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The application of reactive materials in the form of a Deep Permeable Reactive Barrier during and after coal conversion constitutes an innovative concept of protecting the environment from georeactor influence. The reactive materials filling the post-process cavern will make it possible to remove or immobilise the gaseous and liquid contaminants that may be subject to leaching, while also reinforcing rock mass stability. The article pays particular attention to the technical and legal possibilities for reactive ma...

Underground waters in St. Petersburg are strategic reserve of drinking water. Dense urban development, motor transport and industrial enterprises directly affect the quality of groundwater. In addition, groundwater can also carry pollutants into the Gulf of Finland. The main purpose of this article was to assess the state of groundwater in the coastal part of St. Petersburg. The study was based on the processing of laboratory analyzes primary results of water samples collected in the framework of state monitoring ...

It is very useful to use technologies of various fields. An important position in the field of knowledge engineering and knowledge technologies is the so-called decision support systems. The paper gives an overview of this highly exploited field of modern information technology applications, provides basic information on such systems, their architecture, the possibilities of their application, and some typical uses in the field of water management. Questions concerning effects and contradictions of multipurpose wa...

The aim of the study was to present of phosphorus and nitrogen migration direction in the flow - through lakes system by mathematical relationships. Mathematical models included the water flow at the inlet and outlet of the lakes, the residence time of lake, the phosphorus and nitrogen concentration in the water and bottom sediment, the size of nutrient release from bottom sediments. The models of P and N retention for lakes of upper Pas??ka indicate that the retention of nutrients in flow - through lakes is prima...

Due to the occurrence of unfavorable phenomena of droughts and water scarcity in Poland, actions aimed to preserve and improve the state of water resources, such as the realization of small water retention, are considered valued. Small water retention contributes to the mitigation of the effects of water resources defficiency and fulfills a variety of functions influencing natural environment, farming and forestry. The paper aims to determine the level of implementation of small water retention programmes in Polan...

Biological wastewater treatment is part of biotechnology and represents a method by which dissolved organic impurities and colloid suspensions in wastewater are transformed by microorganisms in inoffensive degradation products (carbon dioxide, water, other products) and in new cell mass (biomass). All the biological processes are influenced by temperature, because micro-organisms activity and oxygen solubility depends on it and on pressure, too. The optimal temperature for biological treatment is between 10 and 30...

In many industrial processes, it is necessary to separate the solid phase from water or an aqueous solution. Gravitational methods are often used for this purpose (beneficial energetically), e.g. a sedimentation process. However, due to the low efficiency of the classical sedimentation process, it is necessary to intensify this process, e.g. by means of a coagulation process or flocculation process. The effectiveness of the coagulation process depends on a number of factors: dose and type of coagulant, type and co...

Urban areas focusing on nature protection are facing many problems. The basic problem of urbanized areas is the management of rainwater. The concentration of pollutants is most problematic in rainwater. After the impact of rainfall on surfaces occurs immediate contamination of surface contamination. This pollution is then necessary to clean or somehow arrange prevent their infiltration in groundwater or river network. Such contaminants include heavy metals, for example. In our research, we focus on the analysis of...

The use of the remote sensing in order to monitor the morphological parameters of littoral beaches must generate the support data and information for management of concrete environmental assessment in different situations, including evolution of the hydrodynamic models?extensions for the adjacent areas of maritime or fluvial ports. The result of rapid Geo-referencing, encompassed in the spatial data processing providesthe support for an adequate spatial analysis of the high resolution coastal/marine imagery. The r...

Hydrogeologists are interested in borders that separate the groundwater recharge, transit, discharge (RTD) areas. Unfortunately, no good method exists for finding them. In the course of using the hydrogeological model (HM) of Latvia (LAMO) scientists of Riga Technical University have developed the new method that generalizes the RTD concept and gives locations of the borders. LAMO is run by the commercial program Groundwater Vistas (GV). The GV program provides the velocities vz for the vertical and vx, vy for the...

