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The widespread use of fertilizers and pesticides impairs the state of the environment. Identifying the nature of the influence of fertilizers and pesticides on natural waters and identifying the extent of this influence is relevant today. The article discusses the influence of mineral and organic fertilizers on the qualitative characteristics of groundwater (waters of the first aquifer from the surface) in the Predvolzhsky region of the Republic of Tatarstan. Hydrogeochemical and agrochemical data help assess this...

Nowadays, after periods of time without precipitation, more and more frequent rains are coming in with very high flows in very short time. In case of extreme precipitation phenomena, sewer networks can no longer take rainwater flows, which often occur with large damages, often with loss of life. Drinking water is not renewable. That is why it is important to protect drinking water sources by using rainwater more efficiently. By recovering, storing and using rainwater, costs are reduced by treating and transporting...

The flood time of Siberian Rivers coincides with the spring and summer period and is characterised by intensive water feeding because of intensive snow melting. At all that, the most annual water discharge is formed, the latter, by turn, causes erosion processes. In addition, in years with excessive amount of flood water, the inhabitants suffer economic losses very much: E.g., economic activity areas are flooded, engineering structures are washed away and damaged. A number of factors form high water level such as ...

The authors present the results of the research on the variability of selected physicochemical properties and discharge of medicinal waters in Ladek-Zdroj. The medicinal waters are exploited by five natural springs and one deep L-2 well. Based on previous studies, it was found that there are strong hydraulic bonds between particular intakes of thermal waters. The nature of these correlations indicates that medicinal thermal waters are recharged from one fissure deposit of deep circulation system. The main factors ...

World is changing rapidly. We are facing new reality and challenges. New global and complex solutions are needed to adapt to future reality. Tasks about landscape are coming to the forward more and more. It is necessary to speak about role of landscape in our life. Many points of view need to take into account when we want to speak about landscape and changes which are waiting for us in next decades. Question for researchers is how to obtain the best data for the best suggestions and recommendations for policy mak...

The study of aquatic systems is an extremely important issue in the context of saving. natural resources. In this respect, the description of the evolution over time and the dynamics of some status parameters describing the dynamic aquarium system is a rather difficult problem. This paper presents a method of representing evolution over time and some status parameters that allow assessment of the status of an aquatic system. The method outlined in the paper is based on the use of automated automatic neural network...

Lake Taymyr is largest lake in Eurasian Arctic. Late Quaternary environmental history of the area has been studied extensively during the last decades. However, Late Pleistocene and Holocene history of Lake Taymyr itself remain uncertain. More information concerning lake-level changes and climate conditions can be obtained by studying lake terraces. During summer 2016, several outcrops of Lake Taymyr terraces (10-m high and 25-m high terraces) deposits have been investigated. Here we present the results of litholo...

The Arkhangelsk region is one of the leading forest industry centers of Russia. The region possesses significant chemical and mechanical wood processing facilities, producing about one third of the pulp and cardboard, also up to 10% of sawn timber, paper and fuel pellets of the total volumes in Russia. One of the forest industry?s problems is a historic underdevelopment of an infrastructure, in particular ? lack of transport links. Due to low population rate, the density of the land transportation system is minor,...

Investigation of methods for increasing the rate of oxidation of ferrous ions dissolved in natural water and developing techniques for obtaining high-dimensional agglomerates of oxidized iron particles, with the aim of improving the efficiency of separation processes. As a method of oxidation in processes of deironing of natural waters, aeration and oxygenation of air through ceramic membranes were chosen. The effectiveness of the aeration method of deironing is associated with the rate of oxidation of Fe II with ...

Many simplifications are often made, in calculating of eigenmodes and eigenvalues of stuctures. The mass of a structure is distributed throughout the structure. However, in most cases, mass can be considered concentrated in the nodes of the structure. The procedure consists in concentrating the mass of the elements at each end thereof, followed by the summation of the mass of the elements that compete in the corresponding nodes. Generally, rotating mass components have a minor influence on the dynamic response of ...

Green roofs represent one of the most diffused and representative Low Impact Development techniques (LID). Green roofs consist of a number of layers, including a vegetation layer, a lightweight soil medium, a drainage layer and an impermeable membrane. Recent studies have confirmed the benefits of green roofs. Green roofs are able to retain water, reduce peak flow, improve biodiversity and mitigate heat island. Although the benefits are evident, the transition from traditional urban drainage systems to the sustain...

Permeable pavements are among the most diffused Low Impact Development techniques (LID). Several studies have confirmed the optimal performance of permeable pavements in terms of peak reduction and water retention. Furthermore, permeable pavements have proven to reduce pollutant load in runoff water. Although the benefits are evident, the transition from traditional urban drainage systems to the sustainable ones is very slow. The lack of accurate modelling tools represents a key limiting factor in the diffusion of...

