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Environmental assessment is also the basis for the definition and management of ecological risk of anthropogenic load on the environment. The possible impact on the Bugsky estuary are presented and substantiated and solutions are proposed to reduce the anthropogenic impact on the waters of the estuary. The main element of risk analysis is to identify hazards that can lead to negative consequences. Purpose is a comparative analysis of the environmental status of surface waters on the basis of integrated indicators....

This paper deals with the first results coming from the research activity of the SECOSUD Phase II, called пїЅConservation and equitable use of biological diversity in the SADC region (Southern African Development Community) a project supported by the Italian Ministry of Foreign Affairs in the SADC [1]. The goal of this tiered study is to give an integrated view of three focus themes inside the area of Limpopo National Park, in Limpopo River Basin: groundwater, climate change, biodiversity. Limpopo National Park is...

Spatio-temporal distribution of pollutants in surface water bodies of the Baikal natural territory is shown on the example of the main inflow of the lake Baikal пїЅ the Selenga river. This is due to the fact that the transboundary Selenga river basin plays a very important role in socio-economic development, as well as in the formation and functioning of natural systems in a large part of Mongolia and the subject of the Russian Federation - the Republic of Buryatia. To assess the spatial-temporal distribution of p...

The KERMIT project deals with research and capacity-building targeted at two, related groups with academic backgrounds: 1) refugees in Europe and 2) local populations in the stressed regions from which people are fleeing. Although the long-term focus is aimed at raising the competence and capacity for sustainable resource management in stressed regions, the refugees with academic backgrounds involve both new challenges and opportunities with related objectives. These refugees need complementary study to adapt thei...

Flood risk, associated with rapid climate changes, improper development of river basins (e.g. intensive house building, deforestation) and low retention capacity of water bodies, has been observed in recent years in EU countries, including Poland. Floods pose a threat to human life and health and cause great property loss and irreversible changes to the natural environment. Studies concerning flood risk management have shown that seeking measures aimed at limiting the tragic consequences of floods are more effecti...

The drinking water demand of most Estonian communities is covered by groundwater abstracted from the sedimentary rocks. Due to the climate and small population, EstoniaпїЅs fresh water resources are sufficient. However, Estonia faces a number of problems with natural groundwater quality in some areas. Fluoride concentrations up to 7 mg/l are recorded in western Estonia and deeper portion of the Silurian-Ordovician aquifer system, which consists of diverse limestone and dolomite. Fluorine contents in carbonate rock...

Land management and spatial planning are closely linked to the adaptation of water management to climate change impacts. Land management has an influence on the ability of the soil to retain precipitation or flood water and sustainable land use can help to better manage risks related to both increased precipitation/flooding and water scarcity. Land and soil management can also realize significant synergies between climate change adaptation and mitigation. Agriculture as a key form of land use will play a crucial r...

This paper presents the works on applying the recommendations of European Commission to Member States by the Mapping and Assessment of Ecosystem Services (MAES) framework to the Romanian peculiarities of wetlands ecosystems, at local level. The MAES framework, published in several guides by MAES working group, recommends for the Member States the methodology for the fulfillment of the Action 5 from the European Union's Biodiversity Strategy 2020 which is to assess in the first phase the ecosystems condition and th...

Kacza river is located in northern Poland in the neighborhood of the Gulf of Gdansk and the Baltic Sea. A Kacza having length of 15 km and catchment area of 53 km2 collects the water into the Gulf mostly from inhabited and forested areas within the administrative boundaries of the city of Gdynia. On the 14th and 15th of July 2016 in northern Poland on the large area of Tri-City agglomeration (Gdynia, Gdansk and Sopot) total daily sum of precipitation over 150 mm was recorded. Rapid rainfall in the area of Tri-City...

Since 1860, phenol has been in production, with its basic use as an antiseptic. During late 19th century and thereafter the use of phenol has been further extended to the synthesis of dyes, aspirin, plastics, pharmaceuticals, petrochemical and pesticide chemical industries. In fact, by 2001, the global phenol production has reached an impressive 7.8 million tons. Among the different organic pollutants in wastewater, phenols are considered as priority pollutants since they are harmful to plants, animals and human, ...