Water can be found everywhere and plays an important role in human life and equilibrium of the environment. The agriculture, industry and urbanization have had and have a special impact on the biodiversity and water necessity. To establish the line at which a pressure is considered significant, meaning if due to this pressure the surface water do not reach ?good status? it will be made an analysis of pressure and impact on the recommendation of the Water Framework Directive and national methodologies, but taking i...

The mouth areas of the seas are the most interesting and complex objects for studying the distribution of pollutant flows and the factors of their formation. Different approaches can be used to identify pollutant flows and the role of the geochemical barriers, in particular the analysis of the distribution of marker compounds that most clearly reflect the pollution levels themselves and possible sources of their entry into the components of the aquatic systems. Polycyclic aromatic hydrocarbons (PAHs) are considere...

The research object was the D?ugie Lake in Olsztyn (north-eastern Poland) (area 26.8 ha, maximum depth 17.3 m). It is a stratified, bradimictic urban lake - a depth index of 0.3 indicates a deep recess of the lake's bowl in the ground. In the past, the lake was almost completely degraded as a result of the discharge of raw domestic sewage. After applying two methods of restoration (artificial aeration with destratification and the phosphorus inactivation), the quality of lake water was improved. The data of multia...

The article analyzes the thermal and humidity conditions of the ?arnowska Peatland, which is part of a larger complex of raised bogs located in the coastal zone of the Baltic Sea in Poland. The research was carried out on the basis of long-term changes in air temperature, atmospheric precipitation and field evaporation (1951-2015) from the synoptic station in ?eba. The mentioned indicators were used to determine their impact on the formation of seasonal variability of groundwater level on the peat bog. The climati...

Health and working efficiency of river and marine craft crews depend largely on the quality of drinking water. In this respect, autonomous water treatment systems for ships are of extreme importance, which should be efficient, reliable, and safe providing required quality of drinking water by all chemical and microbiological indicators. The article analyzes existing methods of cleaning, disinfecting and conditioning drinking water for ships. Methods of maintaining drinking water quality during prolonged storage in...

Contribution of water use, other types of economic activities and natural features to the water pollution is still unclear. Previous researches outlines also that anthropogenic factors affecting water quality in urban areas differ from those in rural areas. The purpose of this study is to identify effects on freshwater resources from urban water use in the Yamal-Nenets Autonomous District as a part of Russian Arctic. The study is based on regional and federal reports on the sanitary-epidemiological situation and e...

The fast development and densification of urban areas, combined with climate change conditions, have a consistent impact on urban water management services such as rainwater handling. The current pattern of urban development focuses on the creation and expansion of grey infrastructure, resulting in the deterioration of the natural environment and the loss of ecosystem functionality. This research aimed to identify and mix technical (hydraulic) solutions with green- infrastructure and with town-planning measures in...

In the hydrological area of Banat from Romania, 20 bodies of underground water were identified and delimited, out of which 5 are cross-border underground water bodies. The present paper characterizes the underground water bodies in the B?rzava catchment area, which has an area of 1202 km2, with an average altitude of 289 m. The B?rzava catchment area occupies the central part of the Banat catchment area, bordering the north and east with the Timi? catchment area, to the south with the Nera catchment area and to th...

The possibilities to develop health resorts and balneological or spa and thalassotherapy centres in the Baltic Sea region countries have not yet been fully analysed. The water resources in Latvia have been used historically and still in nowadays could be used for different types of treatments more effective. The core questions for a medical tourism development are products, demand and service quality. It is marked in the Baltic Sea country (Lithuania, Latvia, Estonia) development strategy that environmental manage...

Through this study and researches carried out in this paper, it was attempted to highlight the need for the re-equipment of the treatment station in a town with 6000 inhabitants due to the high exploitation costs, the lack of a constant discharge that satisfies the local water requirements and the quality of the drinking water currently distributed fully meet the applicable drinking law. This article presents also the exploitation optimization (from the energy point of view) of a drinking water treatment plant, ba...

Hydrobiological monitoring of selected pools (alluvial oxbow) was carried in the K?ran?-Hrb??kovy t?n? Nature Reserve (Czech Republic) between 2015 and 2017. The pools represent a residual aquatic ecosystems of original inundation floodplain of the Elbe River, before river stream regulation. The regular samplings were performed every four weeks and more than one-year cycle was covered. Water quality parameters (temperature, conductivity, pH, dissolved oxygen and transparency were measured in the field. The level o...

