scholarly journals Hazardous substances in karst aquifer waters - one of the results of the operational monitoring of groundwater in Serbia

2020 ◽  
Vol 81 (2) ◽  
pp. 49-61
Author(s):  
Zoran Stevanovic ◽  
Veljko Marinovic ◽  
Branislav Petrovic
Keyword(s):  
Water Quality ◽  
Environmental Protection ◽  
Karst Aquifer ◽  
Colloidal Suspensions ◽  
Field Measurements ◽  
High Water ◽  
Hazardous Substances ◽  
Chemical Components ◽  
Protection Measures ◽  
Operational Monitoring

Hydrogeological survey of wider Majdanpek mining area in the Carpathian mountain arch of eastern Serbia, including open mine pits, tailings sites, and major karstic springs and caves has been undertaken in order to estimate environmental conditions in groundwater body (GWB) ?Krs?sever?, groundwater quality, and to investigate causes of their earlier indicated poor chemical status. Bearing in mind that Majdanpek copper mine field is directly bordering the karst aquifer and delineated GWB ?Krs?sever?, the two karst springs namely Valja Fundata and Kaludjerica were in situmeasured and sampled in high and low-water periods (spring 2019, late autumn 2019 and spring 2020). Sampling and analysis of groundwater were carried out under the frame of project ?Operational Monitoring of Groundwater of the Republic of Serbia?, established by the Ministry of Environmental Protection of Serbia. The field measurements of unstable chemical components and physical properties as well as laboratory analyses confirmed very poor and even hazardous water quality of both surveyed springs Valja Fundata and Kaludjerica. Registered concentrations of some ions, such as Fe2+, Mn2+, Ca2+, SO4 2?are high above maximal permitted level for potable water in Serbia. High turbidity rate also confirms impact of colloidal suspensions from the tailing which is located in karstic blind valley. Leakage of mine water passes through joints, open cavities and even large cave system Valja Fundata. Results of undertaken survey confirm that low-water period results with worse water quality and much higher concentration of hazardous substances than that characterized high-water season when infiltrated rainy water and/or melted snow dilute tailing?s wastewater. Strict application of environmental protection measures and de - sign/construction of the smaller water treatment facility at both surveyed springs should possibly mitigate the impacts of mining activities to karst groundwater and dependant ecosystem.

scholarly journals ENVIRONMENTAL PROTECTION SYSTEM OF MINING AND ENERGY COMPLEXES BASED ON THE USE OF THE AHP METHOD FOR THE RANKING OF INDICATORS AND WATER POLLUTION EFFECTS

2017 ◽  
Vol 7 (2) ◽  
Author(s):  
Jelena Malenović-Nikolić
Keyword(s):  
Water Quality ◽  
Environmental Protection ◽  
System Modelling ◽  
Analytic Hierarchy ◽  
Pollution Effects ◽  
Protection Measures ◽  
Energy Complex ◽  
Operational Activities ◽  
Complex Indicators ◽  
Hierarchy Process

The use of the Analytic Hierarchy Process (AHP) methodology for the assessment of mining and energy complex impact on water quality involves the ranking of key environmental aspects and the prioritization of environmental protection measures. This paper reduces the choice of indicators to four dominant effects of operational activities, which to the largest extent disturb the quality of basic environmental elements. The criteria were developed with the aim to facilitate the comparison of results from multiple mining and energy complexes, improve safety system modelling, and facilitate the assessment of the effects of critical operational activities on water quality. Key words: environmental, energy complex, indicators, safety engineering, water

scholarly journals Analysis of environmental problems for the Barada River basin in Syria and recommended water protection measures

2021 ◽  
Vol 78 (3) ◽  
pp. 40-45
Author(s):  
Hala Kabtoul
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Environmental Protection ◽  
River Water ◽  
Rural Areas ◽  
Human Activities ◽  
Environmental Problems ◽  
Water Protection ◽  
River Ecosystem ◽  
Protection Measures

Barada Basin, where the capital of Syria, Damascus, is located, and hence where most of the human activities are concentrated, suffers from serious environmental problems due to the migration from rural areas, illegal settlements, industrialization, urbanization, and overexploitation of environment. Huge amounts of wastewater (domestic, industrial, and agricultural) are discharged every day to the landscape as well as into Barada and Awaj Rivers without sufficient treatment. This paper is devoted to the water pollution issues in Barada Basin. River water quality has been analyzed, some studies on the assessment of pollution in the Barada River are presented, environmental protection measures and restoration of the river ecosystem are recommended.

