Drivers and characteristics of wastewater agriculture in developing countries: results from a global assessment PDF Download

Author: Raschid-Sally, L., Jayakody, P.
Publisher: IWMI
ISBN: 9290906987
Category : Sewage irrigation
Languages : en
Pages : 39

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Book Description
In 4 out of 5 cities in developing countries, wastewater is used to cultivate perishable crops for urban markets. Such practices create a health risk but provide important livelihood benefits. This study through an analysis of 53 cities in developing countries, contributes to understanding the factors that drive wastewater use. The main drivers are (1) increasing urban water demand without wastewater treatment causing pollution of irrigation water sources; (2) urban food demand favoring agriculture close to cities where water sources are polluted; and (3) lack of cheaper, similarly reliable or safer water sources. Poverty, which constrains the infrastructure needs of urbanization, is an added factor. The study makes policy recommendations stressing on, effectively applying the WHO guidelines, linking investments in water supply with sanitation for maximum beneficial impact on water pollution, and involving actors at both the national and local level, for water quality improvements and health risk reduction

Author: J.C. Dagar
Publisher: Springer
ISBN: 8132227700
Category : Technology & Engineering
Languages : en
Pages : 519

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Book Description
The land degradation due to salinity and waterlogging is a global phenomenon, afflicting about one billion hectares within the sovereign borders of at least 75 countries. Besides staring at the food security, it has far reaching and unacceptable socio-economic consequences since a large proportion of this land is inhabited by smallholder farmers. The anthropogenic-environmental changes and the climate change are further adding to the problem of salinity and waterlogging. The phenomenon of sea-level rise will bring more areas under waterlogged salinity due to inundation by sea water. Thus, dealing with the salinity in reality is becoming a highly onerous task owing to its complex nature, uncertainty and differential temporal and spatial impacts. Nevertheless, with the need to provide more food, feed, fuel, fodder and fiber to the expanding population, and non-availability of new productive land, there is a need for productivity enhancement of these lands. In fact, the salt-affected and waterlogged lands cannot be neglected since huge investments have been made throughout the world in the development of irrigation and drainage infrastructure. The social, economic and environmental costs being high for theon-and/off-farm reclamation techniques, saline agriculture including agroforestry inculcated with modern innovative techniques, is now emerging as a potential tool not only for arresting salinity and waterlogging but for other environmental services like mitigate climate change, sequester carbon and biodiversity restoration. This publication attempts to address a wide range of issues, principles and practices related to the salinity involved in rehabilitation of waterlogged saline soils and judicious use of saline waters including sea water. Many of the site specific case studies typical to the saline environment including coastal ecologies sustaining productivity, rendering environmental services, conserving biodiversity and mitigating climate change have been described in detail. Written by leading researchers and experts of their own fields, the book is a must, not only for salinity experts but also for policy makers, environmentalists, students and educationists alike. More importantly, it contributes to reversing the salinity trends and teaches to sustain with salinity ensuring the livelihood of resource-poor farming families leaving in harsh ecologies including coastal areas which are more vulnerable to climate change.

Author: Pay Drechsel
Publisher: IWMI
ISBN: 1844077969
Category : Business & Economics
Languages : en
Pages : 434

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Book Description
First Published in 2009. Routledge is an imprint of Taylor & Francis, an informa company.

Author: Pay Drechsel
Publisher: Springer
ISBN: 9401795452
Category : Technology & Engineering
Languages : en
Pages : 287

