Water Pollution and Bioremediation by Microalgae: Impacts of Microalgae on the Quality of Drinking Water

2007 ◽  
pp. 448-454
Author(s):  
Carl J. Soeder
Keyword(s):  
Water Pollution ◽  
Drinking Water

scholarly journals Assessment of the Sverdlovsk Oblast Drinking Water Pollution with Heavy Metal

2020 ◽  
Author(s):  
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Water Supply Systems ◽  
Industrial Enterprises ◽  
Quality Of Water ◽  
Supply Systems

The paper presents the results of the determination of heavy metals in drinking water samples from centralized water supply systems and wells of individual water supply of the Sverdlovsk region. It was found that the content of copper ions in the samples does not exceed its maximum permissible concentration, and the content of lead and cadmium ions in most samples is higher than the permissible norms. It is established that water samples from Nizhny Tagil and Serov are more contaminated with cadmium. The causes of drinking water pollution are discussed. It was found that the pollution of water from the centralized water supply systems with heavy metals is mainly due to the non-compliance of the operated water pipes with sanitary and hygienic requirements. Groundwater pollution is caused by the infiltration of industrial effluents containing heavy metals from storage and sedimentation tanks through soil. It is shown that numerous industrial enterprises in the Sverdlovsk region aggravate the process of pollution of surface and groundwater with heavy metals. The unsatisfactory quality of water in terms of the content of heavy metals in Sverdlovsk region is revealed. The authors dwell on the need to continue research to determine the content of other heavy metals in water and expand the geography of sampling in the region in order to assess more accurately the quality of water.

scholarly journals Modern Techniques in Data Analysis, with Application to the Water Pollution

2018 ◽  
Vol 72 (3) ◽  
pp. 184-192 ◽  
Author(s):  
Haroon M. Barakat ◽  
Osama Mohareb Khaled ◽  
N. Khalil Rakha
Keyword(s):  
Water Pollution ◽  
Drinking Water ◽  
Data Analysis ◽  
Normal Family ◽  
Distribution Theory ◽  
Data Sets ◽  
Practical Application ◽  
Asymmetry Parameters ◽  
Best Fit

Abstract This paper presents a comparison of most capable families of distributions for modelling asymmetry. Kum-normal, stable-symmetric normal family and two of the full families were chosen, where the quality of the fit, the flexibility and the amount of asymmetry parameters were factors used for comparison. The objective of this study was to generate data with increasing levels of asymmetry and to choose the best fit. The distributions were also compared in modelling two data sets of pollution of the drinking water in the El-Sharkia governorate in Egypt. Much of this paper is concerned with the distribution theory, exploring the properties of some new recent families of distributions and, where appropriate, extolling their virtues. Relatively, much of this paper is devoted to practical application.

APPLICABILITY OF WATER ζ - POTENTIAL AS ITS POLLUTION DENSITY CHARACTERISTICS

2017 ◽  
Vol 7 (3) ◽  
pp. 28-34
Author(s):  
Viktor I. KICHIGIN ◽  
Sergey N. SKOROKHODOV
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Cluster Analysis ◽  
Drinking Water ◽  
Zeta Potential ◽  
Ζ Potential ◽  
Advantages And Disadvantages ◽  
Key Indicator

The paper discusses advantages and disadvantages of existing methods for determining water quality. It proposes to use electro-kinetic capacity as a key indicator together with cluster analysis of obtained results. It is shown, that according to such indicators as pH, turbidity, alkalinity, general rigidity, content of ion Ca2+, Mg2+, the quality of drinking water in Samara is stable and consistent with existing standards. The research reveals some zeta-potential (ZP) dependence on water pollution density. It was shown that the link between zeta-potential and various kinds of contamination in drinking water is underexplored and requires further detailed study.

scholarly journals Tannery Wastewater affects the Drinking Water Quality and Heavy Metals in the Palar River Water Pollution in Vellore District Tamil Nadu

2021 ◽  
Vol 9 (4) ◽  
Author(s):  
A Xavier Susairaj
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Water Quality ◽  
Drinking Water ◽  
Tamil Nadu ◽  
Sampling Technique ◽  
Drinking Water Quality ◽  
Primary Data ◽  
The People

A large number of chemicals are used in the tanneries to convert the rawhide into finished leather. The chemicals used by the tanneries are ends in wastewater. This wastewater is dumped into nearby rivers and canals that create water pollution heavy metals in the water. The aim of this process is to access the chemicals used in the tannery industry post tanning process and to evaluate the drinking water quality of the wastewater released by the tanneries in the Palar river basin in Vellore district Tamil Nadu. To analyze the perception of the people in the study area affected by health due to wastewater from the tanneries. This study was performed as a cases study of the current drinking water sources used by households and how they perceive the quality of water. The second objective is to analyze the relationship between water quality and health hazards among households in the Vellore district. Primary data was collected from the respondents with the help of a questionnaire, total sample size of the respondent was 500, multistage random sampling technique was used to collect the data with the help of questioner method, the descriptive and statistical tools were used to analyse the data with SPSS and R statistical packages. The result shows that the people in the river basing suggested controlling the wastewater for the tanneries, and they demanded compensation from the tanneries. Finally, to suggest policy measures to control the water pollution in the study area.