scholarly journals GEOECOLOGICAL STATE OF THE RIVER OKONKA BASIN AND ITS OPTIMIZATION

2021 ◽  
Vol 51 (2) ◽  
pp. 164-171
Author(s):  
Vasyl Fesiuk ◽  
Andrij Slusarchuk
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Environmental Protection ◽  
River Basin ◽  
Pollution Monitoring ◽  
Anthropogenic Activity ◽  
Geological Condition ◽  
Protection Measures ◽  
Drainage Systems ◽  
The Impact

The impact of economic activity on the environment can best be traced in the scale of small river basins. One of such rivers is the Okonka River, which flows through the territory of the former Manevychi (Kamin-Kashyrskyi according to the new administrative-territorial structure) district. Among the environmental problems of the basin, the most acute are: surface water pollution due to runoff from agricultural fields, livestock farms, unauthorized landfills, etc. Improving the geo-ecological condition of the Okonka River basin on the basis of ecologically safe sustainable development is an urgent problem of the territory's development. The Okonka River Basin is one of the least explored regions of the Volyn Region. Materials from the Regional Office of Water Resources in Volyn Oblast, the Department of Ecology and Natural Resources of the Volyn Oblast State Administration, own expeditionary research, cartographic materials, electronic maps (Google Map, OpenStreetMap) and satellite images were used to prepare the publication. Also, more than 20 literature sources and electronic resources, laws and regulations of Ukraine in the field of rational use and protection of water resources were developed. The following methods were used during the research: collection and processing of archival, literary, graphic, cartographic and tabular material, regime quantitative and qualitative observations of river characteristics; field research of channel processes; mathematical and engineering calculations, mathematical modeling, analysis of anthropogenic impact on water resources of the studied region, constructive-geographical method and method of expert assessments. The natural conditions of the basin contribute to the settlement and development of the economy. Particularly favorable are the terrain, climate, inland waters. Within the basin there are 7 objects and territories of the nature reserve fund. The impact of anthropogenic activity on the river basin is quite significant. This is due to intensive agricultural and residential use, the development of drainage reclamation. The level of radiation pollution is assessed as "satisfactory", the use of land resources - "close to normal. The water quality of the Okonka River in the upper line (leak) is assessed by the second class of the third category (water is quite good in quality, quite clean in purity). The environmental index is 2.92. Environmental protection measures are proposed to improve the geoecological condition of the river basin. The complex of environmental protection measures should include: development of a local eco-network; creation of new and expansion of the network of existing nature reserves; improvement of the situation with waste management, elimination of spontaneous dumps; monitoring of soils to protect them from degradation and pollution; monitoring of surface waters in order to protect them from depletion and pollution; an inventory of drainage systems in order to establish the feasibility of further use in agricultural separate areas, the allocation of parts of the drainage systems that can be renaturalized in the future; prevention of peat and forest fires. Key words: river, river basin, geological condition of the river basin, geographical features of the basin, ecological assessment of river water quality, measures to improve the geoecological condition of the basin.

Environmental Considerations for Pipeline Abandonment: A Case Study From Abandonment of a Southern Alberta Pipeline

2010 ◽  
Author(s):  
Jessica M. Swanson ◽  
Tom Kunicky ◽  
Pete Poohkay
Keyword(s):  
Land Use ◽  
Environmental Protection ◽  
Environmental Sustainability ◽  
Planning Process ◽  
High Water ◽  
Technical Condition ◽  
Primary Objective ◽  
Protection Measures ◽  
Sediment Control

Since the 1920s, over 400,000 km of petroleum pipelines have been installed in Alberta. Pipeline abandonment is an increasingly relevant issue as the pipeline network ages. The full or partial abandonment of pipeline systems is necessitated by factors such as wind or water erosion issues, pipeline integrity issues, changes in source supply and customer demand, urban development encroachment and regulatory requirements. Pipeline abandonment-in-place is generally the preferred option based on the technical condition and environmental sustainability of the pipeline, however, in some cases pipeline removal or partial removal cannot be avoided. In all cases, the planning process for abandonment includes technical evaluation, risk assessment, environmental assessment, landowner consultation and/or evaluation of future land use. Abandonment plans must also include environmental protection measures to be implemented during the removal of any pipeline segment and consideration of the post-abandonment implications of any pipeline left in place. These measures include topsoil conservation, erosion/sediment control and reclamation. This paper discusses environmental protection measures for pipeline abandonment, using issues faced during abandonment of one of the oldest natural gas pipelines in Alberta as a case study. Challenges faced during this project included gathering of appropriate historical information including leak history and maintenance records, removal of all aboveground facilities, accommodations for future land use plans including road development and measures taken to minimize the risk of the abandoned pipeline becoming a water conduit. In addition, the paper will discuss the extensive planning and construction effort required to undertake pipeline abandonment at several fish-bearing watercourse crossings, where pipeline exposures during high water events necessitated pipeline removal. A primary objective in the planning and the removal of the abandoned pipeline was minimal disturbance of the land.