The object of study was Wolszty?skie Lake, (area 124.2 ha, max depth 4.2 m). That water body is flow-through lake type and it is alimented by Dojca River and total catchment area is 193,5 km2. The lake was restored using phosphorus inactivation method ? in the 2005-2006 years an aluminum coagulant PAX 18 was used for treatment and in 2013-2014 years ? iron coagulant PIX 111. The results of research revealed, that the amounts of phosphorus fractions in the bottom sediment have changed. In the 20 cm thick sediment c...

Tsunami in the Black Sea is a relatively rare phenomenon. Because of its rare occurrence and small volume of full-scale data, tsunami hazard of the Black Sea region has not been sufficiently studied. However, the chance of tsunami waves is still on. In the XX century, four known tsunami phenomena were recorded by marigraphs. These include two events that occurred in 1927, events of 1939 and 1966. Vertical sea level fluctuations were recorded in several points on the Black Sea coast. However, true sea level heights...

Trichloroethene (TCE) and tetrachloroethene (PCE) have been detected in water of the Triassic carbonate aquifer in Tarnowskie G?ry area since 1994. Since 2005, TCE and PCE in groundwater have been constantly monitored by the Voivodship Inspectorate for Environmental Protection in Katowice in 12 observation wells and pumping wells located in Tarnowskie G?ry and outskirts of the city. After 24 years chlorinated solvents still pose a serious environmental risk and are responsible for closure of selected wells situate...

Agricultural production is based on responding issues related to climate change in the coming years. Frequent drought seasons lead to a decline in yield production, and negative hydrological balance is expected in the future, which will also affect water consumption for agriculture [1]. Based on sap flow measurements, it is possible to optimize irrigation. For our experiment was used the grape vines in Nitra region, on which we installed Dynagage Sap Flow Sensors with the Flow 32-1K Sap flow system, which measure ...

Due to the last years effects of climate changings upon surface water flow, but also due to alterations in running the complex water arrangements schemes in order to satisfy various updated needs, it happens that more and more low-level water reservoirs, especially in the hilly and plainly areas, would call for a study regarding their conversion from non-permanent to permanent storages. It is also true that there might be some cases of storages accomplished as permanent which recently tend to work seasonal, but in...

The conceptual basis for the creation of a forecast-analytical system that allows to predict the pollution and to control the purification of oil-containing sediments of small rivers are considered in this article. Oil content of bottom sediments creates the risk of secondary water pollution not only by substances entering the sludge. More dangerous products of degradation are formed in the result of the activity of the indigenous microorganisms, that inhabit the bottom of aquatic environment. Forecasting the dyna...

Measuring soil moisture it is usually not performed on a daily time step due to financial costs, time-consuming measurements and variability of the weather. However, since this information is an important part of many hydrological and water management studies, the author tries to solve this situation by proposing a suitable interpolation method. The goal is to predict daily moisture values so that their conformity with the test data is as high as possible. The calculation is based on the use of soil moisture data ...

The development of a model for estimating and predicting the dynamics of plankton in a lake-type reservoir, depending on the meteorological and hydrophysical parameters, is carried out in the Nizhny Novgorod State University of Architecture and Civil Engineering in 2014-2018. Model for quantitative description of biomass production depending on solar radiation and temperature was developed. The influence of water stratification on algae blooming was investigated on the basis of systematic procedures for the quanti...

This study investigates content of radioactive gas radon ? Rn-222 in a number of sources of surface waters of different type (spring, artesian, well, river etc.), located in the territory of Kartli artesian basin, Georgia. Water samples were selected from 23 sources. Researches were carried out in the period January-December; samples from several locations were selected monthly. Electronic radon detector RAD7 was used for radon content determination. It was established, that radon content ranged depending on the s...

Radon is dissolved in ground water and can be transported from the source with water into the buildings. Subsequently indoors, when water is exposed to air, radon is released. Showers and sprays are a prime release method and the greater the water usage, the greater potential radon problem may occur. Outdoors, radon is quickly diluted to very low, not problematic concentrations but indoors, it can concentrate significantly. Although radon in indoor air is indicated as the second leading cause of lung cancer, not e...

Changes of environmental situation such as pollution of the atmosphere, surface water and ground water quality deterioration require measures to reduce the harmful effects of human activities on the environment. As such, the problem is the inability of some treatment facilities to provide a quality of treatment that meets the requirements of modern environmental standards. This leads to a decrease in water quality and eutrophication of water bodies. The goal of this article is choice of biochemical treatment metho...

The effects of global warming are becoming more and more felt by changing climatic conditions across the entire surface of the earth. Thus, in some regions of the Earth's surface, catastrophic floods have begun to occur more and more often due to the increase in both the occurrence frequency and the intensity of torrential rains. In order to reduce the flood damage, it is necessary to prepare hazard maps and flood risk maps. These maps are prepared using hydraulic simulation of the flood propagation on the waterco...