In this study preparation of oil absorbent composite is described. Polyacrylic acid / Na-montmorillonite composite was synthesized by polymerization of acrylic acid on the surface of the sodium bentonite. FTIR spectrum of absorbent was recorded, and it was shown that polyacrylic acid reacted with bentonite layers. In this work the swelling kinetics of obtained composite was investigated and the main kinetic parameters - the swelling rate and the swelling kinetic constants were determined. In addition to demonstrat...

Online monitoring of plankton in lake-type reservoirs requires the development of a model which is based on previous information, can assess the current state and predict the concentration of plankton in the future. An improved view of previous periods is possible on the basis of reanalysis techniques. These data can be used as a basis for modeling the profile of wind characteristics and the temperature profile which varies with its influence. A one-dimensional model for lake type reservoir is used in the program ...

Parameters of local scours in an unprotected part of the riverbed behind the hydrosystem end structures are determined by distribution of kinematic characteristics of the flow. The kinematic characteristics in cross-sections of a natural part of the riverbed depend on a number of factors, including the bottom roughness, flow depth and water surface slope. To solve the problem of calculating the velocity distribution over the cross-section of the drainage channel, we used Navier - Stokes equations for the uniform s...

In old times, hydrotechnical constructions, mostly dams were built for the single purpose of water supply or irrigation. As civilizations developed, there was a greater need for water supply, irrigation, flood control, navigation, water quality, sediment control and energy. Demand for water is steadily increasing throughout the world. There is no life on earth without water, our most important resource apart from air and land. During the past three centuries, the amount of water withdrawn from freshwater resources...

In this paper we have developed a set of multi-parametric data analysis programs, which can be used in hydrogeological studies. Considering that in these studies we use large sets of multi-parametric data with spatial and temporal distribution we focused on the analysis with polynomial tendencies surfaces and hypersurfaces, analysis by moving average with different dimensions of windows and analysis of the variance of the correlation factor with mobile window. The first part of the paper is dedicated to the descri...

This paper presents the research on the sedimentation process assisted with coagulation process. The main purpose of this project is to determine the method of coagulant dose selection during the sedimentation of the coal suspension. Measurements have been made for various sedimentation intensification techniques: the use of coagulant, the use of lamella, and the use of both techniques simultaneously. The efficiency of the sedimentation process was compared using various intensification techniques. The studies wer...

Nazca lines in Peru are well known for their geometric precision and ancient images. It is assumed that these lines were created by ancient Nazca civilization almost 2,000 years ago, mainly motivated by religious considerations. Satellite images and publicly available images from airplanes and air balloons were studies, as well as on-site observations performed. The orientation, interconnectedness and quality of geoglyphs were evaluated. The results suggest that only a small portion of geoglyphs may indeed be very...

Adsorption of p-nitrophenol from aqueous solution by combined membrane-adsorption technology was studied. Activated carbon samples were synthesized on the base of industrial by products (coal tar pitch) and biomass. Synthetic activated carbon synthesized from mixture of coal tar pitch and furfural by thermo-oxidation treatment with sulfuric acid at 200oC, and subsequent carbonization in nitrogen atmosphere at 600 oC, followed by hydro-carbonyzation at 800oC. Biomass based activated carbon was obtained by hydro-car...

The Danube Delta dynamics formation and expansion represent the motivation of the study included in this paper. The results of soil studies made possible to develop the Danube Delta genesis maps [7]. That informationпїЅs are the input data and the validation data for the numerical flow studies of the Danube River. The study of the formation of new territories has been developed by the Computational Fluid Dynamics (C.F.D.) method. There were modelled in three dimensions the maps for Danube River Basin flowing into ...

The study focuses on saving energy in the process of drinking water distribution in the rural area. The hydraulic model of the water distribution network that supplies Dulcesti village, Constanta County, Romania, developed in EPANET is the basis to performing a thorough analyse of the hydraulic systemпїЅs operation. The standard hourly water demand is taken into account. The network is a branched one, widen on a large area so that the ratio is about 10m of pipe per inhabitant. The difference in junction elevation ...

