scholarly journals Assessment Of Water Quality And Bottom Supplies In The Bottom Of The Mekong River

Author(s):  
Glazunova Irina Viktorovna Et al.

The article presents the results of studies of the content of heavy metals in bottom sediments in the lower reaches of the Mekong River (3 estuaries in Ben Tre). The results of the content of heavy metals for 20 research sites were analyzed and compared with the national standards of Vietnam, which are used to assess the level of adverse effects on aquatic animals and river ecosystems, as well as with similar standards adopted in various countries of the world. When compared with the standards, the content of heavy metals in the study area (Ben Tre province) was quite high. The tributaries flowing into the main river also have a relatively high content of heavy metals, which proves that, in addition to pollution from the upper reaches of the river, socio-economic activities in the catchment, including land reclamation, also have a strong effect on the accumulation of heavy metals in channel sediments. In addition, the authors, comparing the content of heavy metals, both with the established standards of Vietnam and with the standards of some countries of the world, creating a basis for rational agriculture and sustainable development.

Author(s):  
N. S. Loboda ◽  
О. V. Smalii ◽  
І. V. Katynska ◽  
О. M. Kotovich

The relevance of the problem consists in the need to achieve a "good status" of water in the rivers of Ukraine according to the objectives of the Water Framework Directive. The aim of the work is to identify the main trends of water quality changes over time and along the length of Siverskyi Donets River based on data of the hydrochemical observations for the period from 1985 to 2015 inclusive. To establish the water quality we used integral assessments based on hydrochemical indicators such as pollution coefficient, water pollution index, generalized index of water state in accordance with the water quality standards for fishery. The article shows that use of mandatory (priority) chemical indicators in the calculations of the pollution coefficient and the water pollution index does not reflect a real degree of water pollution, since it does not take into account a significant amount of pollutants. It was discovered that major pollutants in the main river include suspended substances, chromium, nitrite nitrogen, phenols, sulfates. For the right-bank tributaries of Siversky Donets (illustrated by the example of the Kryvyi Torets River) originating from Donetsk Upland heavy metals (chromium, copper, zinc) pollution is typical. The degree of pollution based on the coefficient of pollution for average multi-year period is deemed as catastrophic, and based on the index of water pollution it is labelled with IV (contaminated) and V (very contaminated) quality classes indicating a violation of the ecosystem stability. Based on the generalized index, the water is also classified as "contaminated". The calculations based on various integral indicators of water quality revealed that pollution of the Siversky Donets River increases downstream. This is due to growing anthropogenic impact (municipal and industrial waters of large cities, discharge of mine and open pit waters into surface waterways, withdrawal of the runoff for its redirection to canals and water conduits, presence of diffuse sources of pollution by biogenic and organic substances). The beginning of the 21st century saw a trend towards improvement established in the chronological course of integral indicators of water quality which was associated with decrease production volumes. According to the generalized index of water state the water quality of the main river gradually changes from “contaminated” and “very contaminated” to “moderately contaminated”, but contamination by heavy metals, biogenic and organic substances remains high.


2020 ◽  
Vol 13 (25) ◽  
Author(s):  
Dragana Milenković ◽  
Tanja Vujović

The process of globalization is a logical process of internationalization, caused by deregulation and liberalization, as well as the development of information and communication technologies. To perform an isolationist policy today is completely absurd. Therefore, the main goal of each national economy is to be engaged in international trade while retaining sovereignty and achieving sustainable development, and this is only possible if we realize that not all economic activities are qualitatively the same as the drivers of economic development, and that globalization and free trade can create an automatic economic harmony. Countries that specialize in the export of raw materials will sooner or later experience the opposite effect from economies of scale, namely declining yields. Sustainable development today is a kind of monopoly on the production of advanced goods and services, in which rich countries experience one explosion of productivity for another. In the first part of the paper, we analyze the effects that abstract theories of classical liberal economies have on the poor countries, as well as the neoliberal policies that the World Bank, the International Monetary Fund and the World Trade Organization today apply to developing countries. In the second part of the paper, we analyze examples of countries whose economic prosperity is the result of a smart and pragmatic mix of market incentives and governance. In the third part of the paper we give recommendations for the new development and trade policy of Serbia. In the last part of the paper, we point to the importance of branding as a factor in the export competitiveness of the company.


