scholarly journals Wastewater reuse: potential for expanding Iran's water supply to survive from absolute scarcity in future

2015 ◽  
Vol 6 (3) ◽  
pp. 437-444 ◽  
Author(s):  
Ali Charkhestani ◽  
Moslem Salehi Ziri ◽  
Hasan Amini Rad
Keyword(s):  
Water Supply ◽  
Arid Regions ◽  
Wastewater Reuse ◽  
Present Situation ◽  
Wastewater Management ◽  
Master Plan ◽  
Effluent Quality ◽  
The World ◽  
Structured Planning ◽  
Oriented Approach

Iran, like many parts of the world, suffers from water scarcity and is located in one of the most arid regions. This is not only due to the low rates of precipitation received, but also due to the increase in demand on water resources for municipal, agricultural, and industrial uses. Wastewater reuse has proven to be effective and successful in creating a new and reliable water supply. Also, it can meet environmental needs, sustainable development, and a viable economy. There are two strategies for reuse implementation: (1) a future oriented approach allows structured planning within a broader wastewater management master plan and gives the greatest flexibility for reuse; (2) the available effluent quality from existing treatment plants defines the possible reuse option. According to the present situation in Iran, the second strategy is more reliable in preserving the country from absolute scarcity in future. Thus, the objective of this article is to understand the hidden comprehensive potential of reuse in three major categories: agricultural, industrial, and municipal uses, according to the improvement in the Falkenmark indicator.

COVID-19 PANDEMIC AND ITS IMPACT ON DYNAMICS OF BUSINESS AND ECONOMICS, WITH RESPECT TO INDIA

2020 ◽  
pp. 20-24
Author(s):  
Arun Kumar L.S
Keyword(s):  
Migrant Workers ◽  
World Trade ◽  
Present Situation ◽  
World Trade Organisation ◽  
Economic Activities ◽  
Monetary Policies ◽  
Goods And Services ◽  
The Great Depression ◽  
The World ◽  
Present Context

International business is essential for the countries to generate Economic growth or to increase in exports and reduce in imports, it encompasses all commercial and economic activities between the nations to promote the ideas, resources, transfer the goods and services, technologies across the national borders. In every country has limited resources therefore a country cannot produce all the goods and services that it requires. The present context of the world, there is imbalance in production and supply factors due to Covid-19 pandemic, which has resulted in market imbalances (demand and supply). The world economy has been hit hard by the ongoing Covid-19 pandemic, as on June end more than ten 10 million people around the globe had been affected by this pandemic, India, USA and others are worst hit countries with decrease in GDP (Gross Domestic Product) and increase in unemployment rate. It may be useful to also note that prolonged lockdowns will eventually imply production shortfalls, may lead to increase in unemployment; decrease in demand for products, slowly running out stocks. In recent forecast of World Trade Organisation (WTO) indicated a clear fall in world trade between 13 per cent and 32 per cent in 2020, perhaps the highest fall since the Great Depression of 1930s. India and world can overcome the challenges by specific government fiscal and monetary policies, by providing economic relief packages and increase in employment opportunities by digitalisation in all the sectors of the economy to increase in accountability, convenience, and gross production, and investment, job security to casual labours or migrant workers. These factors may change the world present situation to productive or welfare economy. The purpose of the research paper is to explain Economic and Business crisis, due to covid-19 in present situation in India and the world. KEY WORDS: C0VID-19, GDP, ECONOMY and GLOBAL CRISIS.

Innovative education and training for community-based water protection units

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
Frederick Kakembo
Keyword(s):  
Wastewater Reuse ◽  
Education And Training ◽  
Economic Incentives ◽  
Community Action ◽  
Health Improvement ◽  
Wastewater Management ◽  
Water Protection ◽  
Community Based ◽  
And Training ◽  
Innovative Education

The paper explores the centrality of community-based education and training in addressing constraints and opportunities for wastewater management in Uganda. To be sustainable, wastewater management need to be conceived in terms of socio-economic incentives, community action, group pressure and social capital. It is assumed that communities could be motivated to undertake sustainable wastewater disposal activities if concrete benefits are demonstrated. The benefits include among others; reducing expenditure on health; improvement of the fisheries sector and the use of wastewater for crop farming. The paper is based on a study that analyzed the role of socio-economic incentives and Public-Private-Partnership (PPP) in sustainable management of wastewater. Data was collected through personal interviews, documents analysis and review of recent studies on wastewater reuse in Uganda. Focus was put on districts of Mukono, Buikwe and Kayunga in central Uganda. Findings reveal that in line with the Hydro-Social-Health cycle, physical, social, political, economic, and cultural factors converge to influence wastewater management. The paper duly describes innovative education and training approaches based on Communal Water Protection Units (COWAPU) facilitated by multidisciplinary Water Professionals and Educators (WAPE).It is concluded that it is possible to operate a complete sanitation system without subsidies.