Molluscs are frequently used as a biomonitor of heavy metals (HMs) pollution of sea water and fresh water. This is because mollusks are very sensitive to sudden change of abiotic factors, they have a high rate of metals bioaccumulation, and there is a correlation between HMs concentration in molluscs and water and bottom sediment. Gastropods are important for biomonitoring of fresh surface waters. ItпїЅs well known that gastropods as biomonitor organisms have several advantages such as a reasonable size for analys...

This paper is a sequence that is part of the extensive analysis of the Danube Delta genesis. Sacalin island is a territory formed in the Black Sea, a short distance from the Romanian coast, in the south of the Saint Gheorghe branch of the Danube Delta, the main source of transport for alluviums. The history of this new territory is relatively recent. The first mention was in 1771. In 1856, Captain Thomas Spratt made a new map, in which the island of Sacalin appeared with two submerged nuclei. In 1924, Romanian res...

This paper investigates a theoretical aspect of application of partial correlation functions in hydrological system analysis. The functioning of hydrological system is simulated with the conceptual mathematical model consisting of series of linear reservoirs where the inputs are synthetic time series representing rainfall on catchment and the resulting output time series represents the discharge from spring. The partial correlation functions are calculated for the input and output time series describing specific h...

At uranium ore deposits surface waters and local streams are important for the environment. Because these are affected by uranium-bearing acid mine drainage and dissolved uranium is moderated by dilution and sorption uptake by stream sediments. Depend on the mineral alteration and in the case of the iron existence, acid drainage forms in the streams. In this case surface waters and streams become a significant mechanism for mobilization of suspended uranium particles. The aim of this study is to assess the acid mi...

The study pertains to a regional and local context of the adaptation to climate change and explores the main international and European Union decisions in this regard, as well as the goals set for Latvia. The concept of adaptation is clearly connected with the drafting of sustainable development policy and must be handled at different levels. The study analyses the examples of international and local projects used in the situation of Latvia and the documents drafted by local governments, facilitating implementatio...

In this study, cobalt oxide (Co3O4) was prepared by thermolysis of cobalt (II) oxalate at ???????????? This oxide was characterized by IR spectroscopy, XRD (X-ray diffraction) and SEM (scanning electron microscopy). The adsorption of phenol and lead (II) ions, both singly and in combination, by obtained and characterized Co3O4 was studied in batch system. Kinetic and equilibrium experiments were conducted to study the effects of solid : liquid ratio, pH, contact time and initial concentration of the pollutants. Th...

This paper deals with disinfection of drinking water at пїЅAquatim S.AпїЅ. The disinfection plant is part of an investment plan to provide conformation with the Romanian Law 485/2002 concerning drinking water quality and European Union Water Frame Directive. The new facility employs modern techniques of storage, dosage, injection and neutralization of chlorine. Under these circumstances, the risk of chlorine leakage decreased and increased the accuracy of chlorine dosage. The regulation and control of the process ...

Fish farming has a very long and rich tradition in the area of the Czech Republic. As the golden age of fish farming and building of fishponds, the second half of 15th century and whole 16th century are considered. In this period, huge number of fishponds was built in many parts of the Czech Republic. Many fishponds ceased to exist since this era but many of them remained until present. This means, besides others, that there are many fishponds within the Czech landscape which are very old. Some of them underwent r...

Promoting sustainable use of groundwater based on reducing pollution and on preventing later pollution is a basic desideratum of the Water Law No. 107/1996 with later additions and alterations and of the Directive 60/2000/EC in the field of water issued by the European Parliament. Water resources are a source of normal economic development: they ensure nature balance and life continuity and this is why we need to rationally use them during both normal and crisis periods (e.g., drought). Ground waters are an ecolog...