2020 ◽  
Vol 9 (4) ◽  
pp. 181
Author(s):  
Andrejs Vilks ◽  
Aldona Kipāne

The socio-economic processes in the world and in Europe are highly dynamic and are aimed at a sustainable development of society. The sustainable and balanced development of society determines the need for the development of coherent and objectively justified elements of the legal system, including the creation of a new legal framework, the permanent reform of law enforcement authorities, and the use of national and international legal practices in socio-economic activities. At present the sustainable development of society is affected by a new socially unfavourable phenomenon COVID-19  that has a global impact on all regions of the world and almost all spheres of life. International organizations and national institutions must be responsible, courageous and determined in tackling the challenges of the crisis and in building a new generation. The global crisis can be a unique opportunity not only to successfully overcome its consequences, but also to ensure a transition to a fair, climate-neutral and digital sustainable Europe. In this context innovative thinking, successful use of modern technologies, transition to new models of social, economic, political and legal governance are needed. In general, this will contribute to the development of the sustainable society based on a full legal framework. Research aim: to identify the current state of the sustainable development of society, including the impact of COVID-19, by modelling the potential development of it, in accordance with the perspective of transnational socio-economic development. Research methods: study of legal literature and literary sources, the Internet resources, method of modelling, as well as descriptive and analytical methods.  Keywords:  COVID-19, sustainable development, crisis, society, the legal framework


Author(s):  
Bin Liang ◽  
Guilin Han ◽  
Jie Zeng ◽  
Rui Qu ◽  
Man Liu ◽  
...  

Dissolved heavy metals are not only the essential micronutrients, but also the toxic elements for human bodies. To investigate the heavy metal sources and assess the water quality of the Lancangjiang River, dissolved Cr, Ni, Cu, Zn, Mo, and Pb were detected in this study. The results show that dissolved Ni and Mo, Cr and Pb, and Cu and Zn were similarly distributed within the drainage basin. The correlation analysis exhibited that dissolved Ni and Mo had correlation with water parameter, and dissolved Cu was weakly correlated with Ni, indicating that they might be affected by natural processes. The principal component analysis explained 68.342% of the total variance for three principal components, of which dissolved Ni, Mo, and Cu were controlled by natural inputs; dissolved Cu and Cr were affected by anthropogenic activities; and dissolved Zn was influenced by agricultural activities in the downstream. The water quality showed that the water in upstream was worse than in midstream and downstream, and the whole drainage basin had water of excellent quality. Water within the drainage basin poses no risks to human bodies via daily diets and dermal routes. Dissolved Zn, Cu, and Mo occupied the major proportion of heavy metals transporting into the Mekong River. The agricultural inputs of dissolved Zn might pose potential risks to the Mekong River.


2015 ◽  
Vol 7 (2) ◽  
pp. 133-136
Author(s):  
R Afrin ◽  
MY Mia ◽  
S Akter

The study was conducted to assess the concentration level of heavy metals in water of the Turag river during the months from January to March, 2014. The level of Pb, Cd, Cr, Cu, Hg and Fe ranged from 0.002-0.005 ppm, BDL (Below Detection Level)-0.03 ppm, 0.007-0.024 ppm, 0.03-0.15 ppm, BDL (Below Detection Level)-0.00024 and 0.78-6.33 ppm, respectively. The concentration level of heavy metals in water did not exceed the permissible limit except Fe. This result was obtained because of river water is always flowing and metals cannot be accumulated in flowing water. For this reason a little amount of analyzed heavy metals were traced in water samples. But heavy metals have toxic properties, leading to adverse effects on human and ecosystem health even in small doses. So, the Turag river water is not safe for using different purposes and steps should be undertaken to improve the water quality of the river.DOI: http://dx.doi.org/10.3329/jesnr.v7i2.22221 J. Environ. Sci. & Natural Resources, 7(2): 133-136 2014


Water Policy ◽  
2021 ◽  
Author(s):  
Jim Taylor ◽  
Mark Graham ◽  
Adrienne Louw ◽  
Ayanda Lepheana ◽  
Bonani Madikizela ◽  
...  

Abstract The United Nations Sustainable Development Goals (SDGs) describe a course of action to address poverty, protect the planet and ensure prosperity for all (https://sdgs.un.org/goals). More specifically, SDG 6 clarifies how water quality, quantity and access are crucial to human well-being, and yet human activities are compromising water resources through over-exploitation, pollution, as well as contributing to the spread of disease. Globally aquatic ecosystems are highly threatened and concerted efforts by governments and civil society to ‘turn the situation around’ are simply not working. Human-created problems require human-centred solutions and these require different ways of thinking and acting to those behaviour patterns that are contributing to the challenges. In this paper, we first consider causal approaches to attitude change and behaviour modification that are simply not working as intended. We then explore enabling responses such as citizen science and co-engaged action learning as more tenable alternatives. SDG 6 has a focus on clean water and sanitation for all. The SDGs further clarify how the extent to which this goal can be realized depends, to a large extent, on stakeholder engagements and education. Through stakeholder engagements and educational processes, people can contribute towards SDG 6 and the specific indicator and target in SDG 6.b – Stakeholder participation. Following a three-year research process, that investigated a wide range of participatory tools, this paper explores how the Stream Assessment Scoring System (miniSASS; www.minisass.org) can enable members of the public to engage in water quality monitoring at a local level. The paper continues to demonstrate how miniSASS can contribute to the monitoring of progress towards Sustainable Development Goal 6.3.2., as a Level Two indicator. miniSASS is proving popular in southern Africa as a methodology for engaging stakeholder participation in water quality monitoring and management. The technique costs very little to implement and can be applied by children and scientists alike. As a biomonitoring approach, it is based on families of macroinvertebrates that are present in most perennial rivers of the world. The paper concludes by describing how useful the miniSASS technique can be for addressing SDG 6.3.2 and that it can be applied in most regions of the world.