scholarly journals ISSUES OF DRINKING WATER QUALITY IN THE WESTERN PART OF CRIMEA

2020 ◽  
Vol 25 (3) ◽  
pp. 50-62
Author(s):  
V. G. Kobechinskaya ◽  
◽  
O. B. Yarosh ◽  
A. V. Ivashov ◽  
V. L. Apostolov ◽  
...  
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Distribution Networks ◽  
Supply System ◽  
Water Supply System ◽  
Coliform Bacteria ◽  
Gis Technologies

Introduction. Until 2014, water supply in Sevastopol city and its municipal districts was combined due to its own surface and underground waters as well as a water conduit running from the Mezhgornoye reservoir located in the Saksky district and filled with the Dnieper waters of the North Crimean Canal. After 2014, this source was shut off. Therefore, it became important to conduct a comparative analysis of the quality of drinking water supplied to the settlements of this territorial entity. Purpose of the study: The study is aimed to assess the quality of drinking water and perform its analysis in Sevastopol city and nearby settlements, taking into account the increase in water intake from rivers and underground sources in recent years. Methods. Objects of the study are surface and underground water supply points, and drinking water for consumers. We used standard methods for the analysis of drinking water with an assessment of its physical, chemical and sanitary-bacteriological indicators using analysis of variance (AoV) methods. Water quality was assessed by the specific combinatorial index of water pollution. Using GIS technologies, maps were built to visualize a number of indicators: chemical oxygen consumption and data on the water pollution complexity coefficient at the stage when consumers receive water from the central water supply system (for all municipal districts). Results. It was established that sanitary and microbiological indicators of tap water quality — by the total microbial count, total coliform bacteria and thermo-tolerant coliform bacteria — immediately before being fed to the central water supply system in the Southern and Northern districts of Sevastopol, did not exceed sanitary standards. Due to the considerable length of the distribution networks and their high deterioration, secondary pollution of drinking water is currently taking place. In a number of municipal districts, it was revealed that the key indicators being assessed exceeded the norms of the State Sanitary Rules and Regulations. For the first time, with the help of GIS technologies in the ArcGis 10.4 software shell, specific ranks of drinking water pollution levels were distinguished for individual municipal districts, which made it possible to visualize the dynamic characteristics of polluting ingredients taking into account their territorial affiliation.

A Survey of Current Drinking Water Supply for Shanghai

2010 ◽  
Vol 113-116 ◽  
pp. 68-70
Author(s):  
Jia Xiu Song ◽  
Dong An ◽  
Bruce Anderson
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Water Source ◽  
Drinking Water Supply ◽  
Drinking Water Source ◽  
Pollution Problem ◽  
Huangpu River

Water quality has deteriorated in recent years in Shanghai, China. More species of hazardous organic contaminant have been discovered. In developed area such as Shanghai, water pollution is more and more severe. Water quality of rivers in Shanghai territory falls into category Ⅲ~IV, which does not meet drinking water source standard. Huangpu River, the mother river of shanghai native, which provides nearly 80% of the water supply for downtown Shanghai, is facing imminent severe water pollution problem.

Gender and Regional Differences in the Life Expectancy in Russia

2020 ◽  
Vol 27 (1) ◽  
pp. 106-120 ◽  
Author(s):  
L. A. Rodionova ◽  
E. D. Kopnova
Keyword(s):  
Drinking Water ◽  
Alcohol Consumption ◽  
Life Expectancy ◽  
Gender Gap ◽  
Poor Quality ◽  
Living Conditions ◽  
Regional Differentiation ◽  
Russian Regions ◽  
Poor Nutrition

The relevance of the chosen topic is closely related to the development of a system for monitoring the implementation of the May Presidential Decree (2018) to increase life expectancy and improve the quality of life of the population. It has been stated that despite the positive dynamics of life expectancy over the past decade, Russia still has a huge regional differentiation (16,6 years for women, 18,2 years for men in 2016) and an average gender gap - 10,6 years. The choice of factors affecting the gender gap in life expectancy in Russian regions is supported by a conclusion most common in foreign studies that climatic conditions, living conditions, the quality of food and drinking water, alcohol consumption are essential components of public health and life expectancy.The article provides an overview of studies on assessment factors of life expectancy, presents the authors’ approach to identifying gender gaps in life expectancy, living conditions, and lifestyle affecting the indicator of life expectancy. The paper presents the results of a comparative analysis of gender gap in life expectancy in Russia and foreign countries. The paper studies the correlation between living conditions and lifestyle, and life expectancy.Classification of the regions by the life expectancy at birth for men and women is an important component of this study. The authors used Rosstat data for 2016 and the k-means method to select three clusters of Russian regions taking into account gender, living conditions and lifestyle. The paper identifies similar health problems of the regions that are associated with alcohol consumption, poor nutrition and poor quality of drinking water, poor housing and living conditions. The lowest life expectancy rates for men and women are recorded in regions of the 1st cluster (Jewish Autonomous Region, Republic of Tuva, Chukotka Autonomous Area). High mortality rates are a result of external causes. There is a poor quality of drinking water and poor nutrition, excessive alcohol consumption, and inadequate housing conditions.Based on the obtained results were determined possible reserves for reducing the gender and regional differentiation of life expectancy.

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

Sign in / Sign up

Export Citation Format

Share Document