed that bottom sediments were very highly to extremely high contaminated by Cd and the ecological risk related with this pollutant was the largest. They also indicated that water from the study area was characterized by a low ecological quality, especially due to the content of Cd and Pb. The research proves that problem of cadmium contamination in bottom sediments of young water reservoirs is real and poses a serious ecological risk.

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

scholarly journals Application of ecological risk indicators for the assessment of Greek surficial sediments contaminated by toxic metals

2016 ◽  
Vol 188 (5) ◽  
Author(s):  
John Ν. Hahladakis ◽  
Georgia Vasilaki ◽  
Eleftheria Smaragdaki ◽  
Evangelos Gidarakos
Keyword(s):  
Ecological Risk ◽  
Toxic Metals ◽  
Risk Indicators ◽  
Surficial Sediments

scholarly journals STUDY OF THE NEOTECTONIC STRUCTURE OF THE BRATSK WATER RESERVOIR BED

2021 ◽  
Vol 12 (3S) ◽  
pp. 792-804
Author(s):  
A. G. Dmitriev ◽  
K. G. Levi ◽  
A. G. Vakhromeev
Keyword(s):  
Travel Time ◽  
Bottom Sediments ◽  
Water Reservoir ◽  
Gas Pipeline ◽  
Seismic Survey ◽  
Tectonic Activity ◽  
Horizontal Shear ◽  
Alluvial Deposits ◽  
Reservoir Area ◽  
Pipeline Section

Production of natural gas and crude oil in the eastern regions of Russia was accelerated in the past decade, and both the upstream and midstream segments of the oil and gas industry continue to grow at a fast pace. Innovative solutions are needed for engineering and construction surveys aimed to justify options for choosing routes and methods for laying underwater pipeline sections across large rivers and water reservoirs. In our region, positive experience has been gained by employing modern technologies to optimize routing and reduce the costs of detailed surveys. In the project of the Kovykta – Sayansk – Angarsk – Irkutsk gas pipeline construction, an optimal route across the Bratsk water reservoir was chosen based on the results of several stages of investigation, including continuous seismic profiling and side-scan sonar scanning of the reservoir bed. At the first stage, the mosaic maps of side-scan sonograms and a 3D digital model of the reservoir bed bathymetry were constructed and used to develop and propose three options for the gas pipeline design and its route across the reservoir area. At the second stage, detailed underwater and onshore geophysical and drilling operations were carried out along the proposed routes. Based on the transverse profiles, a decision was taken to lay the pipeline section across the reservoir area in a trench along the northern route, which was justified as an economically and technologically optimal solution. In the winter period when the water reservoir surface was covered with thick ice, the northern route was investigated in detail by drilling and seismic survey operations using vertical seismometer cable assemblies and the inverse travel time curve technique. With reference to the velocity law, the travel time sections were processed and converted into depth profiles. A petrophysical model of bottom sediments was constructed, and a scheme was developed to ensure proper processing and interpreting of seismic and acoustic data. Four structural-material complexes were identified: modern silts; underwater eluvial and alluvial deposits; disintegrated and low-strength bedrocks of the Upper Lena Formation; and unaltered bedrock sandstones and siltstones. The continuous seismic profiles and the data from the vertical seismometer cable assemblies were interpreted, and a neotectonic map of bottom sediments was constructed. By analyzing the fault kinematics, it was revealed that normal faults and reverse faults with low-amplitude horizontal shear dominated in the study area; the mapped faults were mainly rootless structures; and displacements along the faults occurred due to a laminar flow of the Cambrian salt layers. An increase in tectonic activity from north to south was explained by the correspondingly degraded strength properties of the bedrocks. Modern neotectonic structures detected from the survey results gave evidence that that the hydrostatic pressure increased after the reservoir had been filled with water, and the phenomenon of reservoir-related seismicity was observed in the study area. Based on the comprehensive geological and geophysical survey data, the geological and engineering conditions of the proposed construction sites were clarified, and the most appropriate route and design of the gas pipeline section across the reservoir area was approved. This study provided the pipeline designers with the qualitative and quantitative information on the phenomena and factors complicating the conditions for laying the gas pipeline in the study area.