2021 ◽  
Vol 280 ◽  
pp. 02003
Author(s):  
Vitalina Babenko ◽  
Larysa Zomchak ◽  
Maryna Nehrey

The need for sustainable development of Ukrainian regions is due to the global threat of environmental degradation, the unstable situation in the world economy, low socio-economic indicators of the country and weak innovation activity. An important factor that has an influence on the economic development of regions is the ecological state of the environment. It plays one of the most important roles in the conducting of economic activities that require the use of natural resources. According to the results of the investigation, four clusters were formed. Cluster analysis made it possible to conduct a general assessment of the state of the regions of Ukraine, to form groups by similarity and to draw sound conclusions about the existence of similarities in the economy. The formation of clusters and the development of sustainable development policies for individual clusters, which should have significant differences, taking into account their specifics, will contribute to the more effective achievement of sustainable development goals.


2014 ◽  
Vol 962-965 ◽  
pp. 2072-2075
Author(s):  
Yi Liu ◽  
Qun Xu

Currently, the environmental situation of earth is worse and worse, and the living environment of human beings is threatened seriously. People all over the world pay more attention on the environmental protection and sustainable development. Audit institutions, because of their unique professional advantages, can play a very important role in environmental protection. Thus, Environmental performance audit is developing gradually acting as a sustained and effective managerial instrument to inspect and supervise the environmental economic activities.


2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Kofi Adu-Boahen ◽  
Isaac. Boateng ◽  
Ishmael. Yaw. Dadson ◽  
Laud. Alfred. Dei ◽  
Kwabena. Barima. Antwi. ◽  
...  

Incessant monitoring of water is essential in terms of heavy metals and toxic substances as it provides detailed information on aquatic resources. Majority of lagoons receive freshwater from their catchment areas containing industrial and domestic waste. The paper analysed seasonal variations in the distribution and concentrations of Lead (Pb), Copper (Cu), Cadmium (Cd), and Manganese (Mn) in the Fosu lagoon in Ghana to ascertain the quality of the lagoon. Water was sampled from eighteen (18) different points on the lagoon and was analysed at the Water Research Institute (WRI) of the Center for Scientific and Industrial Research (CSIR) using Atomic Absorption Spectrometry (AAS) and the results were interpolated using kriging. The results obtained were compared with the World Health Organisation water quality index. Statistical analysis of heavy metal concentrations using Pearson’s two-tailed significance correlation showed positive correlations for both seasons; between Pb and Cu (0.297; sig. = 0.232, and 0.196; sig. = 0.436), and Cd and Mn (0.119; sig. = 0.643 and 0.191; sig. = 0.447) for the wet and dry seasons respectively. A paired sample t-test on concentrations also showed statistical differences between wet and dry seasons’ concentrations for Pb (t = 1.324; sig. = 0.203), Cu (t = 2.759; sig. = 0.013), and Cd (t = 3.056; sig. = 0.007), and Mn (t = -4.014; sig. = 0.001).  Pb and Cd showed higher concentrations above the World Health Organisation's permissible limits. Heavy metal concentrations of water samples analysed varied widely in terms of seasons and sampling points.


Author(s):  
Melanie SARANTOU ◽  
Satu MIETTINEN

This paper addresses the fields of social and service design in development contexts, practice-based and constructive design research. A framework for social design for services will be explored through the survey of existing literature, specifically by drawing on eight doctoral theses that were produced by the World Design research group. The work of World Design researcher-designers was guided by a strong ethos of social and service design for development in marginalised communities. The paper also draws on a case study in Namibia and South Africa titled ‘My Dream World’. This case study presents a good example of how the social design for services framework functions in practice during experimentation and research in the field. The social design for services framework transfers the World Design group’s research results into practical action, providing a tool for the facilitation of design and research processes for sustainable development in marginal contexts.


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