Pollution Of Surface Water Bodies Research Articles

Моделирование системы очистки сточных вод животноводческих ферм

Among the sources of pollution of surface water bodies from agricultural activities, livestock, pig and poultry complexes can be prioritized, which are uncontrolled and diffuse sources of suspended solids, organic compounds, biogenic elements, heavy metals and pathogenic microflora, which causes biochemical pollution and has a particularly detrimental effect on the state of inland reservoirs. Wastewater from agricultural processing enterprises and household water from rural settlements with unpredictable pollutants play a significant role in pollution. The livestock sector is one of the largest consumers of water. The large number of animals in a confined space, the use of hydraulic harvesting systems when removing their waste products, leads to the formation of manure in significant quantities. Sanitary and hygienic standards in industrial premises are supported with the help of water – animals are washed with it, rooms are cleaned, and they are disinfected, food is prepared, dishes and equipment are washed, manure is washed off with water, and so on. Accordingly, as the demand for water in animal husbandry increases, the volume of wastewater discharge that contains manure into nearby water bodies increases. The effluents that are formed as a result of the activities of the livestock sector are classified as containing a large amount of harmful substances with a high concentration. Depending on the sources of pollution and the main pollutants, technical solutions should be developed to reduce the volume of wastewater and its treatment. The effectiveness of their functioning can be ensured with the help of modern information processing methods, using methods of system analysis of complex objects based on a mathematical description of the technological process. To analyze the state of the treatment system as a whole and predict the development of emergency situations, a software implementation of a wastewater treatment system for livestock farms was created.

WATER RESOURCES OF THE KHOROSTKIV TERRITORIAL COMMUNITY: ECOLOGICAL STATUS, WATER USE PROBLEMS, OPTIMISATION MEASURES

The article analyses the ecological state of surface water resources of the Khorostkiv territorial community (ТС). According to the results of laboratory tests, pathogenic microorganisms, bacteriological indicators exceeding the regulatory requirements, faecal contamination and high content of organic matter were detected in the surface water bodies of the Khorostkiv TC. In addition to the pollution of surface water bodies in the Khorostkiv TC, an important environmental problem worth paying attention to is the lack of sanitary protection and water protection zones for rivers and ponds, as well as the littering of the coastal strip. It was found that the water supply network of the Khorostkiv territorial community includes only the water supply network of the town of Khorostkiv (30 km, unsatisfactory condition), since there are no centralised water supply systems in rural settlements. In the sources of centralised water supply in Khorostkiv, the levels of ammonium nitrogen and colour are exceeded. Hydrochemical analysis of water samples from private wells in Khorostkiv and the villages of Peremyliv and Khlopivka confirmed compliance with the requirements of SanR&R № 400. The volume of daily water consumption and water disposal was analysed. The main sources of pollution of the community's water resources and the volume of wastewater discharges were identified. Priority areas for improving the ecological state of water resources of the Khorostkiv community are substantiated. Keywords: surface water, groundwater, pollutants, water supply, water disposal, territorial community (ТС).

A machine learning based prediction of reaction parameters on reaction kinetics for treatment of industrial wastewater

Industrial wastewater is a major cause of pollution of surface water bodies since it is often discharged into these water bodies without adequate treatment. Past attempts at treating industrial wastewater have led to the emergence of multiple approaches for the removal of impurities. These include conventional techniques like biological, physical, and chemical techniques, and recently advanced oxidation processes that have, under certain specific conditions, produced desired results through decomposing contaminating organic compounds into water, carbon dioxide, or less harmful molecules. This study examines the removal of phenol in industrial wastewater using a Photo-Fenton reagent on account of its cost-effectiveness and the possibility of rapid results. The effectiveness of the removal of contaminants was assessed based on the rate of reaction (k1). Data collected through laboratory experiments was then put through various Machine Learning classifiers including Neural Network, CHAID, Generalized Linear Model, Linear Classifier, and Random Trees using IBM SPSS Modeler and models trained. An accuracy of 97.2 % was observed for the Deep Neural Network. Further, it is observed that for a specific level of impurities in industrial water, the pH of solution, intensity of light, and amount of Hydrogen Peroxide (H2O2) are the most important factors in predicting the rate of reaction with concentration of [Fe3+] ions and catalyst TiO2 playing smaller roles.

Measuring heat transfer processes in gully pots for real-time estimation of accumulated sediment depths

The accumulation of sediments in stormwater systems negatively affects their functioning. For example, the re-suspension of these sediments can lead to serious pollution of surface water bodies through combined sewer...