STATE OF BOTTOM SEDIMENTS OF THE VORONEZH RESERVOIR IN THE PLACES OF WATER DISCHARGE FROM THE TREATMENT FACILITIES OF THE CITY OF VORONEZH

2021 ◽  
pp. 77-84
Author(s):  
Наталия Викторовна Каверина
Keyword(s):  
Bottom Sediments ◽  
Water Discharge ◽  
Water Reservoir ◽  
Urban Agglomeration ◽  
Nature Management ◽  
Cyclic Process ◽  
Left Bank ◽  
Quantitative Chemical Analysis ◽  
Treatment Facilities ◽  
The City

Рассмотрена проблема загрязнения Воронежского водохранилища в пределах Воронежской городской агломерации, в местах сброса вод с очистных сооружений предприятий левого берега. В работе использованы результаты количественного химического анализа донных отложений, выполненных на базе эколого-аналитической лаборатории факультета географии, геоэкологии и туризма Воронежского госуниверситета, а также данные мониторинга, предоставленных Федеральной службой по надзору в сфере природопользования и Департаментом природных ресурсов и экологии Воронежской области. База данных включает результаты наблюдений с 2000 по 2021 год. По составу осадков прослежена история аккумуляции загрязнителей, выделены проблемные зоны водоема в каждом исследуемом периоде. Выполнен пространственно-временной анализ содержаний загрязняющих веществ, рассчитаны «кларки концентрации» тяжелых металлов, по которым для каждой точки наблюдения в порядке возрастания значения признака построен ранжированный ряд. На основании лабораторных исследований и результатов их статистической обработки с применением корреляционного анализа сделаны выводы о перспективах существования и развития Воронежского водохранилища. Проверены корреляционные связи между «кларками концентрации» и суммой выпавших осадков за календарный и за гидрологический год. По содержаниям сероводорода в различные годы, сделаны выводы о диапазоне колебания концентраций и формировании цикличного процесса. Выделена зона устойчивой деградации водоема. Ее формирование происходит выше и ниже сброса с городских очистных сооружений левого берега города. Результаты многолетних наблюдений за качеством донных отложений указывают на значительную техногенную нагрузку со стороны Воронежской городской агломерации. Недостаточная очистка воды, медленная скорость течения и турбулентность природной воды ускоряет процесс естественного эвтрофирования водоема. The author considers the problem of pollution of the Voronezh water reservoir within the Voronezh urban agglomeration, in places of discharge of water from the treatment facilities of enterprises of the left bank. The paper uses the results of quantitative chemical analysis of bottom sediments performed on the basis of the ecological and analytical laboratory of the Faculty of Geography, Geoecology and Tourism of Voronezh State University, as well as monitoring data provided by the Federal Service for Supervision of Nature Management and the Department of Natural Resources and Ecology of the Voronezh Region. The database includes the results of monitoring from 2000 till 2021. On the basis of the composition of precipitation the author detected the history of accumulation of pollutants; as well she identified problem areas of the water reservoir in every study period. The author performed a spatio-temporal analysis of the contents of pollutants, calculated the "concentration clarkes" of heavy metals, according to which she created an ordered series for each observation point in ascending order of the attribute value. Based on laboratory studies and results of their statistical processing using correlation analysis the author draws some conclusions concerning the prospects for the Voronezh water reservoir existence and development. The correlations between the "concentration clarkes" and the amount of precipitation for the calendar and hydrological year have been verified. Based on the hydrogen sulfide content in different years, the author concludes about the range of concentration fluctuations and the formation of a cyclic process. She identified the zone of stable degradation of the water reservoir. Its formation occurs above and below the discharge from the municipal sewage treatment plants of the left bank of the city. The results of long-term observations of the quality of bottom sediments indicate a significant anthropogenic load on the part of the Voronezh urban agglomeration. Insufficient water purification, slow flow velocity and turbulence of natural water accelerate the process of natural eutrophication of the water reservoir.

scholarly journals Assessment of the ecological risk of pollution of soil and bottom sediments in the Ukrainian Danube region

2021 ◽  
pp. 137-144
Author(s):  
M Serbov ◽  
O Hryb ◽  
V Pylypiuk
Keyword(s):  
Bottom Sediment ◽  
Ecological Risk ◽  
Bottom Sediments ◽  
Plant Protection ◽  
Ecological Condition ◽  
Sediment Pollution ◽  
Risk Level ◽  
Soil Ecosystem ◽  
Danube Region ◽  
Integral Assessment