scholarly journals ДИНАМІКА ВМІСТУ НІТРОГЕНОВМІСНИХ СПОЛУК У ГІДРОЕКОСИСТЕМАХ РІЧОК ПРИП’ЯТЬ ТА ТУРІЯ

2019 ◽  
Vol 76 (2) ◽  
pp. 58-63
Author(s):  
H. B. Humeniuk ◽  
O. S. Voloshun ◽  
V. O. Khomenchuk ◽  
N. G. Zinkovska N. G. Zinkovska N. G. Zinkovska
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Environmental Protection ◽  
Human Activity ◽  
Environmental Assessment ◽  
Municipal Wastewater ◽  
Anthropogenic Pressure ◽  
Protection Measures

Nowadays the majority of rivers in Ukraine in general and the Volyn region in particular are contaminated as environmental protection measures are not taken. The Turia and Prypiat Rivers also suffer from human activity. They have recently undergone considerable anthropogenic pressure, which caused water pollution with industrial, municipal wastewater, deterioration of water quality, overgrowth of the bed, flowering of water, etc. In this regard, the assessment of water quality is extremely important. Concentrations of nitrogen of ammonium nitrites in investigated reservoirs are within the limits of MPC. Targeted environmental assessment of the water quality of the Turia and Prypyat rivers has been carried out.

Large-scale spatial characterization of a karst aquifer by combination of periodic and non-periodic responses (Lez aquifer, France)

2021 ◽  
Author(s):  
Pierre Fischer ◽  
Hervé Jourde
Keyword(s):  
Large Scale ◽  
Karst Aquifer ◽  
Property Values ◽  
Field Measurements ◽  
High Water ◽  
Distributed Model ◽  
Inversion Method ◽  
Spatial Characterization ◽  
The Matrix

<p>Spatial characterization of the hydraulic properties in the subsurface is an extensively studied problematic. Inverse problems allow to image those properties by interpreting the information from a dataset of field measurements with a chosen physical formulation of fluxes in a numerical distributed model. However, karst media characterization remains a complex task, due to the fact that the matrix and conduits entities generate a highly contrasted distribution of property values. Thus, one needs to employ an inversion method able to represent this contrast and also use data providing information on the localization of the conduits network and its connectivity.</p><p>We propose a large-scale 2-D application of characterization of the Lez aquifer in southern France, covering a surface of about 400 km². We take advantages of long-terms measurements within the framework of the MEDYCYSS observation site, part of the Karst observatory network (www.snokarst.org) initiated by the French institute INSU/CNRS. Drawdown signals measured in 14 wells incorporating a periodic response due to a daily pumping at the aquifers spring were thus considered for this study. The periodic responses can provide connectivity information between wells in the inversion process, while non-periodic responses will permit to better assess the large-scale property values of the whole hydrosystem. A Cellular Automata-based Deterministic Inversion (CADI) is used to generate a contrasted property field able to reproduce the measured signals in the 2-D distributed numerical model. This application is led with responses obtained at a high water-table level and also at a lower level in order to highlight the change in connectivity and flow paths mobilized at different depths.</p>

Nutrient Input and Trophic Status of the “Neue Donau”, a High-Water Control System along the River Danube in Vienna, Austria

1990 ◽  
Vol 22 (5) ◽  
pp. 137-144 ◽  
Author(s):  
M. T. Dokulil ◽  
G. A. Janauer
Keyword(s):  
Water Quality ◽  
Control System ◽  
Trophic Status ◽  
High Water ◽  
Nutrient Concentrations ◽  
Nutrient Input ◽  
Water Control ◽  
Trophic Conditions ◽  
River Danube ◽  
High Nutrient