In this paper is developed a model for the wastewater treatment plant (WWTP) in Arad, Romania and are presents the results of the steady-state simulation. The model of the plant was based on the stateпїЅof-the-art Activated Sludge Model No.1 (ASM1). In this paper are describes all the steps required to model a waste water treatment plant. In addition, discuss the major challenges encountered in creating a model. It includes typical model simulations for assessment analysis facility. Modeling of wastewater treatmen...

In the article are given the results of the study of chemical and organic composition of natural waters (bog, river and underground). The samples were collected on territory of the largest bog system in the world пїЅ The Vasyugan bog at the mouth of the rivers Vasyugan and ParabelпїЅ (Tomsk region). It is shown, that for all types of waters are characteristic of increased concentrations of iron (from 1 to 12.5 mg/l) and organic matters (COD from 4 to 30 mg/l), at the same time contents them are directly proportion...

This paper deals with the results coming from the research activity of the SECOSUD Phase II, called пїЅConservation and equitable use of biological diversity in the SADC region (Southern African Development Community) a project supported by the Italian Ministry of Foreign Affairs in the SADC [1]. In the framework of this project they have been investigated groundwater resources and shallow ones present in the buffer zone of National Limpopo Park, in the aim of better support water demand in the villages, rising in...

The evaluated intent of investment represents the increase of existing level of technological equipment in interested WWTP (wastewater treatment plant) so that it will handle also wastewater with high content of NEL (non-polar substances), especially of oil emulsions. The investment will be situated in the present manipulation space, which is in the interested WWTP available for possible development purposes and process intensification. Investment intent will allow better cleaning of wastewater with such a high co...

Mallorca is the largest of Balearic Islands in the Western Mediterranean Sea and is a rapidly growing international tourism destination. The sustainability of this island is highly dependent on critical resources пїЅ availability of potable water, the amount of which is limited due to natural conditions. The pre-historic Stone and Bronze Age cultures in the Eastern part of Mallorca were studied, mainly in the surroundings of Artas and Porto Crist. It was established that the number of the monumentsпїЅ remains is m...

Our objectives were to investigate the bacteriological, biological and chemical status for sediment quality in a zone from Danube catchment according to Water Framework Directive. The area chosen for investigation is a large section of the Danube River on the section Bazias-Calarasi and its main tributaries located in the southern part of Romania (Jiu, Olt and Arges rivers) and the aquatic systems type пїЅdeltaпїЅ in the south-east of the Danube. All investigations performed where made in accordance with Directive...

At the Incukalns district of Latvia, two gravels pits from 1956 until 1981 were filled up by liquid sulphuric goudron (mixture of sulphure acids, oil products and other hazardous substances). These dump sites were informatively named as the Northern and Southern pools. During sixty years, the pools are polluting groundwater that moves towards the Gauja river. Waste from the pools will be excavated in the near future. However, the contaminant plumes will continue their movement. Scientists of Riga Technical Univers...

The sedimentological sequences along the lower sections of rivers have been created by the alluviation of meandering rivers in historical times. For the rehabilitation measures (focusing on water replenishment to oxbows) with the purpose of enhancing ecosystem services, the detailed hydrogeological study of alluvial deposits and soils is indispensible. Our investigation covers the area lying between the CпїЅn-Szaporca oxbow lake system, under rehabilitation, and the Drava River, which controls groundwater flow. Th...

The trace element composition of endorheic saline lakes (with total dissolved solids varies from 1 to 590 g/L) of the Altai Region (Russia) is of undoubted interest from the point of view of their mineral resources. Among the trace elements in lake waters, high content of boron (up to 78 mg/L), bromine (up to 820 mg/L), lithium (up to 3.6 mg/L), strontium (up to 13 mg/L), iodine (up to 6.3 mg/L), and arsenic (up to 0.6 mg/L) have been determined. The content of uranium in the investigated lakes varies over a wide ...

In over 38 percent of the groundwater drinking water sources in Slovakia, iron and manganese concentrations exceed the recommended levels set by Regulation of the Government of the Slovak Republic No. 354/2006 on Drinking Water. Iron and manganese are not considered health hazards, although micro-environments may be supported in wells and distribution systems which harbor microorganisms. The main concern with these metals is the color imparted by the oxidized forms that rarely goes unnoticed by the consumer. In ad...