Water Quality and Health

1991 ◽  
Vol 23 (1-3) ◽  
pp. 201-209 ◽  
Author(s):  
W. Kreisel
Keyword(s):  
Water Quality ◽  
Developing Countries ◽  
Drinking Water ◽  
Water Supply ◽  
Human Health ◽  
Pollution Control ◽  
Wastewater Reuse ◽  
Water Supplies ◽  
Minimum Quality Standards ◽  
Quality Guidelines

Water quality can affect human health in various ways: through breeding of vectors, presence of pathogenic protozoa, helminths, bacteria and viruses, or through inorganic and organic chemicals. While traditional concern has been with pathogens and gastro-intestinal diseases, chemical pollutants in drinking-water supplies have in many instances reached proportions which affect human health, especially in cases of chronic exposure. Treatment of drinking-water, often grossly inadequate in developing countries, is the last barrier of health protection, but control at source is more effective for pollution control. Several WHO programmes of the International Drinking-Water Supply and Sanitation Decade have stimulated awareness of the importance of water quality in public water supplies. Three main streams have been followed during the eighties: guidelines for drinking-water quality, guidelines for wastewater reuse and the monitoring of freshwater quality. Following massive investments in the community water supply sector to provide people with adequate quantities of drinking-water, it becomes more and more important to also guarantee minimum quality standards. This has been recognized by many water and health authorities in developing countries and, as a result, WHO cooperates with many of them in establishing water quality laboratories and pollution control programmes.

Research of Green Concrete

2012 ◽  
Vol 214 ◽  
pp. 353-357
Author(s):  
Shu Zhen Yang
Keyword(s):  
Building Material ◽  
Present Situation ◽  
Green Concrete ◽  
Existing Problems ◽  
The World

Concrete is the most widely used building material in the world, while with the large amount use of concrete, the pollution is becoming more and more serious. While green concrete can overcome ordinary concrete's shortcomings. This paper will introduce green concrete's features and analyze its prospect. What's more, according to the present situation of green concrete, points out some existing problems of green concrete, to these problems, put forward some suggestions to its development.

A Dialectical Approach to Search Engine Evaluation

Libri ◽  
2020 ◽  
Vol 70 (3) ◽  
pp. 227-237
Author(s):  
Mahdi Zeynali-Tazehkandi ◽  
Mohsen Nowkarizi
Keyword(s):  
Information Retrieval ◽  
Information Science ◽  
Library And Information Science ◽  
Related Literature ◽  
Philosophical Foundations ◽  
Dialectical Approach ◽  
Retrieval Systems ◽  
The World ◽  
Information Retrieval Systems ◽  
Oriented Approach

AbstractEvaluation of information retrieval systems is a fundamental topic in Library and Information Science. The aim of this paper is to connect the system-oriented and the user-oriented approaches to relevant philosophical schools. By reviewing the related literature, it was found that the evaluation of information retrieval systems is successful if it benefits from both system-oriented and user-oriented approaches (composite). The system-oriented approach is rooted in Parmenides’ philosophy of stability (immovable) which Plato accepts and attributes to the world of forms; the user-oriented approach is rooted in Heraclitus’ flux philosophy (motion) which Plato defers and attributes to the tangible world. Thus, using Plato’s theory is a comprehensive approach for recognizing the concept of relevance. The theoretical and philosophical foundations determine the type of research methods and techniques. Therefore, Plato’s dialectical method is an appropriate composite method for evaluating information retrieval systems.

scholarly journals Hydrogeological and Geochemical Characteristics of the Coastal Aquifer of Stromboli Volcanic Island (Italy)

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 417
Author(s):  
Paolo Madonia ◽  
Gloria Campilongo ◽  
Marianna Cangemi ◽  
Maria Luisa Carapezza ◽  
Salvatore Inguaggiato ◽  
...  
Keyword(s):  
Water Supply ◽  
Coastal Aquifer ◽  
Volcano Monitoring ◽  
Conductivity Measurements ◽  
Thin Lens ◽  
Supply Source ◽  
The World ◽  
Volcanic Islands ◽  
Monitoring Protocols ◽  
Potential Use

Although groundwater is a strategic source in volcanic islands, most hydrogeochemical research on this topic has been focused on volcanic activity monitoring, overlooking general hydrogeological aspects. The same applies to one of the most studied volcanoes in the world, Stromboli Island (Italy). Here, we provide a hydrogeological scheme of its coastal aquifer, retrieving inferences about its potential use as a water supply source and for optimizing monitoring protocols for volcanic surveillance. Starting from the hydrogeochemical literature background, we analyzed new data, acquired both for volcano monitoring purposes and during specific surveys. Among these, there were saturated hydraulic conductivity measurements of selected rock samples and precise determinations of water table elevations based on GNSS surveys of wells. We identified a ubiquitous thin lens of brackish water floating on seawater and composed of a variable mixing of marine and meteoric components; inlets of hydrothermal fluids to the aquifer are basically gases, mainly CO2. Based on its hydrogeochemical character, the coastal aquifer of Stromboli could be used as a water supply source after desalinization by reverse osmosis, while the wells located far from the seashore are the most interesting for volcano monitoring, because they are less disturbed by the shallow geochemical noise.