Possible Pollution of Surface Water Bodies with Tequila Vinasses

The aim of this study was to evaluate the water quality in two streams of the Valles region of Jalisco, Mexico and fully determine if they are being used as tequila vinasse disposal sites. Three sampling campaigns were carried out at eight different points of the two streams that run near tequila factories (TFs). Different physicochemical parameters of water quality were measured: chemical oxygen demand (COD); biochemical oxygen demand (BOD5); total suspended solids (TSSs); total phosphates; fats, oils, and grease (FOG); Kjeldal nitrogen; nitrite; nitrate; pH; conductivity; temperature; dissolved oxygen (DO); and turbidity. Also, the analysis of samples of tequila vinasses (TVs) diluted with tap water were carried out to have a reference for the level of pollution in the streams. Furthermore, due to the fact that COD could be considered the main indicator of pollution with TVs, a linear regression was performed between COD concentrations and the percentage of dilution of TVs (with tap water). A positive correlation was found between these two variables, and based on this analysis, the vinasse content was estimated at each sampling point of the streams. It was found that on average, a volume of 8.5 ± 6.3% and 11.5 ± 4.9% of TVs were present in each sampling point of the Atizcoa and Jarritos Streams, respectively. Additionally, it was found that, in general, the concentration of pollutants increased as the streams passed through the TFs, particularly the Atizcoa Stream. According to the Water National Commission criteria, most of the points would be classified as highly polluted, since they reach concentrations of COD and BOD5 up to 6590 mg/L and 3775 mg/L, respectively, temperature values up to 37 °C, and DO values of 0.5 mg/L. Therefore, it was confirmed that the streams are being used as tequila vinasse disposal sites. Due to the above, there is an urgent need for tequila companies to implement treatment systems for the vinasse generated, since under current conditions, the monitored streams are practically devoid of aquatic life.

Attenuation and soil biodegradation of fungicides by using vegetated buffer strips in vineyards during a simulated rainfall–runoff event

Rainfall–runoff events occurring in vineyard fields can result in pesticide ground losses and the subsequent pollution of surface water bodies, derivate from the crop protection spray applications. In this study, the capacity of vegetated buffer strips (BS) to prevent surface water pollution due to the application of five fungicide products typically used in vineyards (copper, dimethomorph, oxathiapiprolin, zoxamide, acibenzolar-s-methyl, and laminarin) following a simulated run-off event has been assessed, and compared to that from a bare ground soil (BG). Two strips (5 m in length, each), one with vegetation and the other without were built up, and two different experiments were performed, a runoff event and a soil fungicide degradation kinetic evaluation. The runoff results show that fungicide mass retention in the strips ranged from 73 to 98% and that the presence of vegetation in BS increased the fungicide mass retention in the strips by almost 10% (on average) in comparison to the unvegetated strip. Moreover, soil degradation studies highlighted that the presence of vegetation reduces significantly the half-time life of almost all the studied fungicides by 55%, on average. Eight fungicide transformation products (TPs) were identified following a runoff event in the soil strips, but the abundance of these TPs was up to 78% lower in vegetated strips. These results highlight the effectiveness of using vegetated buffer zones in vineyards to protect aquatic ecosystem pollution.

Obtaining high-quality antifriction grease based on modified fatty acid raw materials

The article noted that the pollution of surface water bodies by oil products as part of wastewater in Ukraine in 2020 reached 246.6 tons. For aquatic organisms, oil and oil products are highly toxic substances and belong to the group of nerve poisons. Most of the wastewater generated today in industry is subject to purification from petroleum products before discharge into the environment, however, existing purification technologies do not fully meet modern requirements. Electrochemical cleaning methods have a number of significant advantages over reagent methods: the salt content in water does not increase, which plays an important role in the organization of circulating water supply systems; less sediment is formed; the technological scheme of cleaning is simplified; there is no need to organize a reagent farm; small production areas are required for the placement of electrochemical treatment plants. The operation of electric cleaning plants is simple due to their high manufacturability and the possibility of automation. As a result of research, the optimal conditions for electroflotation water purification from oil products have been determined. The dependence of the degree of purification on the material of the anode, the pH of the initial solution and the current density was studied. It was established that the best effect is achieved in the pH range of 5-7 at current densities of 0.25-0.3 A/dm2. In the presence of sulfates, cleaning proceeds better than in the presence of chlorides, since Cl– ions intensify the point breakdown of the anode material. Among the studied materials, 08кп steel can be recommended as an anode. The nature of the electrochemical dissolution of 08kp steel depending on its preliminary treatment and the effect of such treatment on the degree of purification of water from petroleum products was studied. It is shown that when adding sulfanol НП-3 with flocculant ВПК-402 to oil-containing water, a water-insoluble complex is formed, which contributes to a more complete purification of water from oil and oil products.

