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The Water Framework Directive obliges the member states of the European Union to monitor the state and ecological potential of water bodies. The assessment is based on physicochemical indicators, biological elements and hydromorphological conditions. As part of the hydromorphological conditions assessment, the following is taken into account: spatial layout of the watercourse, water depth, bottom substrate, as well as the presence, spatial and species structure of aquatic and riparian plant communities. Considerin...

Water resources are the national wealth of any country and one of the basic foundations of its economic development. The growth of cities, rapid industrial development, intensification of agriculture, a significant expansion of irrigated land and many other factors make the problems of rational water resource management more difficult. The activity of the mining and chemical enterprise mainly leads to the soil and the water pollution. After the closure of the enterprise, it is necessary to develop a remediation pr...

Due to the relatively different conditions of small and large water supply companies functioning, there are significant differences in the reaction, progress and consequences of the crisis situations. The specificity of small company requires an individual approach in the area of crisis management, for instance due to limited financial and technical resources. Admittedly, small water companies are particularly exposed to the negative consequences of a possible crisis, but from a large part they show greater flexib...

The studied area Central Spi? is located in Rud?any - Gelnica area, which is according to environmental regionalization included in the environmentally loaded and unhealthy areas in Slovakia. As a result of long and intensive mining and processing of minerals, the area is polluted with heavy metals and the landscape was altered by extensive anthropogenic forms. In the context of mining activity, surface water acts as a transport medium of pollution, thus expanding the area of the impact of old mining activities on...

The paper presents a study on water quality, which can be influenced by biological, physical and chemical parameters of water. Water quality has the purpose of identifying the direction of water use for both domestic and industrial purposes and is of particular importance to humans and living organisms. In addition to the human factors that have a major impact on water quality (both for surface and for groundwater), there are also natural factors and anthropogenic activities. The purpose of the study is to analyze...

In the last decades, transport and handling equipment sites have became progressively pronounced in areas that were recently lacking transport services. In many cases, transport services are not provided in mountain areas and in areas that have not been significantly affected by anthropogenic impacts yet. Local natural materials and asphalt mixtures are used for road construction, in which it causes road movement. Used asphalt mixtures are made up of mixtures of various organic substances, usually aromatic nature,...

The purpose of this paper is to outline the findings of the study into the quality of water used for oil-field water injection operations to support the reservoir pressure. Comparative assessment of injection water quality at cluster pump stations has been carried out by means of a particle size distribution analyzer. The device was used to measure the particle size distribution in wastewater. Water samples from cluster pump stations located in the area producing oil from the Romashkinskoye oil field, Devonian for...

The old Ervedosa mine (Northern Portugal) was intermittently exploited for tin by underground and open pit mining till 1969. The tailings were deposited on the ground. The mine was abandoned without any environmental remediation. Mineralization occur in quartz veins, and consists of cassiterite as the main ore mineral, and several sulphides (arsenopyrite, pyrite, sphalerite, pyrrhotite, chalcopyrite and stannite), matildite, bismuthinite, native bismuth and other minerals. The present study aims to characterize th...

Assessment of changes in hydrogeological conditions of groundwater deposits under climatic effect and human impact requires in-depth study. It especially concerns groundwater deposits of drinking quality. Providing drinking water to the population of large cities and most of the medium-size and small populated areas of Kazakhstan is based on these changes. The UN carries out special control and analysis of the state of drinking water supply to people around the world, which, unfortunately, testifies to the catastr...

The Don River Delta represent a single hydrographic system, the development of which is characterized by the spatial-temporal variability. The functional role of the individual delta channels and their participation in the distribution of the river flow are different due to significantly different morphological characteristics and stages of development. In turn, this is reflected in the peculiarities of hydrological and hydrochemical processes. In this regard, within the delta the intensity of migration of chemica...

Hydrogen sulfide is a gas that is formed in various water bodies due to the flow of sulphate reduction and putrefaction of organic matter of bottom sediments. Hydrogen sulfide can also get in the water of reservoirs and watercourses with wastewater of various industries and farms. In the water objects of fishery and drinking water use concentration normalized, since due to the toxicity of hydrogen sulfide deteriorates the water quality, occur hypoxic effects and death of aquatic organisms, while for ponds with mud...

Appropriate protection of the environment, as well as of the most vulnerable environmental factor, water, is impossible without the achievement of a civilization's progress in all its aspects (economic, social, etc.). Also, the lack of adequate economic support may lead to the impossibility of carrying out actions to protect and conserve water resources. Activities from eastern part of the Jiu Valley, constituted as integrated parts of economic growth and development, invariably degrade, through the specificity of...