scholarly journals Analysis and forecast of the ecological conditions of surface water in Uzbekistan

2020 ◽  
Vol 26 (1) ◽  
pp. 242-256
Author(s):  
Bakhtiyor Kurbanov ◽  
Azimjon Primov ◽  
Bobir Kurbanov
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Waters ◽  
High Surface ◽  
Surface Water Quality ◽  
Actual State ◽  
Source Information ◽  
Maximum Permissible Concentrations ◽  
The Republic

In the Republic of Uzbekistan, an increasing shortage of water resources and insufficient supply of clean drinking water is forcing the population to use river water for domestic and drinking needs. Moreover, the health of the population largely depends on the quality of surface waters. This fact makes it relevant to monitor surface water, identify areas with high pollution, identify the most dangerous ingredients for the health of the population and take measures to minimize them. The hydrometeorological service of the Republic of Uzbekistan currently uses a methodology for assessing the quality of surface water that was developed back in 1988 and does not meet modern requirements. For this reason, in the operational practice of Russia since 2002, the “Method of a comprehensive assessment of the degree of pollution of surface waters by hydrochemical indicators” has been used, which is more promising. A method for assessing the quality of surface water is proposed, based on an analysis of the source information for all gauging stations and ingredients. This article presents the results of the development of a map of hydroecological zoning based on materials for 1997–2006 and a forecast map of hydroecological zoning for 2015. The forecast is based on hydrochemical data, which included information on the hydrochemical composition of surface waters for 1997–2006 for all posts of the republic. According to the research results, areas with increased pollution of surface water and ingredients with a significant excess of maximum permissible concentrations were identified. Among them, mercury occupies a special place. A comparative analysis of the forecast map with a map of the actual state of surface water quality, developed by us based on the materials of the hydrometeorological service of the Republic of Uzbekistan for 2014–2015, is carried out. The analysis showed a good agreement between the forecast data on the location of areas with unsatisfactory surface water quality and the actual materials, which makes it possible to use a forecast map to identify problem areas with high surface water pollution. Studies have revealed the need for high-quality laboratory chemical analyzes of water for all the ingredients included in the database of the hydrometeorological service of the Republic of Uzbekistan. In this case, special attention should be paid to such highly toxic ingredients as mercury. Urgent measures must be taken to inventory mercury sources in surface waters and measures should be developed to minimize its release.

scholarly journals On the issue of the Uzbekistan surface water quality assessment

2019 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Surface Water ◽  
Surface Waters ◽  
Surface Water Quality ◽  
Water Quality Assessment ◽  
Soviet Period ◽  
Hazard Class ◽  
Difficult Situation

The article is devoted to the analysis of the quality of surface water in Uzbekistan. Analyzed their impact on the living conditions and health of the population of the republic. The most difficult situation with drinking water supply and with the growth of diseases caused by the use of poor-quality drinking water falls on the Navoi, Khorezm, Surkhandarya regions and Karakalpakstan. The stated data makes it relevant to conduct research to determine the quality of surface waters and improve the methods of its assessment. The analysis of existing methods for assessing the quality of surface waters. The technique of assessment of the index of pollution of water applied now in Uzbekistan counted in compliance with “Methodical recommendations about the formalized complex evaluation test of the surface and ocean waters about hydro/chemical indexes” was developed in Soviet period and doesn’t meet the modern requirements. The need to improve the methods for assessing the quality of surface waters as compared with that currently used in Uzhydromet is indicated. One of the most promising at present is the “Method of integrated assessment of the degree of contamination of surface waters by hydro/chemical indicators” developed and used in operational practice in Russia. The most informative comprehensive estimat water pollution and the class of water quality. The author proposed methods for assessing the quality of surface waters, the calculation of which is based on the use of a larger amount of initial information and are more reliable than those used. In particular, the proposed methodology for assessing the quality of surface waters, taking into account the hazard class of ingredients.

scholarly journals Surface water quality of small rivers in the Ukrainian regions of right-bank Polissia

2021 ◽  
Vol 280 ◽  
pp. 10005
Author(s):  
Igor Gopchak ◽  
Tеtiana Basiuk ◽  
Artem Yatsyk ◽  
Oksana Yaromenko
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Waters ◽  
Surface Water Quality ◽  
Ecological Condition ◽  
Small Rivers ◽  
Protection Measures ◽  
Ecological Index ◽  
Satisfactory Condition