Natural environment assessment of negative impact of anthropogenic factors

Sustainable development of each region of the country and improvement in living standards and public health can only be achieved by preserving natural capital and maintaining proper environmental quality. Environmental quality in the Krasnodar Region is determined by levels of anthropogenic and technogenic load on the natural environment. Sources of pressure are objects of industry, power engineering, transport, capital construction, agroindustrial complex and municipal services, which lead to pollution of atmospheric air, water and land resources, to pollution of surface and ground water and degradation of some water bodies, to disruption of ecosystems of flora and fauna. The article is devoted to the review of the condition of atmospheric air and water bodies in Krasnodar Krai, as well as to the study of pollution indicators of discharged wastewater in the territory of the region. Information on indicators of polluted wastewater discharge into water bodies is presented, a grouped table is determined on the basis of these pollution indicators, which indicates the main reasons for the continued pollution of surface water bodies, conclusions are drawn as to what measures to solve the global environmental problem should be taken to improve the quality of wastewater treatment.

Development of new resource-efficient approaches to the solution of the problem of purification of naphtha local wastewater

The article noted that the pollution of surface water bodies by oil products as part of wastewater in Ukraine in 2020 reached 246.6 tons. For aquatic organisms, oil and oil products are highly toxic substances and belong to the group of nerve poisons. Most of the wastewater generated today in industry is subject to purification from petroleum products before discharge into the environment, however, existing purification technologies do not fully meet modern requirements. Electrochemical cleaning methods have a number of significant advantages over reagent methods: the salt content in water does not increase, which plays an important role in the organization of circulating water supply systems; less sediment is formed; the technological scheme of cleaning is simplified; there is no need to organize a reagent farm; small production areas are required for the placement of electrochemical treatment plants. The operation of electric cleaning plants is simple due to their high manufacturability and the possibility of automation. As a result of research, the optimal conditions for electroflotation water purification from oil products have been determined. The dependence of the degree of purification on the material of the anode, the pH of the initial solution and the current density was studied. It was established that the best effect is achieved in the pH range of 5-7 at current densities of 0.25-0.3 A/dm2. In the presence of sulfates, cleaning proceeds better than in the presence of chlorides, since Cl– ions intensify the point breakdown of the anode material. Among the studied materials, 08кп steel can be recommended as an anode. The nature of the electrochemical dissolution of 08kp steel depending on its preliminary treatment and the effect of such treatment on the degree of purification of water from petroleum products was studied. It is shown that when adding sulfanol НП-3 with flocculant ВПК-402 to oil-containing water, a water-insoluble complex is formed, which contributes to a more complete purification of water from oil and oil products.

The Consequence of Artisanal Gold Mining on Heavy Metals Exposure to Water in Anka, Zamfara State Nigeria

Over the decade many villages in Zamfara State Nigeria were known for artisanal gold mining which caused pollution of vast water bodies and area of land. This makes it imperative to analyze heavy metal contamination in wells and surface water. The present study evaluated the concentrations of heavy metals (iron, lead, cadmium, zinc, nickel, and chromium) in the ore processing water and well-water in some selected villages of Anka local government area in Zamfara State where mining is taking place. Anka town served as control due to absence of mining activities. The concentrations of heavy metals in the water samples were measured using atomic absorption spectrophotometry. The concentration of Fe, Pb, and Cd ranged from 23.3 – 921.46, 0 – 132.8, and 3.3 – 4.1 ppm respectively. While Zn, Ni, and Cr were not detected in the water samples. Virtually all the detected heavy metals in the water samples exceeded the international organizations (WHO, USEPA, and EPA-EUC) maximum permissible limit of 0.3 – 1.00, 0.01 – 0.05, and 0.03 – 0.05 ppm of Fe, Pb, and Cd in water samples respectively. Interestingly, all the well-water from all the study locations was not contaminated with Pb despite its high concentrations in the processing water. Meanwhile both the processing water and well water were contaminated with Fe and Cd. These revealed that artisanal gold mining is contributing to the pollution of surface water bodies (used for irrigation and drinking) with Pb, while Fe and Cd may be in addition to their abundance in natural soil deposits.