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Book Description
The books provides a timely analysis in support of a paradigm shift in the field of wastewater management, from ‘treatment for disposal’ to ‘treatment for reuse’ by offering a variety of value propositions for water, nutrient and energy recovery which can support cost savings, cost recovery, and profits, in a sector that traditionally relies on public funding. The book provides new insights into the economics of wastewater use, applicable to developed and developing countries striving to transform wastewater from an unpleasant liability to a valuable asset and recasting urbanization from a daunting challenge into a resource recovery opportunity. “It requires business thinking to transform septage and sewage into valuable products. A must read for water scholars, policy makers, practitioners, and entrepreneurs". Guy Hutton, Senior Economist, Water and Sanitation Program, Water Global Practice, World Bank “This book provides compelling evidence and real solutions for the new ‘resource from waste’ approach that is transforming sanitation, boosting livelihoods, and strengthening urban resilience”. Christopher Scott, Professor and Distinguished Scholar, University of Arizona “This book shows how innovative business thinking and partnerships around resource recovery and reuse fit well within an inclusive green economy and climate change adaptation and mitigation strategies”. Akiça Bahri, Coordinator of the African Water Facility, Tunisia, and award-winning researcher

Author: Michael D. Underhill
Publisher: John Wiley & Sons
ISBN: 0470604018
Category : Business & Economics
Languages : en
Pages : 248

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Book Description
A comprehensive overview of cutting edge infrastructure investment topics from sector experts Infrastructure investing is one of the fastest growing and most complex asset classes facing investment professionals, practitioners, and academics. The Handbook of Infrastructure Investing examines this dynamic discipline by featuring contributions from numerous investment experts in each sector. Salient topics include timelines for domestic and international infrastructure investing; progression of strategies and present day trends; challenges of successful infrastructure programs with labor unions; events in history that have ushered in new reforms; and much more. Unearths some of the biggest investment opportunities available and addresses how to make money, while meeting other portfolio investment objectives: environmental, socially conscious, and governance principles, pro-labor investing and other collateral investment objectives Offers insights from some of the best minds in the business Covers the resurgence in transportation, the types of deals associated with it, and how transportation finance has changed Contains commentary from public pension funds, endowments, foundations, and family office investment professionals Provides an overview of the traditional and alternative energy sector and the abundant investment opportunities within it As infrastructure investing continues to grow, you'll need to enhance your understanding of this field. The Handbook of Infrastructure Investing will get you up to speed on all the issues associated with it, and provide a dynamic working guide to building an infrastructure investment program.

Author: Fayyaz Ali Memon
Publisher: IWA Publishing
ISBN: 1780405502
Category : Science
Languages : en
Pages : 496

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Book Description
Owing to climate change related uncertainties and anticipated population growth, different parts of the developing and the developed world (particularly urban areas) are experiencing water shortages or flooding and security of fit-for-purpose supplies is becoming a major issue. The emphasis on decentralized alternative water supply systems has increased considerably. Most of the information on such systems is either scattered or focuses on large scale reuse with little consideration given to decentralized small to medium scale systems. Alternative Water Supply Systems brings together recent research into the available and innovative options and additionally shares experiences from a wide range of contexts from both developed and developing countries. Alternative Water Supply Systems covers technical, social, financial and institutional aspects associated with decentralized alternative water supply systems. These include systems for greywater recycling, rainwater harvesting, recovery of water through condensation and sewer mining. A number of case studies from the UK, the USA, Australia and the developing world are presented to discuss associated environmental and health implications. The book provides insights into a range of aspects associated with alternative water supply systems and an evidence base (through case studies) on potential water savings and trade-offs. The information organized in the book is aimed at facilitating wider uptake of context specific alternatives at a decentralized scale mainly in urban areas. This book is a key reference for postgraduate level students and researchers interested in environmental engineering, water resources management, urban planning and resource efficiency, water demand management, building service engineering and sustainable architecture. It provides practical insights for water professionals such as systems designers, operators, and decision makers responsible for planning and delivering sustainable water management in urban areas through the implementation of decentralized water recycling. Authors: Fayyaz Ali Memon, Centre for Water Systems, University of Exeter, UK and Sarah Ward, Centre for Water Systems, University of Exeter, UK

Author: Inamuddin
Publisher: John Wiley & Sons
ISBN: 1119904803
Category : Technology & Engineering
Languages : en
Pages : 564