The quality of surface waters of small rivers of the Ukrainian regions of right-bank Polissia, belonging to the basin of the river Pripyat, was estimated. The study was conducted via systematic observations based on the ecological classification of surface water quality of land and estuaries of Ukraine, which includes a set of hydrophysical, hydrochemical, hydrobiological and other indicators, which were grouped into three blocks of indicators: salt composition of water; tropho-saprobiological (ecologicalsanitary) block; specific substances of toxic action. The integrated (ecological) index was determined, by which the class and category of surface water quality were established. The results of observations on the quality of surface waters of the rivers of the Ukrainian regions of right-bank Polissia indicate their satisfactory condition. Surface waters, on average, correspond to the II class of water quality, and the worst - to the III class. Water protection measures have been proposed to improve the ecological condition of small river basins in specified region.

Current state of small water reservoir from technical and ecological viewpoint

2021 ◽  
Author(s):  
Zuzana Sabová ◽  
Zuzana Németová ◽  
Tatiana Kaletová ◽  
Silvia Kohnová
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Reservoir ◽  
Surface Water Quality ◽  
Field Measurements ◽  
Actual State ◽  
Environmental Aspects ◽  
Small Water ◽  
Current State

AbstractThe objective of the study is an assessment of a Ratka small water reservoir in Slovakia by using two main aspects, i.e., the hydrotechnical, geotechnical and environmental aspects.An evaluation of the actual state of a small water reservoir was solved in a complex way. Based on the field measurements, the quality of surface water was controlled in order to check if the surface water quality indicators meet the requirements of government regulations. In addition to the terrain measurements, laboratory measurements were performed. The results assess the actual state of the small water reservoir in details, including an assessment of the water quality with proposed measures for improving the condition of the water reservoir.

scholarly journals ECOLOGICAL ASSESSMENT OF SURFACE WATER QUALITY OF ROSTAVYTSIA RIVER

2020 ◽  
pp. 86-92
Author(s):  
Pavlo Smilii ◽  
Mykhailo Melniychuk
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Indicators ◽  
Environmental Assessment ◽  
Surface Waters ◽  
Ecological Status ◽  
Surface Water Quality ◽  
Ecological Assessment ◽  
Salt Composition

Purpose – perform ecological assessment of the surface waters of the Rostavytsia river within the Zhytomyr region. Method. Environmental assessment of the surface water of the Rostavytsia river was carried out using the system of classification of standards for the assessment of surface water quality of Ukraine. On the basis of common environmental criteria, the methodology makes it possible to compare the quality of water at different sites of water bodies, in water bodies of different regions. The calculation of the ecological assessment of water quality was carried out within three blocks: block of salt composition (І1), block of trophic-saprobiological (ecological-sanitary) indicators (І2) and block of indicators of content of specific substances of toxic action (І3). The results are presented in the form of a combined environmental assessment based on the final conclusions of the three blocks and based on the calculation of the integrated environmental index (IE). Results. Omprehensive studies on changing the water quality of the Rostavytsia river were conducted within the Zhytomyr region during 2016-2017. The water quality of the river according to the final values of the integral indicators of water quality of the three blocks varies within the II and III quality classes. The total environmental indices (IE) for the mean and worst indices are 3,2 and 3,3 respectively. In general, the water quality along the main channel of the Rostavytsia river within the Zhytomyr region corresponds to the second class, 3 categories, 3 subcategories according to the average quality indicators and 3(4) subcategories by worst performance. The total values of the integral surface water quality indicators of the Rostavytsia river indicate their contamination by trophic-saprobiological components. Scientific novelty. For the first time, on the basis of analytical studies and stock materials, an ecological assessment of the surface waters of the Rostavytsia river within the Zhytomyr region was carried out by three blocks of indicators: salt composition, trophic-saprobiological indicators and specific toxic substances. The integral ecological index is determined. The trends of pollutants accumulation in the surface waters of the Rostavytsia river have been established. Practical significance. The conducted researches allowed to analyze and evaluate the ecological status of the surface waters of the Rostavytsia river within the Zhytomyr region, which will allow to establish ecological standards of water quality and on this basis to determine the main directions for improvement of water resources and to substantiate the system of recommendations aimed at improving the ecological status of the studied basin.