A site-specific indicator of nitrogen loads into surface waters from conventional and conservation agriculture practices: Bayesian network model

Agriculture is one of the main sources of diffuse pollution, such as fertilisers, plant protection products, solid particles or pathogens. The short- and long-term impact of agriculture on surface water quality is often driven by on-farm decisions as to what practices are used to manage weeds. Farming practices can affect numerous processes such as surface runoff and soil erosion which mediate release and transport of potential pollutants to edge-of-field water courses. Excessive nitrogen emissions are an ongoing problem of many farmlands, leading to pollution of surface water bodies and causing adverse outcomes such as eutrophication, resulting in deteriorating water quality. We developed a Bayesian Network (BN) model to predict nitrogen load into surface waters at the farm level using site specific characteristics such as landscape, soil, cropping system and, also, to compare different conventional and conservation agriculture practices. The BN was built from well-established and accepted models i.e., surface runoff by water is based on the Curve Number method (CN), the soil erosion rate is calculated with the Universal Soil Loss Equation (USLE), and nitrogen load is calculated based on a multilevel model, where the CN and the USLE outputs are used as inputs. All three sub-models produced satisfactory spread around 1:1 line. A classification technique was applied to evaluate predicted nitrogen loads against the reference data from the US EPA STEPL model with respect to nitrogen load threshold values. Out of all the data simulated with the BN 83 % agree with the reference model for the 20 kg/(ha × yr) nitrogen load threshold, and 97 % agree when the threshold is set to the middle of the prediction range, 100 kg/(ha × yr). The modelling exercise was performed on two pedo-climatic scenarios differing in their potential to generate surface runoff water and by considering the effect of combining three farming practices and two generic groups of crops on emitted nitrogen loads expressed as the Grey Water Footprint (GWF). Sensitivity analysis shows high importance of weather inputs for surface runoff, and topographic information for soil erosion, whereas agricultural treatments were ranked as less important. Under variable precipitation no-till practice would result in reducing emissions of water, soil and nitrogen compared to conventional farming. The results indicate that no-till practice would reduce nitrogen loads on sites with varying risk of runoff, and that a combination of no-till and small grain crops provides the best benefit in reducing nitrogen emissions. We demonstrate that a Baye’s net is a useful, flexible tool for data and knowledge assimilation and a practical approach to test and compare effects of various agricultural interventions on pollutant emissions from a farming system.

Groundwater quality using indices for domestic and irrigation purposes in Akure, Nigeria

Groundwater exploration has become more critical for agricultural and domestic purposes due to the overexploitation, depletion and widespread pollution of surface water bodies. The study is focused on evaluating these groundwater sources for their suitability for domestic and irrigation applications, as well as a quality-based investigation of these sources.Thirty (30) boreholes were investigated across the study area Akure, Ondo State to achieve the aforementioned aim. This was carried out by the analysis of physico-chemical parameters, determination of water quality index and evaluating irrigation indices. Moreover, Gibbs diagram was used to characterize ground water samples. Resultsshow the groundwater to be slightly acidic in nature with pH values falling below the 6.5 benchmark. According to evaluated indices, Sodium ratio also showed that 76.7% of the water samples is in “good” category, 20% is in “permissible” category, and 3.3% is in the “poor” category. the water is suitable for irrigation and can support plant yield. Based on Water Quality Index (WQI) assessment, majority of the water samples (82%) can be classified as “good”, 16% of the samples were excellent, while 2% were found to be moderate indicating that the water quality in terms of its drinking standard is generally good as obtained from this study. Data plotted in Gibbs diagram reveal that the groundwater chemistry is primarily controlled by rock-water interaction.

Rapid Assessment Method for Evaluation of the Weighted Contribution of Anthropogenic Pollution: A Case Study of Lake Burullus, Egypt

This paper proposes a pragmatic approach for rapid assessment of the weighted contribution of the main waste streams contributing to pollution of surface water bodies. A case study was conducted on Lake Burullus in Egypt. The lake suffers from pollution due to many human-based activities around the lake, such as domestic, industrial, agriculture, fish farming, and solid wastes. The weighted contribution of these activities was assessed in terms of chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP). The results showed that the highest organic load is due to the domestic wastewater pollution component (63.2% of COD load), followed by fish aquaculture (35.4%). The highest TN (43.9%) and TP (58.3%) pollutant loads to Lake Burullus are due to the agricultural pollution component, followed by fish aquaculture with pollutant loads of 28.5% and 25.3%, respectively. The industrial wastewater pollution component has a very small effect on the pollution of Lake Burullus. The assessment of this study will help identify and magnify the key polluters and thus guide the decision-makers to prioritize investment planning for depollution intervention projects. For example, if the target is to reduce COD loads, investments must be directed toward the rehabilitation and expansion of wastewater treatment plants (WWTPs).