Purpose. The paper deals with assessment of the ecological risks of pollution of soil at the sites where unusable plant protection chemicals are stored, and of the bottom sediments in the Ukrainian section of the Danube and in the Danube region lakes. Methodology. The applied analytical methods and synthesis of the data obtained while monitoring the studied objects, comparing data, logical generalization and analogies in combination with expert appraisals and monographic and graphical analytic studies. Findings. It was concluded that the condition of land resources of the Danube region of Ukraine is unsatisfactory. The risk of the soil ecosystem instability in the majority of the region areas is assessed as high. The monitoring data pertaining to the sites where unusable plant protection chemicals are stored indicate that the maximum permissible concentrations of certain pollutants surpass the standards by 5.032.0 times. The ecological condition of soils is assessed as medium bad while the risks are at the level varying between considerable to high. The ecological condition of bottom sediments in the Lower Danube is assessed as satisfactory, except in Kuhurlui, Yalpuh and Kytai Lakes where it is unsatisfactory. The ecological risk level in the Ukrainian section of the Danube and in the Danube region ranges from high to considerable. Originality. For the first time ever, for the Danube region of Ukraine a comprehensive assessment of the ecological risk of soil pollution, which included assessment of the risk of instability of the soil ecosystem resulting from storage of unusable plant protection chemicals, was performed. The integral assessment of the bottom sediment pollution was made for the site located between Reni town and the Danube estuary, and in Danube Lakes. Analysis of the existing methodologies for assessment of the ecological risk of soil and bottom sediment pollution enabled to develop and apply recommendations how to use indicator values describing the ecological condition with due account of the physical degradation and pollution criteria. Practical value. The obtained results can be used for the development of a strategy of effective and sustainable management of the Ukrainian Danube regions natural resources based upon the instruments and mechanisms aimed at solution of the social and economic development problems bearing in mind possible impact of the destabilizing factors.

scholarly journals The influence of urban agglomeration on a small natural water reservoir

2018 ◽  
Vol 18 (1) ◽  
pp. 39-44
Author(s):  
Tadeusz Sobczyński ◽  
Przemysław Niedzielski
Keyword(s):  
Bottom Sediments ◽  
Natural Water ◽  
Water Reservoir ◽  
Vegetation Period ◽  
Urban Agglomeration ◽  
Protective Activity ◽  
Fish Muscles ◽  
Adverse Influence ◽  
Surrounding Areas ◽  
The City

AbstractThe aim of the study was to determine the influence of urban agglomeration on a small, natural water reservoir which, as a result of the expansion of the city of Poznań, has become an urban lake. In the vegetation period 2015, the chemistry of its water was studied, and in September additional samples of bottom sediments, plants and fish were collected for analysis in order to determine the content of heavy metals. In terms of productivity, no significant influence of the catchment was recorded. In the 1980s the lake was defined as eutrophic, and in 1996 as α-mesotrophic and such a state continues until today. This is the result of protective activity undertaken by its new owner. The adverse influence of the urbanization of the surrounding areas was reflected by the increased content of lead in particular elements of this ecosystem, that is, in bottom sediments, plants and fish muscles.

scholarly journals Behaviour of Sediments in Water Structures

2020 ◽  
Vol 15 (2) ◽  
pp. 69-74
Author(s):  
Natália Junáková ◽  
Jozef Junák
Keyword(s):  
Bottom Sediments ◽  
Water System ◽  
Water Reservoir ◽  
Sorption Process ◽  
Coarse Grained ◽  
Aqueous Environment ◽  
Technical Problems ◽  
Maximum Sorption Capacity ◽  
Small Water ◽  
High Concentrations

AbstractBottom sediments are a natural part of aquatic ecosystems. They are increasingly contributing to the deterioration of watercourses and reservoirs and are an undesirable material that causes various serious environmental and technical problems. The most significant problems include the instability of riverbeds, the transport of chemicals, nutrients and organic compounds, the supply of sediments to water reservoirs. Bottom sediments have the ability to bind to their surface various predominantly harmful substances such as heavy metals, radionuclides, nutrients and organic substances. Such sediments pose a risk to the water system in terms of possible remobilization of pollutants into the water.This paper is focused on the study of behavior of sediments in the Hervartov small water reservoir located in the east of Slovakia and their ability to adsorb phosphorus at the sediment-water interface. The results show that the efficiency of sorption of phosphorus from the aqueous environment by fine and coarse-grained sediments is the highest at the lowest input concentrations of phosphorus in solution, or at low concentrations in surface water above the sediment. At these concentrations, the amount of sorbed phosphorus by fine-grained sediments was up to almost 99%. The coarse-grained sediments sorbed phosphorus at a level of up to 84%. Increasing the concentration of phosphorus in the solution leads to a decrease in the sorption efficiency of the sediment, while at high concentrations of the sorbate, the sorption process is significantly stabilized due to reaching the maximum sorption capacity of bottom sediments.

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