scholarly journals ECOLOGICAL ASSESSMENT OF THE SURFACE WATER QUALITY OF THE GUYVA RIVER

2020 ◽  
pp. 52-57
Author(s):  
Pavlo Smilii
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Indicators ◽  
Environmental Assessment ◽  
Surface Waters ◽  
Ecological Status ◽  
Surface Water Quality ◽  
Ecological Assessment ◽  
Salt Composition

Method. Environmental assessment of the surface water of the Guyva River was carried out using the system of classification of standards for the assessment of surface water quality of Ukraine. On the basis of common environmental criteria, the methodology makes it possible to compare the quality of water at different sites of water bodies, in water bodies of different regions. The calculation of the ecological assessment of water quality was carried out within three blocks: block of salt composition (І1), block of trophic-saprobiological (ecological-sanitary) indicators (І2) and block of indicators of content of specific substances of toxic action (І3). The results are presented in the form of a combined environmental assessment based on the final conclusions of the three blocks and based on the calculation of the integrated environmental index (IE). Results. omprehensive studies on changing the water quality of the Guyva River were conducted within the Zhytomyr region during 2016-2017. The water quality of the river according to the final values of the integral indicators of water quality of the three blocks varies within the II and III quality classes. The total environmental indices (IEs) for the mean and worst indices are 2,9 and 3,1 respectively. In general, the water quality along the main channel of the Guyva River within the Zhytomyr region corresponds to the second class, 3 categories, 3(2) subcategories according to the average quality indicators (in the state of "good" with a slope to "very good", in terms of purity bias to "clean") and 3 subcategories by worst performance (good for good, clean enough). The total values of the integral surface water quality indicators of the Guyva River indicate their contamination by trophic-saprobiological components. Scientific novelty. For the first time, on the basis of analytical studies and stock materials, an ecological assessment of the surface waters of the Guyva River within the Zhytomyr region was carried out by three blocks of indicators: salt composition, trophic-saprobiological indicators and specific toxic substances. The integral ecological index is determined. The trends of pollutants accumulation in the surface waters of the River Guyva have been established. Practical significance. The conducted researches allowed to analyze and evaluate the ecological status of the surface waters of the Guyva River within the Zhytomyr region, which will allow to establish ecological standards of water quality and on this basis to determine the main directions for improvement of water resources and to substantiate the system of recommendations aimed at improving the ecological status of the studied basin.

scholarly journals Dynamics of changes in surface water quality indicators of the Western Bug River basin within Ukraine using GIS technologies

2019 ◽  
Vol 42 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Igor Gopchak ◽  
Tetiana Basiuk ◽  
Ihor Bialyk ◽  
Oleg Pinchuk ◽  
Ievgenii Gerasimov
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Environmental Assessment ◽  
Land Surface ◽  
Surface Water Quality ◽  
Ecological Condition ◽  
Toxic Substances ◽  
Ecological Index ◽  
Gis Technologies

Abstract The environmental assessment of the surface water quality of the Western Bug River has been made using the system of classification quality of land surface water of Ukraine in accordance with the approved methodology, which allows comparing water quality of separate areas of water objects of different regions. The calculation of the environmental assessment of water quality has been carried according to three blocks: block of salt composition, block of trophic and saprobic (ecological and sanitary) indicators and block of indicators of content of specific toxic substances. The results are presented in the form of a combined environmental assessment, based on the final conclusions of the three blocks and consists in calculating the integral ecological index. Comprehensive studies of changes in the water quality of the Western Bug River have been conducted within the territory of Ukraine for a long-term period. The water quality of the river on the final values of the integral indicators of the ecological condition corresponded mainly to 4nd category of the 3rd class – the water is “satisfactory” by condition and “little polluted” by degree of purity (except for points of observation that located within the Volyn region, where the water quality corresponded to 3rd category and the 2nd class. It is “good” by condition and “fairly clean” by the degree of purity). Visualization and part of the analysis are performed using GIS technologies in the software of the ArcGIS 10.3.

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