As numerous studies show, changes in the environment at the end of the 20th century have become global ones. This means that the buffer capacity of the Earth, and the planetary boundaries have been subjected to a massive impact of the different human activities for several decades. Achievement of the Sustainable Development Goals, adopted by the UN, is becoming more difficult to fulfill. Chemical pollution directly or indirectly affects the quality of natural resources, including water. Providing the population wi...

For years it has been evident the presence of regions with significant surface water and groundwater deficits due to negative climate change impacts such phenomena as global warming, which contributes to enhancing water demands in the country. In order to rationalize water resources management one should minimize the water variability in time (during periods of drought and floods). It should be emphasized, that in recent years increasing frequency of floods, their wide coverage and economic impact justifies taking...

River bed processes include the flow and entrainment, transport and deposition of sediment particles on the river bed. The morphology of alluvial river channels is determinate by complex interaction between of constituent physical processes: flow, sediment transport and river bed deformation. Under natural conditions, rivers tend to achieve a relatively stable combination between different variables that characterize them: liquid flow, solid flow, hydraulic slope of river, sedimentological characteristics of the r...

The Romanian Ministry of Tourism as the National Tourism Administration, member of the Romanian Government, is in charge of coordination and implementation of the general tourism development strategy. Among other specific domains, thalassotherapy is a new desired touristic sector designed by Ministry of Tourism and local authorities, (Tourism Promotion Office and Licensing and Classification Office) as well as the private sector (NGOпїЅs related to the tourism industry). This has a major role in the balneary touri...

The activity of drainage during various seasons and the impact of meteorological conditions on drainage runoff in different seasons (winter, spring, summer and autumn) during the period of 1969-2009 are reviewed. Particularly important indicator of drainage activity пїЅ dynamics of water runoff. The present article analyzes the change of climatic conditions in the object, Central Lithuania, following the data of Kaunas Meteorological Station; and it is determined that during the period of 1969-2009 the lowest quan...

In recent years Gda?sk had sustained economic and social losses due to severe flash floods coming down from moraine hills. The first flood occurred in July 2001 and the second in July 2016. Both events were caused by intense and long rainfall characterized by different from each other rain intensity in time. Among other GdanskпїЅs streams the Oliwski Stream has the most extended flood protection system consist of 15 small retention reservoirs. Due to its extensive flood protection system and lack of severe flood e...

Study case is situated in Caras Severin County. Every sediment transport model application is different both in terms of time and space scale, study objectives, required accuracy, allocated resources, background of the study team etc. For sediment transport modelling, it is necessary to know the characteristics of the sediment in the river bed. Therefore it is recommended to collect a number of bed sediment grap samples. These samples should be analyzed in terms of grain size distribution.To solve theoretical prob...

Maozhou watershed is a highly urbanized watersheds in southern China that is a typical watershed in ChinaпїЅs rapid urbanization. Changed land use/cover(LUC) within the watershed changed the flood response, that requires the model parameter updating with the LUC changes induced by urbanization to have an accurate flood forecasting. Flooding in Maozhou watershed is serious, which was aggravated by increased urban land area within the watershed. Accurately forecasting the flood of Maozhou watershed is imperative, bu...

The temperature of some surface and ground waters in Romania was measured during the 2015-2017 time interval at high temporal resolution in order to identify the main thermal properties and their oscillation. The water monitoring in B?ile Felix area was undertaken at Fp3 water well and Ochiul Mare Lake. The measuring sites in Geoagiu-B?i area are represented by water pumped from F3 water well and a thermal spring in Cibului Gorge. The outflowing groundwater from 2 water wells was measured in HпїЅr?ova area. In ord...

Genesis, transport and accumulation of settled sediments of mountain rivers are such random processes in time and space, which are defined by the river flow rate (Q m3/s?c), height of the basin (IпїЅ), the inclination of the river and basin geology. Genesis and the volume of river sediment is the function of the climate and, in accordance with its cycles, it increases during the warming period and decreases as the temperature falls. The main natural factors for sediment formation are the glacier, erosion, landslid...