The scope of this study is the application of a new approach for the estimation of potential soil erosion using a physically-based erosion model Erosion 3D for modelling potential erosion in the Myjava River basin, Slovakia. Erosion 3D is a physically-based model for predicting soil erosion by water on agricultural land. The model is predominantly based on physical principles and it simulates surface runoff, erosion, deposition and the detachment of soil particles for single events, and provides good tool to simul...

Calculation of the local scour behind the hydrosystem tailrace structures is associated with determination of hydraulic flow parameters, characterized by a sudden increase in the depth. The flow parameters are calculated on the basis of T. von Karman's integral momentum equation for a submerged turbulent jet. The flow in the hydrosystem tailrace, in accordance with the approach of G. N. Abramovich, is considered as a set of a submerged turbulent jet, a vortex area, and a main flow in the tailrace passage. It allow...

Lake water quality determines the possibility of its using for technical purposes (as a source of drinking or industrial water) and for recreational using (swimming, angling, water sports). In modern times the water quality state is deteriorating because of excessive anthropopressure. The attempts of water quality improvement are taken via technical methods implementation. In order to predict the effects of potential restoration actions the great need exists of the models development, which can help to select the ...

Springs are one of the essential part of water suppling system in Rostov on Don. Nearly 60 springs are known to exist in the city. Rostov region is located in the arid climate zone, where there are limited natural resources of fresh groundwater. At the same time, region due to the regional hydrogeological relation is situated at the junction of four artesian basins in their regional parts focused significant resources of fresh pressure water. Springs and wells in Rostov on Don are pumped from the Azov-Kuban aquife...

The majority of current water quality measurements are based on the traditional in-situ point sampling and laboratory analysis of the samples. This method, besides being time and financially more consuming than the remote sensing, also very often lacks a sufficient spatial and temporal resolution to adequately analyse and describe different phenomena (i.e. eutrophication). In this study, we have assessed the possibility to use air-borne hyperspectral remote sensing for mapping concentrations of different water qua...

One hundred and fifty-six groundwater samples were collected from the Aosta Valley region, Italy and analyzed for pH, electrical conductivity (EC), total dissolved solids (TDS), total hardness (TH), major cations (Ca2+, Mg2+, Na+ and K+), major anions (HCO3-, F-, Cl-, NO3-, SO42-) to evaluate the hydrogeochemical characterization as well as water quality of the area. A geographic information system (GIS) tool was used to study the spatial variation in the groundwater parameters of the study area. The analytical re...

Cities have a significant contribution to the contamination of urban lakes by input with surface runoff, illegal wastewaters discharges, sewage discharges, which lead to increased eutrophication and reduce the ecological health status. Complex temporal monitoring is needed to understand the changes in water quality, including dissolved organic matter. This study presents the first temporal evaluation of dissolved organic matter from urban lakes, using fluorescence spectroscopy. Samples were collected from urban la...

The relevance of the study is caused by the poverty of the region of researchon sweet water resources: there is a shortage of water resources suitable for domestic and drinking needs. The giant sand massif Naryn of 30 thousand km areabetweenVolgaundUral rivers is practically not studied. Themassifisconsideredasaperspectivebecauseofpresence of fresh groundwater lenses of considerable scale, development of continuous large ridges and barchan-type massifs. Eoliansandshaverelativegoodfiltratingsurfacesandsandcapacitie...

Reliable estimates of water balance components are important for solving various tasks in water management, such as hydropower management, flood forecasting, etc. It is well known that the modeling of the water balance components is associated with several problems, e.g., uncertainty in inputs, model parameters and model structure. Considering various data sources in the parameter estimation process can be a good way to improve model consistency and also to reduce parameter uncertainty. The objective of this study...

There is known about 57 species of Legionella bacteria which contains at least 79 serogroups. Some of them are considered as a potential human pathogens. Legionella occurs in natural and artificial water environment, especially in technical water supplies. The main cause of infection is an inhalation of aerosol infected by the bacteria. The preliminary research was performed. The main purpose was verification of bacteria from Legionella group occurrence in hot water installations, in public buildings and assessmen...

