scholarly journals Improved water pollution index for determining spatiotemporal water quality dynamics: Case study in the Erdao Songhua River Basin, China

2021 ◽  
Vol 129 ◽  
pp. 107931
Author(s):  
Binbin Wang ◽  
Yuanyuan Wang ◽  
Shuli Wang
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
River Basin ◽  
Pollution Index ◽  
Songhua River ◽  
Water Pollution Index ◽  
Songhua River Basin

scholarly journals The Assessment of the Surface Water Quality Using the Water Pollution Index: A Case Study of the Timok River (The Danube River Basin), Serbia

2012 ◽  
Vol 38 (1) ◽  
pp. 49-61 ◽  
Author(s):  
Jovana Brankov ◽  
Dragana Milijašević ◽  
Ana Milanović
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Oxygen Demand ◽  
Pollution Index ◽  
Surface Water Quality ◽  
Danube River ◽  
Water Pollution Index ◽  
The Danube River ◽  
The Republic

The Assessment of the Surface Water Quality Using the Water Pollution Index: A Case Study of the Timok River (The Danube River Basin), Serbia The Timok River (202 km long, 4547 km2 basin area) is located in East Serbia. It is a right tributary of the Danube River and one of the most polluted watercourses in Serbia. On the basis of the data provided by the Republic Hydrometeorological Service of Serbia, the paper presents an analysis of water quality and pollution using the combined physico-chemical WPI index (Water Pollution Index) calculated for two periods - 1993-96 and 2006-2009 at four hydrological stations: Zaječar-Gamzigrad (Crni Timok River), Zaječar (Beli Timok River), Rgotina (Borska Reka River) and Čokonjar (Timok River). The following parameters were taken into consideration: dissolved O2, O2 saturation, pH, suspended sediments, Five Day Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (CODMn), nitrites, nitrates, orthophosphates, ammonium, metals (Cu, Fe, Mn, Hg, Ni, Zn, Cd), sulphates and coliform germs. The average WPI values were calculated for the observed periods based on the comparison of the annual average values of the listed parameters and defined standard values for the I water quality class (according to the Regulation on the Hygienic Acceptability of Potable Water of the Republic of Serbia). The highest pollution degree was recorded in the Borska Reka River, where heavy metal levels (especially manganese and iron) were significantly increased. These metals are indicators of inorganic pollution (primarily caused by copper mining). Also, increased values of the organic pollution indicators (ammonium, coliform germs, Five-Day Biological Oxygen Demand - BOD5) in the Borska Reka and the Timok rivers are the result of uncontrolled domestic wastewater discharge.

GEOECOLOGICAL ASSESSMENT OF SURFACE WATER OF A RIVER BASIN WITH MATHEMATICAL ANALYSIS (on the example of the Ile River)

2021 ◽  
Vol 103 (4) ◽  
pp. 6-19
Author(s):  
Zh.S. Mustafayev ◽  
◽  
L.M. Ryskulbekova ◽  
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Surface Water ◽  
River Basin ◽  
Pollution Index ◽  
Surface Water Quality ◽  
Water Bodies ◽  
Limiting Factors ◽  
Catchment Basin ◽  
Water Pollution Index

Based on the structural analysis of complex hydrochemical indices for assessing surface water pollution used in various river basins, and the laws of limiting factors, a mathematical model was obtained in the form of the maximum permissible water pollution coefficient (Kпдзi), representing the product of the water content coefficient (Kb) and the maximum water pollution (Kпзi), by based on the laws of nature, principles and properties of natural processes in, together with the water pollution index (ИЗВ), are used for the geoecological assessment of the surface water quality of the Ile River basin on a spatial-temporal scale, taking into account the regulatory criteria for maximum permissible concentrations of pollutants for fishery water bodies, that between the coefficient of the maximum permissible water pollution (Kпдзi) and the water pollution index (ИЗВ) there is a pronounced relationship, described by a logarithmic equation, allowing them to be used to assess the ecological state water bodies. Water quality assessment was carried out for four hydrological sections of the Ile River catchment basin, which showed that water pollution is of a transboundary nature, since at the Dobyn hydrological station, located on the borders of the Republic of Kazakhstan and the People's Republic of China, the water quality is «polluted», and from the Kapshagai reservoir to Lake Balkhash «moderately polluted», where due to the selfcleaning ability of the aquatic ecosystem and the waters coming from the tributaries, there is some improvement in water quality.