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Book Description
HANDBOOK of WATER POLLUTION Handbook of Water Pollution discusses a wide range of contaminants heavily affecting our environment and water bodies. The chapters discuss heavy metals, metalloids, pesticides, explosives, toxic chemicals, dyes, plastics, e-wastes, fertilizers, detergents, nitrates/nitrites, phosphates, hydrocarbons, and fecal wastes, along with their sources of action against our environment, their methods of analysis, and finally, their treatments are all presented in detail. Our environment is heavily affected due to extreme human activities. Environmental pollution is a major concern worldwide. Within this, water pollution is one of the major challenges that puts the total ecology at risk. Water pollution is alarming everywhere; many governing authorities believe it is also an unavoidable result of human activity. However, the economic cost of water pollution far outweighs the benefits of skimping on its cause. Water pollution is not just merely related to financial cost but related to all living beings. Toxic waste is getting into the water bodies in various regions, causing many illnesses in humans and poisoning other living things. The destruction of any single component of our ecosystem can have a devastating effect on our biodiversity. Therefore, it is necessary to understand the causes of pollution, their nature and mechanism, and, at the same time, study the remedies. The major causes of water pollution are industrial waste, sewage, plastics, oil leakage, biological organisms, toxic chemicals and radioactive waste, and so on. A tremendous amount of research work is going on around the world to understand the causes, their mechanism, and solutions. Many new works are published every day, therefore it’s important to gather some of the most relevant findings in one place. This will serve as a link between collected knowledge and current advancements, while also facilitating future thinking.

Author: Tamim Younos
Publisher: Springer
ISBN: 3319293370
Category : Science
Languages : en
Pages : 332

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Book Description
This volume focuses on practical aspects of sustainable water management in urban areas and presents a discussion of key concepts, methodologies, and case studies of innovative and evolving technologies. Topics include: (1) challenges in urban water resiliency; (2) water and energy nexus; (3) integrated urban water management; and (4) water reuse options (black water, gray water, rainwater). This volume serves as a useful reference for students and researchers involved in holistic approaches to water management, and as a valuable guide to experts in governmental agencies as well as planners and engineers concerned with sustainable water management systems in urban environments.

Author: David Devlaeminck
Publisher: Springer
ISBN: 3319501615
Category : Science
Languages : en
Pages : 222

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Book Description
This volume collects essays from academics and practitioners from a diversity of areas and perspectives in order to discuss water security at various levels and to illuminate the central idea of water security: its focus on the individual. Beginning with the big picture, this book aims to illustrate the depth of the water security crisis and its interconnections with other aspects of societal development. It particularly draws a connection to the 2030 Agenda for Sustainable Development, and discusses that challenges faced in meeting the 17 sustainability development goals (SDG) by the year 2030. Moving from international to domestic and community perspectives, this book provides a unique analysis of issues and solutions to the water issues we face today in light of the ever looming global changes brought on by climate change. Over the past few decades the recognition of our common need for water has increased, as policymakers have sought to place more focus on the individual within policy. After the recognition of water and sanitation as a fundamental human right by the United Nations General Assembly in 2010, there is increasing recognition of the individual as the building block for the struggle for water security. This reality also intersects with adverse impacts of global climate change, and the book responds to the broader question: will clean and safe water be available where we need it and when we need it in the future?

Author:
Publisher: IWMI
ISBN: 9290907657
Category : Nature
Languages : en
Pages : 40

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Book Description
More than 1 million hectares of urban land in India could be irrigated for crops if wastewater was made safe for use. Lack of systematic data collection by municipalities makes it difficult to accurately assess the wastewater generation or estimate the total amount of urban area under wastewater irrigation, so the potential of urban and peri-urban farming could be even greater. This study attempted to analyze the current status of wastewater generation, its uses and livelihood benefits especially in agriculture, based on national data and case studies from Ahmedabad, New Delhi, Hyderabad, Kanpur and Kolkata.