Environmental Assessment of Surface Water Body Quality (on the Example of the Psel River)

Purpose. To analyze the qualitative malt of the surface water body to determine changes in its ecological status. Methods. Statistical and systematic analysis of ecological status changes was performed according to the interactive map "Monitoring and ecological assessment of water resources of Ukraine" of the river Psel for 2012 - 2020 on the following indicators: nitrates, nitrites, phosphates, ammonium ions, sulfates, chlorides. Results. It was found that in the Psel River in 2019 there was a decrease in the total phosphate content from point Nr 1 to point Nr 6. At the same time, there is a significant increase near Bishkin village. The reason may be the placement of a fence post in a settlement where there are no treatment facilities. There is an increase in nitrate concentration, while in the Kaminne village and Velyka Bagachka urban-type settlement there is a decrease in nitrate concentrations, which may be associated with their consumption of phytoplankton, which should lead to increased turbidity and biological oxygen demand. The increased concentration of nitrites indicates the intensity of decomposition of organic matter, and the delay of oxidation of NO2– to NO3–, which clearly indicates the pollution of the reservoir. Nitrates and nitrites enter the water from the effluents of industrial and agricultural enterprises. The decrease in the ammonium ions concentration (the Chervone village) is most likely due to their oxidation, dissolved in water by oxygen, with the formation of nitrate ions. There is an increase in chloride content. The increase in chloride concentration near the Byshkin village and the Kaminne village is due to the pollution of surface water bodies with domestic wastewater. There is an increase in the sulfates content. For the manufacture of fertilizers or chemicals in the technological process at the enterprise sulfuric acid is used. Therefore, it can be assumed that the discharges of untreated water by the enterprise can be the reason for the increase in the content of sulfates in the river water. Conclusions. An analysis of changes in the ecological status of the Psel River on the basis of data «Monitoring and environmental assessment of water resources of Ukraine» for 2012 – 2020 was performed. It is revealed that the river Psel is under rgular technogenic impact, has a tendency to steady deterioration of its ecological condition.

Method to localize snowmelt runoff pollutant sources of surface water bodies by paired geoinformation and hydrological analyses

The quality of melt runoff from agricultural fields significantly affects the quality of surface water bodies and their ecosystem services. Currently, methods based on geographic information systems (GIS) are used with aim to reduce the risk of pollution of surface water bodies. Thus do make possible a localization of pollutants sources at rural areas and their transport routes to the water bodies. This paper presents the results of geoinformation analysis of the results of melt runoff sampling as well as cartographic modeling of melt runoff on the territory of the summer field dacha (SFD) of the RSAU-MTAA.In early April 2018 a specially designed fields monitoring was accomplished. Twenty water samples were taken at the locations of ten catchment’s outlets located within the SFD territory. Chemical analyzes identified 5 inorganic chemical components with high concentration values. Digital elevation model (DEM) of the plot area was generated from UAV data for the analysis of the territory’s topography. Spatial analysis of samples in combination with hydrological analysis of DTM showed differentiation in pollution of snowmelt runoff by catchments. This enabled to identify some catchments as providers of the biggest negative contribution to the quality of melt runoff.

WITHDRAWN: Prediction of reaction parameters on reaction kinetics for treatment of industrial wastewater: A machine learning perspective

Abstract Industrial wastewater is a major cause of pollution of surface water bodies since it is often discharged into these water bodies without adequate treatment. Past attempts at treating industrial wastewater have led to emergence of multiple approaches for removal of impurities. These include conventional techniques like biological, physical and chemical techniques, recently advanced oxidation processes that have, under certain specific conditions, produced desired results through decomposing contaminating organic compounds into water, carbon-di-oxide or less harmful molecules. This study examines removal of phenol in industrial wastewater using Photo-Fenton reagent on account of its cost effectiveness and possibility of rapid results. The effectiveness of removal of contaminants was assessed based on rate of reaction (k1). Data collected through laboratory experiments was then put through various Machine Learning classifiers including Neural Network, CHAID, Generalized Linear Model, Linear Classifier and Random Trees using IBM SPSS Modeler and models trained. An accuracy of 97.2% was observed for Deep Neural Network. Further it is observed that for a specific level of impurities in industrial water, pH of solution, intensity of light and amount of Hydrogen Peroxide (H2O2) are the most important factors in predicting rate of reaction with concentration of [Fe3+] ions and catalyst TiO2 playing smaller roles.

