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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 ...

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...

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 ...

The activities of mining and chemical enterprises in Ukraine have reserved a number of environmental issues that affects all elements of the environment and requires immediate solution. Nowadays, in Ukraine, there are still relevant soil subsidence in areas of mining and chemical enterprises, the accumulation of large-tonnage industrial wastes, accumulation and migration of heavy metals in soils. Equally, important is the issue of water pollution in the area of mining and chemical enterprises. The purpose of this ...

Groundwater is one of our most important natural resources. Groundwater is the source of about 33 % of the water that county and city water departments supply to public supply. Statistics show that groundwater is use for more than 90 % of the rural population who do not get their water delivered to them from a county/city water department or private water company. In this sense, groundwater quality plays an invaluable in rural zone plays. This paper aims to identify qualitative status of groundwater in rural zones...

This study presents the evolution of residual chlorine concentration in the water distribution network for a town with 10 000 inhabitants. The distribution system consists of a tank, pump station, 41 loops, 175 junctions and 166 pipes. The paper presents also a methodology for computing the residual chlorine concentration decay in water distribution system, over a 7 days period of time. Chlorine is injected at the tank, with a constant concentration of 0.5 mg/l. A variable water demand over a 168 hours period is i...

Water Framework Directive 2000/60 / EC is considered a progressive and innovative legislative measure which should lead to improved of surface water in Europe. One important factor contributing to the impairment of surface water quality is the use of chemical and organic fertilizers, which through runoff or leaching in water table can cause the phenomenon of pollution of surface waters and groundwater. In a river basin, the factors that determine the nutrient loads are: industry, urban sewage, atmospheric depositi...

This paper deals with disinfection of drinking water at ?Aquatim S.A?. 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 is c...

East Donbass is one of the oldest coal mining area of South Russia. The most significant change of surface and groundwater water quality. This study is devoted to the investigation of chemical properties of surface waters. The main source of the contamination of surface and groundwater are industrial and domestic wastewaters, drainage and mine waters. Surface waters within the region have high mineralization and water hardness. Water in springs and wells is unsuitable for potable use due to high salinity and hardn...

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...

This study aimed to assess the environmental conditions of the Upper Dnieper (the reach between the cities of Smolensk and Mogilev), based on the hydrological (depth, width and flow rate of the river), hydrochemical (water temperature, pH, conductivity, and dissolved oxygen). and meteorological (air temperature, atmospheric pressure, and wind speed) data obtained by the Complex Expedition to Explore Historical Waterways of Russia (?KEIVP?), conducted by S.I.Vavilov Institute for the History of Science and Technolo...

The abandoned Regoufe mine is situated in Northern Portugal, in the Arouca Geopark. It was exploited for tungsten by underground mining till the 1970s. The tailings were deposited on the ground. The mine was abandoned without any environmental remediation. Mineralization occur in quartz veins, and consists of wolframite, cassiterite, and several sulfides (arsenopyrite, pyrite, sphalerite), bismuthinite and native bismuth (Bi). The present study aims to characterize the acid mine drainages (AMD) and superficial wat...

The introduction of the Minister of Health?s Regulation of 20 April 2010 on the quality of water intended for consumption by people resulted in the duty of testing the condition of water delivered to a consumer. In effect, a change in water quality during its distribution was noticed in many sites. There are many causes of this phenomenon, e.g. water supply system building material, quality of water coming out of the treatment station, failures and processes taking place in the system, for this reason, it is very ...

In the framework of the work, the authors conducted an analysis of the possibilities of modifying the selected rank method to evaluate the groundwater vulnerability to cpollution in the area where a source of contamination is at least partly under the surface and the groundwater interact directly with it. Such an object is among others the CTL Maczki-B?r sand mine, the workings of which are reclaimed with gangue (post-mining waste) from coal mines. The analyses of the groundwater vulnerability to pollution using a...

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...

Renewable energy is a key factor in the sustainable development of any modern society. The development of renewable energy project must continue to be part of a competitive economy and the research and innovation of this domain should be a priority. One of the renewable energy sources (RES) that are reliable, provides predictable energy, assures the energy supply in remote areas and at the end of the power transmission lines, are small hydro power plants (SHPP). In Romania SHPP are not new, being part of the devel...

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 chemical composition was assessed and the trends of spatial and temporal variability of river water quality in the Tuzlov and Seversky Donets basins which are main waterways of the Eastern Donbas (the west of the Rostov region, Russian Federation) were identified. River waters have a neutral or slightly alkaline reaction, are saturated with oxygen, and are characterized by high sulfate content and high mineralization (up to 6.8 g /dm3). Based on the results of the comprehensive assessment, the water quality of...

Article contains results of studying of quality of water of the Shershnevsky reservoir. The relationships between water chemistry parameters and aquatic macrophytes Shershnevsky reservoir (Russia) were investigated. Data on water quality and species diversity of macrophytes obtained from field studies conducted during the last two years. We studied the physico-chemical parameters such as water and air temperature, pH, conductivity, dissolved oxygen and carbon dioxide, nitrates, nitrites, ammonia, phosphates, chlor...