Fractal geometry in recent years became a useful tool used in many scientific fields. One of the directions of development of that tool was also an attempt as using it for describing the morphology and granulometry of solid phase contained in various suspensions. While monofractals are used primarily to describe the space occupied, multifractals can be used to describe entire sets of data. (The set of data could be: various data series, distributions of physical quantities (such as, for example, particle size dist...

In connection with the production and distribution of drinking water it is necessary to take into consideration the possibility of an emergency, which in this concept means undesirable effects of forces and phenomena endangering human health, property, goods, and, last but not least, also the environment. These are natural hazards and anthropogenic hazards or their combination. It is therefore necessary to eliminate at least partially these hazards and minimize their adverse effects. To eliminate hazards, a risk a...

Physical-chemical and microbiological parameters of waters of rivers are determined seasonally in the waters of small and big rivers of Adjara Black Sea coastline (Georgia). The object of research was the following rivers flowing to The Black Sea: Chorokhi and Acharistskali (length-438 and 95 km), from small rivers?Kubastskali, Bartskhana, Korolistskali, Chakvistskali and Kintrishi (length<75 km). The strong smell was found on the Kubastskali river (5 points) and the Bartskhana (4 points) river. Their color was ye...

This study evaluates the seasonal habitats preference of selected macrozoobenthos (Ephemeroptera, Trichoptera and Plecoptera) in the Ostravice River. The Ostravice River is located in the Moravian-Silesian Region, the Czech Republic. For macrozooentos sampling in 2016 and 2018, a standard 3-minute semiquantitative multihabitat sampling method including a manual benthos net sampler was used. Macrozoobentos was collected from the surface of upper side of the stones, underside of the stones, side of the stones of 20-...

The stable isotopes oxygen-18 (18O) and deuterium (2H) are naturally abundant in precipitation. Due to fractionation effects, a seasonally variable distribution of water isotopes occurs in the precipitation of temperate and continental regions. Water isotopes, being conservative tracers, are ideal for investigating subsurface flow processes. They reveal information about soil water fluxes like evaporation, transpiration, downward infiltration and others that are difficult to determine by other techniques. We are u...

Brief The JOINTISZA Project (Strengthening cooperation between river basin management planning and flood risk prevention to enhance the stats of waters of the Tisza River Basin) creates transnational cooperation for next two years in the largest sub-basin of the Danube Basin. The project is funded through the Interreg VB Program of the European Union, the Danube Transnational Program (DTP 2014-2020) component, Priority Axis 2 (Responsibility for Environment and Culture in the Danube Region), Component 2.1 (Strengt...

The low head hydropower development ?Capra VI and VII? consists of two small hydropower (SHP) stations accomplished in sequence on the homonym stream in Arge? County, center Romania, each of them less than 1MW. The SHPs, study case for this paper, follow the European directives regarding the water, the environment and the green energy. Their accomplishment was based on the existing delimitation of the minor river bed for which it was noticed that the ichthyofaunal environmental conditions are not entirely achieved...

The low head hydropower development ?Capra VI and VII? consists of two small hydropower (SHP) stations accomplished in sequence on the homonym stream in Arge? County, center Romania, each of them less than 1MW. The SHPs, study case for this paper, follow the European directives regarding the water, the environment and the green energy. Their accomplishment was based on the existing delimitation of the minor river bed for which it was noticed that the ichthyofaunal environmental conditions are not entirely achieved...

The paper presents a study on the ecological recovery of a waste from the urban waste water treatment plant, respectively the sewage sludge. The use of sewage sludge, is made through its use in agriculture and forestry, through incineration with energy recovery, or co-incineration. According to EU legislation, sludge cannot be used in farming in raw form, so it must be treated before it is properly used. The paper presents an analysis of sludge samples from the decanters of the urban waste water treatment plant fr...

Considering the increasing generalized pollution and tightening of environmental protection regulations, it is necessary to constantly optimize the treatment technologies, in order to meet the quality standards when discharging wastewater into surface water. The paper presents a study on a wastewater treatment plant in Romania that serves a municipality with a population of approximately 400,000 inhabitants, having a sewerage network working in a unitary system. The main indicators of the waste water quality (flow...

Considering the widespread pollution and the need for taking drastic measures to protect the environment, it is necessary to constantly optimize the treatment stages within the wastewater treatment plants in order to meet the quality standards when discharging wastewater into surface water. The paper presents a study on a wastewater treatment plant in Romania that serves a municipality with a population of approximately 400,000 inhabitants, having a sewerage network working in a unitary system. The study followed ...

The main aim of this paper is to investigate possibility of use evapotranspiration (ET) data derived from the Surface Energy Balance Algorithm for Land (SEBAL) based on Earth Observation (EO) and local meteorological station (Eddy Covariance -EC - flux tower) data to improve simulation of Soil and Water Assessment Tool (SWAT) for catchment with significant area of wetland, case study of the Upper-Biebrza catchment (North-East Poland). The Upper-Biebrza SWAT model was set for 1951-2016 in which potential evapotrans...

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...

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...

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 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...

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...