The system “Neue Donau” functions as a control system for high waters of the river Danube and is an important recreational area for many people. Water quality and trophic status of the water body is thereforeof prime importance. The high nutrient concentrations of the river Danube (P-tot 238±41µg/l, N-tot 2.53±0.78 mg/l) reach the system via groundwater seepage. Present conditions in the basin of Neue Donau are,as a result of this nutrient in-flux,eutrophic to hypertrophic. Average values during the summer period have declined from 366 µg/l total phosphorus to 78 µg/l, and from 86 µg/l chlorophyll-a tol7µg/l between the years 1985 and 1988. However, a dam which is planned in the river at Vienna will permanently raise the water level of the river thus increasing the the groundwater flow in the direction to the Neue Donau and therefore the nutrient input which will enhance trophic conditions in the impoundment. Since macrophytes play an important role in one part of the system macrophyte management together with measures along the river are some of the suggested strategies to keep the system Neue Donau at acceptable trophic conditions and good water quality.

scholarly journals Integration of Remote Sensing and Mexican Water Quality Monitoring System Using an Extreme Learning Machine

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4118
Author(s):  
Leonardo F. Arias-Rodriguez ◽  
Zheng Duan ◽  
José de Jesús Díaz-Torres ◽  
Mónica Basilio Hazas ◽  
Jingshui Huang ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Extreme Learning Machine ◽  
Monitoring System ◽  
Field Measurements ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Chl A ◽  
Learning Machine ◽  
Level 2

Remote Sensing, as a driver for water management decisions, needs further integration with monitoring water quality programs, especially in developing countries. Moreover, usage of remote sensing approaches has not been broadly applied in monitoring routines. Therefore, it is necessary to assess the efficacy of available sensors to complement the often limited field measurements from such programs and build models that support monitoring tasks. Here, we integrate field measurements (2013–2019) from the Mexican national water quality monitoring system (RNMCA) with data from Landsat-8 OLI, Sentinel-3 OLCI, and Sentinel-2 MSI to train an extreme learning machine (ELM), a support vector regression (SVR) and a linear regression (LR) for estimating Chlorophyll-a (Chl-a), Turbidity, Total Suspended Matter (TSM) and Secchi Disk Depth (SDD). Additionally, OLCI Level-2 Products for Chl-a and TSM are compared against the RNMCA data. We observed that OLCI Level-2 Products are poorly correlated with the RNMCA data and it is not feasible to rely only on them to support monitoring operations. However, OLCI atmospherically corrected data is useful to develop accurate models using an ELM, particularly for Turbidity (R2=0.7). We conclude that remote sensing is useful to support monitoring systems tasks, and its progressive integration will improve the quality of water quality monitoring programs.

scholarly journals Evaluation of Groundwater Using an Integrated Approach of Entropy Weight and Stochastic Simulation: A Case Study in East Region of Beijing

2021 ◽  
Vol 18 (14) ◽  
pp. 7703
Author(s):  
Yongxiang Zhang ◽  
Ruitao Jia ◽  
Jin Wu ◽  
Huaqing Wang ◽  
Zhuoran Luo
Keyword(s):  
Water Quality ◽  
Stochastic Simulation ◽  
Water Quality Index ◽  
Quality Index ◽  
Integrated Approach ◽  
Total Hardness ◽  
Chemical Components ◽  
Wet Season ◽  
Entropy Weight ◽  
Weakly Alkaline

Groundwater is an important source of water in Beijing. Hydrochemical composition and water quality are the key factors to determine the availability of groundwater. Therefore, an improved integrated weight water quality index approach (IWQI) combining the entropy weight method and the stochastic simulation method is proposed. Through systematic investigation of groundwater chemical composition in different periods, using a hydrogeochemical diagram, multivariate statistics and spatial interpolation analysis, the spatial evolution characteristics and genetic mechanism of groundwater chemistry are discussed. The results show that the groundwater in the study area is weakly alkaline and low mineralized water. The south part of the study area showed higher concentrations of total dissolved solids, total hardness and NO3−-N in the dry season and wet season, and the main hydrochemical types are HCO3−-Ca and HCO3−-Ca-Mg. The natural source mechanism of the groundwater chemical components in Chaoyang District includes rock weathering, dissolution and cation exchange, while the human-made sources are mainly residents and industrial activities. Improved IWQI evaluation results indicate that water quality decreases from southwest to northeast along groundwater flow path. The water quality index (WQI) method cannot reflect the trend of groundwater. Sensitivity analysis indicated that the improved IWQI method could describe the overall water quality reliably, accurately and stably.

Sign in / Sign up

Export Citation Format

Share Document