Research of Spatial-Temporal Transformation of the Qualitative Composition of the River Salgir Waters

2020 ◽  
Vol 24 (3) ◽  
pp. 65-71
Author(s):  
N.M. Ivanyutin ◽  
S.V. Podovalova ◽  
N.E. Volkova
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Ecological Status ◽  
Pollution Index ◽  
Petroleum Products ◽  
Water Pollution Index ◽  
River Waters ◽  
Load Increase ◽  
Treatment Facilities ◽  
Temporal Transformation

The main objective of the research is a complex assessment of the actual ecological status of Salgir River waters based on several methods: visual survey of the watercourse as well as studying spatial and temporal transformation of water quality and determining the degree of water pollution by means of an integral criterion –water pollution index (IES) and bioassay techniques carried on seeds of two test crops (cress salad and wheat), and also zoning a watercourse according to several criteria. The assessment found a tendency to increasing degradation of water quality due to the increase of the anthropogenic load (increase in water abstracted from the river). The typical pollutants in the Salgir river are petroleum products, phosphates, lead, copper, biological oxygen uptake (BOU5). Phosphate content is in the range of 5.5–27.5, lead – 3.06–6.67, copper –1.02–4.52 MPC. The most powerful source of pollution of the river is the treatment facilities of Simferopol. The results of this comprehensive study made it possible not only to reflect the real situation at the water facility, but also to highlight sections of the river where a set of measures aimed at reducing/preventing the consequences of anthropogenic impact should be carried out as a priority.

scholarly journals NITRATE CONTENT OF DRINKING WATER AND THEIR EFFECTS ON POPULATION HEALTH

10.23856/3715 ◽  
2020 ◽  
Vol 37 (6) ◽  
pp. 148-156
Author(s):  
Olena Stadnichuk ◽  
Liliia Kropyvnytska ◽  
Ivan Martyniuk ◽  
Mykola Platonov ◽  
Mykola Kucher
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Circulatory System ◽  
Pollution Index ◽  
Nitrate Group ◽  
Nitrate Content ◽  
Nitrogen Compounds ◽  
Water Pollution Index

The problems of drinking water quality have been considered in some settlements of the Turkivskiy district of Lviv region, in particular concerning the content of Nitrogen compounds. 20 sources of decentralized water supply were investigated. It was found that the main hydrochemical indicators of water samples mainly met the requirements for the degree of contamination of hygienic classification of water bodies. At the same time, analyzing the samples for the presence of nitrogen compounds, it was found that in the tested samples: the content of nitrate ions fluctuated within 0,02 - 016 mg/dm3 (average annual values did not exceed the permissible value); the content of ammonium ions is in the range of 0.5-2.8 mg/dm3, which did not significantly exceed the maximum permissible value. At the time, analysis for NO3- showed an excess of acceptable values in almost all samples by 1.3 у 4.2 times. It was found that the amount of nitrates decreased with the transition from the alluvial aquifers to the indigenous ones, where the average content was 108.9 mg/dm3 and 86.8 mg/dm3, respectively. This is probably due to better protection of the bedrock from surface contamination, greater capacity of the corresponding aquifers and their deeper occurrence. According to the average value of the water pollution index for the nitrate group, the studied objects of decentralized water supply belong to the second class ‒ moderately contaminated. The correlation between the water pollution index by nitrate group and the population morbidity is calculated to be direct and sufficiently high (0.73). The most associated indicators of water quality are diseases of the circulatory system, blood and hematopoietic organs, digestive organs, endocrine and urogenital systems.

THE FORMING OF WATER FLOW AND ENVIRONMENTAL STATE OF WATER IN THE GUYVA RIVER

2018 ◽  
pp. 22-29
Author(s):  
P. Lozovitskiy ◽  
А. Моlоchko
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Chemical Composition ◽  
Salt Content ◽  
Pollution Index ◽  
Annual Average ◽  
Water Pollution Index ◽  
State Of Water ◽  
Fluctuation Dynamics ◽  
Comparative Results

The fluctuation dynamics of average annual, average monthly and minimum annual discharges of the Guyva River for 1938–2010 years on the Horodkivka, Peski gauging Stations is given. Comparative results of chemical composition and water salinity in the Guyva river are given for the periods of 1967–2015. The article presents the results of environmental assessment of water quality on the criteria of components of the salt content pollution, environmental sanitation indexes and content of specific substances toxic effects. The water pollution index is calculated and the overall assessment of pollution is made by the whole set of indicators. Keywords: fluctuations in water consumption, chemical composition, mineralization, quality assessment, water pollution.

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