ANALYSIS OF THE EFFICIENCY OF WASTEWATER REMEDIATION TECHNOLOGIES USING MICROALGAE

The object of research: the technology of wastewater remediation. Investigated problem: improving the efficiency of biogenic and toxic elements removal from different types of wastewater and reducing the amount of waste in the removal process. The main scientific results: Possible strains of microalgae, which have ability to absorb biogenic and toxic elements during their metabolism, are identified. It is shown that the use of microalgae is a promising method of wastewater remediation due to their wide availability, the ability to reduce pollution to the established maximum allowable discharge into reservoirs and the ability to accumulate high biomass, which can serve as raw material for industrial products. In particular, Oscillatoria spp. effectively removes chromium, Chlorella vulgaris effectively removes cadmium, copper and zinc, Chlamydomonas spp. effectively removes lead, Euglena gracilis effectively removes nitrogen and phosphorus compounds. It is also shown that the most effective way to solve the problem of restoring the biomass of algae obtained in wastewater is to use immobilized cell systems. The use of immobilized systems can also increase the resistance of cells and the rate of their removal of various pollutants and xenobiotics from wastewater. The area of practical use of the research results: Municipal enterprises for domestic and surface wastewater treatment. Enterprises for the treatment of industrial effluents. Enterprises for biomass processing, production of motor fuels, biogas, organic fertilizers. Innovative technological product: The technology of remediation of domestic, surface and industrial wastewater, which allows to effectively purify these waters from toxic and biogenic elements and reduce pollution of surface water bodies. The technology assumes the absence of waste, as the resulting biomass of microalgae is considered as a raw material for the production of various products. Scope of the innovative technological product: Technological schemes of domestic, rain and industrial wastewater remediation, protection water bodies from pollution, improvement of surface water quality.

The springs in the Barra Mansa Municipality and its uses: reflection for the development of environmental awareness and water governance

Groundwater is an excellent alternative to meet public water supply demands, especially in the face of the water crisis and pollution of surface water bodies. Many municipalities throughout the national territory use water from springs for urban water supply. Barra Mansa, a city located in the southern Fluminense region, is an example of this. The aim of this study was to evaluate the water quality of three springs located in the city of Barra Mansa, in order to verify its water potential. The results obtained showed the water potential of the Municipality, revealing, however, the state of degradation and the risk of contamination of groundwater, imposing the need to develop measures to preserve, prevent and mitigate anthropic impacts on the water sources. In this way, the questions proposed here may contribute to a reflection about the exploration of the sources and the implications inherent to its use.

Методичні аспекти оцінювання стану хімічного забруднення та якості води поверхневих водойм в Україні

The main sources of chemical pollution of surface water bodies of Ukraine are shown and it is noted that the ecosystem of the environment and water resources, being under constant man-caused load, tend to steadily deteriorate the ecological condition. Methods for assessing the quality of surface waters using the maximum allowable concentrations of harmful substances in water and a comprehensive assessment of the ecological status of surface water by integrated hydrochemical parameters are described. International approaches to the assessment of the state of surface water bodies are considered. It is noted that the most complete information on the state of the aquatic ecosystem can be obtained using a set of physicochemical and biological parameters. There are shortcomings in the monitoring of organic micro-pollutants in surface waters. The analysis of the international experience of determination of water quality and parameters of toxicological action of organic micro-pollutants with application of chemo-informative methods for modeling of an ecological condition of water systems is carried out.

Scientific rationale of measures on prevention of pollution of surface water bodies in Kharkiv region

Today, in Kharkiv region, most of the surface water bodies as a result of man-made and anthropogenic loading have lost their natural purity and the ability to self-purify. One of the features of water resources of the region is that the rivers, which serve as the main sources of water supply, are also used as receivers of treated wastewater. In order to analyze the state of pollution of the aquifer of Kharkiv region during 2007–2016, laboratory studies of water of surface water reservoirs of the 1st and 2nd categories were conducted and summarized. The researchers have found that over the past 10 years the pollution of surface water bodies of the 1st category according to sanitary-chemical indicators is at the level of 4.5%, microbiological indicators – 14%, water pollution of reservoirs of the 2nd category is 20% and 12%, respectively. In order to prevent the occurrence of diseases of different etiology among the population of Kharkiv region, the source of which is the water factor, a set of methodical and practical measures that will contribute to the improvement of the surface water of the region has been developed