scholarly journals Optimal Implementation of Wastewater Reuse in Existing Sewerage Systems to Improve Resilience and Sustainability in Water Supply Systems

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2004
Author(s):  
Aakash Dev ◽  
Timo C. Dilly ◽  
Amin E. Bakhshipour ◽  
Ulrich Dittmer ◽  
S. Murty Bhallamudi
Keyword(s):  
Wastewater Treatment ◽  
Water Supply ◽  
Wastewater Reuse ◽  
Treated Wastewater ◽  
Water Supply Systems ◽  
Test Cases ◽  
Decentralized Wastewater Treatment ◽  
Graywater Reuse ◽  
The Cost ◽  
Supply Systems

A transition from conventional centralized to hybrid decentralized systems has been increasingly advised recently due to their capability to enhance the resilience and sustainability of urban water supply systems. Reusing treated wastewater for non-potable purposes is a promising opportunity toward the aforementioned resolutions. In this study, we present two optimization models for integrating reusing systems into existing sewerage systems to bridge the supply–demand gap in an existing water supply system. In Model-1, the supply–demand gap is bridged by introducing on-site graywater treatment and reuse, and in Model-2, the gap is bridged by decentralized wastewater treatment and reuse. The applicability of the proposed models is evaluated using two test cases: one a proof-of-concept hypothetical network and the other a near realistic network based on the sewerage network in Chennai, India. The results show that the proposed models outperform the existing approaches by achieving more than a 20% reduction in the cost of procuring water and more than a 36% reduction in the demand for freshwater through the implementation of local on-site graywater reuse for both test cases. These numbers are about 12% and 34% respectively for the implementation of decentralized wastewater treatment and reuse.

Source to Tap Risk Assessment for Intermittent Water Supply Systems in Arid Regions: An Integrated FTA—Fuzzy FMEA Methodology

2021 ◽  
Author(s):  
Husnain Haider ◽  
Mohammed Hammed Alkhowaiter ◽  
M. D. Shafiquzzaman ◽  
Mohammad Alresheedi ◽  
Saleem S. AlSaleem ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Water Supply ◽  
Arid Regions ◽  
Water Supply Systems ◽  
Intermittent Water Supply ◽  
Fuzzy Fmea ◽  
Supply Systems

scholarly journals Wastewater Treatment and Water Reuse in Spain. Current Situation and Perspectives

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1551 ◽  
Author(s):  
Antonio Jodar-Abellan ◽  
María Inmaculada López-Ortiz ◽  
Joaquín Melgarejo-Moreno
Keyword(s):  
Water Quality ◽  
European Union ◽  
Wastewater Treatment ◽  
Water Reuse ◽  
Wastewater Reuse ◽  
The European Union ◽  
Water Planning ◽  
Structural Problem ◽  
The World ◽  
Access To Water

The issues of wastewater treatment and the reuse of water are of great importance, especially in areas where the shortage of conventional resources is a structural problem, as it is in the case of Spain. Wastewater reuse is a valid mechanism to avoid problems derived from droughts and water scarcity. It allows access to water resources in areas with water restrictions and to prevent futures scenarios, due to it being expected that water consumption will double by 2050 over the world. Thus, the likelihood that this unconventional, strategic resource would become scarce is unquestionable, particularly in cases where water planning and exploitation systems prioritize the preservation, protection, and improvement of water quality, as well as the sustainable and efficient use of natural resources. This paper shows how wastewater treatment and reuse are linked, as the reuse of wastewater is associated with a previous regeneration, and both of them are essential tools for maximizing environmental outcomes, as called for in the European Union Directives.

Industrial Wastewater Treatment and Reuse in a Developing Country Context: Evidence at the Firm Level from Ecuador

2018 ◽  
Vol 04 (02) ◽  
pp. 1750005 ◽  
Author(s):  
Oscar Zapata
Keyword(s):  
Wastewater Treatment ◽  
Production Process ◽  
Developing Country ◽  
Industrial Wastewater ◽  
Public Perception ◽  
Wastewater Reuse ◽  
Industrial Sector ◽  
Wastewater Management ◽  
Firm Level ◽  
Local Conditions

Wastewater reuse constitutes an alternative supply source of water. It not only increases the amount of water available but also reduces water pollution. The benefits and costs of this practice, and the public perception of reuse are the focus of several studies. However, the evidence on industrial wastewater reuse at the firm level remains scant. This paper is aimed at filling this gap by presenting evidence on the determinants of both wastewater treatment and reuse practices in a developing country context. I use firm level data from the Survey on Firms’ Environmental Practices of Ecuador. My results show that wastewater management in general, and reuse in particular, are still limited practices in the industrial sector of the country. My results suggest that firm’s decisions to treat and reuse depends on long-term firm’s characteristics, such as annual investment, the nature of the production process and local conditions, as well as the scale of production and water consumption. Volumes of wastewater treated and reused depend positively on the amount of water used in the production process and the firm’s annual level of investment or expenditure. The cost of the practice only affects the volume treated. The results suggest that targeting water-intensive industry sectors and the costs of wastewater treatment can play an important role for a more sustainable use of water in the industrial sector of Ecuador.

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