scholarly journals WATER QUALITY ASSESSMENT OF RIVERS IN PADANG USING WATER POLLUTION INDEX AND NSF-WQI METHOD

2019 ◽  
Vol 17 (64) ◽  
Author(s):  
Indang Dewata
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Quality Assessment ◽  
Pollution Index ◽  
Water Quality Assessment ◽  
Water Pollution Index

scholarly journals Water quality assessment of the Borska Reka river using the WPI (Water Pollution Index) method

2011 ◽  
Vol 63 (3) ◽  
pp. 819-824 ◽  
Author(s):  
Dragana Milijasevic ◽  
Ana Milanovic ◽  
Jovana Brankov ◽  
M. Radovanovic
Keyword(s):  
Water Pollution ◽  
Oxygen Demand ◽  
Pollution Index ◽  
Domestic Wastewater ◽  
Water Quality Assessment ◽  
Organic Pollution ◽  
Index Method ◽  
Water Pollution Index ◽  
The Republic ◽  
Basin Area

The Borska Reka river (47 km long, 373 km2 of basin area) is located in eastern Serbia and it is the biggest tributary of the river Veliki Timok. It is also one of the most polluted watercourses in Serbia. Using the data of the Republic Hydrometeorological Service of Serbia, the paper analyzes water pollution using the combined physical-chemical WPI index (water pollution index) over two periods: 1993-1996 and 2006-2009. The analysis of parameters showed significantly increased values of heavy metals (especially iron and manganese) which are indicators of inorganic pollution (primarily because of mining), but also increased values of organic pollution indicators (Biological Oxygen Demand-BOD5, ammonium, coliform germs), as the result of uncontrolled domestic wastewater discharge.

scholarly journals Water Quality Assessment along With Pollution Sources of the Halda River

2017 ◽  
Vol 43 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Md Shafiqul Islam ◽  
Ali Akbar ◽  
Aysha Akhtar ◽  
Md Manzoorul Kibria ◽  
Md Simul Bhuyan
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Preventive Measures ◽  
Pollution Index ◽  
Water Quality Assessment ◽  
River Pollution ◽  
Total Alkalinity ◽  
Sewage Contamination ◽  
Conservation Of Natural Resources ◽  
Management And Conservation

In the present study water quality assessment and land based sources of pollutants discharged into the Halda River through four major canals were investigated. The ranges of pH, DO, BOD, NO3-N, PO4-P, chloride and total alkalinity of the collected samples varied from 7.1-8.8, 3.35-4.70 mg/L, 0.055-5.0 mg/L, 0.12-3.1 mg/L, 0.06-0.16 mg/L, 8.4-69.30 mg/L and 73-220 mg/L, respectively. pH, DO, BOD showed significant changes at Mondakini Canal and Chengkhali Canal for monsoon, post-monsoon and winter (p <0.05) while chloride at Chengkali Canal for all seasons (p≤0.05). Moreover, TA, NO3-N and PO4-P exhibited significant variation in the concentration at Mondakini Canal, Madari Canal and Chengkali Canal for three seasons (p ≤0.05). River Pollution Index indicated that the water of river at Mondakini Canal, Madari Canal, Chengkhali Canal and Khondakia Canal varied from low to moderate pollution. According to the interviewers, the Halda River is being polluted due to industrial waste (53%), sewage contamination (20%), tobacco farming (13%), rubber dam (8%) and sand extraction (6%). Therefore, necessary preventive measures should be taken in order to control the unwise and unauthorized discharge of harmful pollutants into the Halda River for the better management and conservation of natural resources. Asiat. Soc. Bangladesh, Sci. 43(1): 61-70, June 2017

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.

scholarly journals Water Pollution and Water Quality Assessment On Sungai Batang Melaka River

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Ridzwan Zakariah ◽  
Norzila Othman ◽  
Mohd Azlan Mohd Yusoff ◽  
Wahid Altowayti
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Quality Assessment ◽  
Water Quality Assessment

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.

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