In this study, the adsorption behavior of natural zeolites (clinoptilolite) with respect to Cs+ has been studied in order to consider its application to purity radioactive wastewater. The natural zeolite was activated in two steps. In the first step with a 2 M HCl solution and then with 2 M NaOH solution. The natural and the chemical treated zeolite was subjected to FTIR spectroscopy, XRD (X-ray diffraction) and SEM (scanning electron microscopy) and EDX analysis. The batch method and column studies have been empl...

The research analyses the five-year results of the beach marine litter monitoring programme in Latvia and looks into its potential and applicability as a tool for environmental policy making and promotion of the sustainable coastal management at municipal level. The monitoring programme, based on UNEP methodology, has been established in the year 2012 by the NGO Foundation for Environmental Education Latvia (FEE Latvia) and operates not only as a litter survey initiative as being only one coastal monitoring in the...

The monitoring of precipitation amounts plays an important role in the estimation of water balance as well as in the understanding of complex hydrological processes taking part in a catchment. High spatial and temporal variability of the rainfall could have a significant impact on the reliability of the performed hydrological analyses, which puts an increasing demand on sampling frequency and density of monitoring network. This is especially important in the case of small catchments, often with a small number or n...

The paper discusses the impact of post-mining workings of natural aggregates on hydrographic conditions, including the volume of groundwater resources. The predicted effects of the liquidation of open pits were characterized by two sand deposits located in the river valleys of San and Wis?oka in south-eastern Poland. There are no elements of the natural environment that require special protection against the effects of their exploitation in the deposits area and in their immediate vicinity. In addition, there are ...

The land subsidence caused by underground mining results in the transformation of water relations in the Silesian Upland, which is located in southern Poland. Detailed studies were conducted in 25 water bodies formed in subsidence basins located on the Silesian Upland. The purpose of the study was to determine the temporal and spatial variability of electrolytic conductivity of the limnic waters retained in the water bodies studied. As part of field work, 12 specific electrical conductivity measurements were condu...

The Bajerka Stream (16 km long), besides the Vistula River, is a tributary to the Gocza?kowice reservoir. It is the main reservoir of drinking water for 3.5 million residents of the Silesian agglomeration. It is an artificial reservoir, created after the construction of the dam on the Vistula River. The Bajerka stream takes its origin in the dig from the Vistula River and enters into the southern part of the Gocza?kowice reservoir. This is a semi-natural stream, which is used to supply the numerous fish ponds, and...

Generally, waters of Kosovo are enriched in dissolved solids, as the consequence of aquifer lithology and residence time of ground water. The main objective of this study was to perform assessment of heavy metals (Zn, Cu, Fe, Cd, Cr, Ni, Pb and Mn) content and water pollution of River Mirusha (Kosovo) using atomic absorption spectroscopy (AAS) method. Multivariate-statistical analysis approaches were used to determine the anthropogenic and natural contribution of heavy metals. The obtained results show that values...

The inorganic migration forms of trace elements in the lakes of Western Mongolia characterized by a high content of such trace elements as U (up to 3 mg/L), Li (up to 82), Br (up to 718), Al (up to 0.4) were calculated using HydroGeo software (Bukaty, 2002). All studied lakes have high concentration of total dissolved salinity (TDS) that ranges from 1 to 360 g/L and high pH values varies from 6.9 to 10.3. According to calculated results Br, Li, Rb, Na, K, Sr, Ca, and Mg in lake waters migrate predominantly in ioni...

In the present study, chemical speciation of heavy metals in bog water and peat deposits, collected from the territory of the Kokchetav mountain group, North Kazakhstan, is described. The purpose was to evaluate quantitatively migration, distribution, and redistribution of the elements by the example of the natural object as a basic tool for the study of geochemical cycles of elements. Studying of the chemical composition of bog and pore water has been carried out, their comparative characteristic was executed, me...

The article presents a classification of small watersheds in the Czech Republic in terms of potential hydrological response to a set of design precipitation time series. Watershed classes as well as precipitation time series were derived as a partial result of a three-year project aimed at the design of typical soil conservation measures and small water management structures. Design precipitation scenarios were derived in an analysis of both rain gauge and radar measurements taking into consideration the precipita...