Numerous past studies proved the potential of fluorescence spectroscopy to characterize aquatic organic matter and its link to function and chemical water quality. It was proposed as an optimum monitoring method due to its advantages, such as: rapid measurements, high sensitivity and selectivity, requires small quantities of sample with little or no sample preparation. Although fluorescence spectroscopy was used on different types of water systems, no complex study was undertaken to compare the fluorescence signal...

A mercury-cell chlor-alkali plant operated 50 years in KaпїЅtela Bay (situated in the middle of eastern Adriatic coast) near the town of Split. Even after 28 years the abundant cell house is still a hazardous source of the total gaseous mercury. Measured concentrations in the air (2.1 пїЅ 9.6 ?g m-3) could possibly present Hg-pollution of 9 km distant source of Jadro River. This source is used as a drinking water supply for the town of Split. The aim of the work was to find how far mercury is transported. Total me...

The paper aims to present the possibility of using surface water resource for irrigation in local arrangements in the West Plain of Romania. Irrigation is among the biggest consumers of freshwater worldwide and water demands for irrigation in Bega River basin are continuously increasing. On Bega River course, along with flood defense works, in the 1960 were also arranged water catchments with the role of using water in agriculture, even though most of arable land were arranged for drainage. To ensure the needed fl...

The paper is dedicated to the development of system of water objects pollution monitoring. An efficient study of the environment situation and giving appropriate solutions related to its improvement require adequate information, obtained from a large number of various parameters measurements. Conducting of analysis more than 3-4 times per day is more economically efficient if automatic systems for environment monitoring are used. Such system of water pollution monitoring proposed by authors consists of: computing ...

This study has focused on macrophytes in eight South Urals lakes such as Bolshoye Miassovo, Maloye Miassovo, Bolshoy Ishkul, Bolshoy Tatkul, Argayash, Savelkul, Baraus and Ilmenskoye. Bolshoye Miassovo, Bolshoy Ishkul, Bolshoy Tatkul, Argayash, Savelkul, Baraus are on the territory of the Ilmen State Reserve and may be considered conventionally undisturbed. Maloye Miassovo and Ilmenskoye being outside the Reserve are under the human impact of an additional eutrophic factor as there are villages and resorts in the ...

The paper discusses a comprehensive assessment of the ecological state of the basin of the transboundary Selenga River. This assessment was created on the basis of an analysis of the factors of direct and indirect effects on water bodies. The indicators used were grouped according to the types of anthropogenic influences - demographic, industrial and agricultural. The aggregate anthropogenic load was defined as the arithmetic average value of the points of demographic, industrial and agricultural loads. The result...

Lake Usma is unique with hundred years' old nature reserve and Natura 2000 territories in one part of the lake and developing the tourism industry in other part of the lake. During last ninety years, the water level of Lake Usma increased for approximately one meter, which caused coast erosion, changed soil ground water level in large territories around it and it is regarded to be a major factor for lake ecosystem functioning. To find sustainable management solution of Lake Usma, there is a necessity to understand...

The Danube, the second largest river in Europe, after its flow through many cities and countries, meets the Black Sea creating a meeting point which benefited the creation of the Danube Delta known as one of the greatest wetlands of the planet. The stretches of water and land of this delta offer good living conditions for many species of plants and animals. GIS technology is an important tool in the analysis of geographic areas. The purpose of this study was to create maps using a set of GIS technologies that pres...

An investigation of the effects of long-term drainage and restoration on the water table level and water chemistry was carried out within the area drained in 1975пїЅ1980 of Vasyugan Mire (Ob-Irtysh interstream area) with a pineпїЅshrubпїЅsphagnum community. The method of statistical analysis included estimation of time series and spectral analysis. In conditions of unsatisfactory operation of the drainage network, a comparative analysis of the data showed that average seasonal levels were close to natural conditio...

This study focuses on the analysis of the impact of land use changes on the flood regime in the Myjava River basin located in the Western Slovakia. The Myjava River basin has an area of 641.32 km2 and is typical for the formation of fast runoff processes, intensive soil erosion and muddy floods. The main factors responsible for the problems with flooding and soil erosion are location, geology, pedology, agricultural land use and cropping practices. A GIS-based spatially distributed WetSpa rainfall-runoff model was...