Technological Solutions for Water Sustainability: Challenges and Prospects: Towards a Water-secure India
This book provides an overview of technical sustainable water management in the Global South, mainly in India, and is structured in five sections:
The current status and challenges for sustainable water management in India
New-age materials for water and wastewater treatment
New technologies for water and wastewater treatment
Sensors for water quality monitoring
Urban water management
Section 1 provides the latest information about the status and challenges for sustainable water management in India from the perspective of water quality, industrial and domestic wastewater treatment, urban water infrastructure and policy and governance towards water security. Section 2 discusses new framework solids for water purification, new materials for arsenic and fluoride removal, nanocomposites for water and wastewater treatment and removal of hazardous materials, and toxicity of these materials. Section 3 presents the new technologies developed for water and wastewater treatment; dealing with pulsed power technology, constructed wetlands, nutrient recovery, low-cost filters and pollution abatement using waste derived materials. Section 4 focuses on sensors, including the development of low-cost colorimetric sensors for eutrophying ions, sensors for conductivity and flow parameters, and multi-analyte assessment for water quality. Finally, Section 5 addresses the issues related to urban water infrastructure, sustainable urban drainage and integrated flood and water scarcity management.
This section also discusses virtual water.
The unique feature of this edited volume is its special perspective on emerging economies in the Global South, such as India. It provides information about adaption of technologies, development of new technologies, and management practices which are context driven and region specific. It also deals with economical and easy to use sensors for large-scale monitoring of water quality and water quantity parameters.
ISBN: 9781789063707 (paperback)
ISBN: 9781789063714 (eBook)
Chapter 26: Virtual water and policy implications
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Published:November 2023
S. Ragasri, Thalappil Pradeep, 2023. "Virtual water and policy implications", Technological Solutions for Water Sustainability: Challenges and Prospects: Towards a Water-secure India, Ligy Philip, Thalappil Pradeep, S. Murty Bhallamudi
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Management of water resources is vital for sustainable development. However, management of water resources can be wholesome only if the aspect of virtual water is also addressed. Virtual water is the water that is required for the production of commodities. With the rise in global trade volume, there is an increase in virtual water exchange. Therefore, water is indirectly becoming a traded commodity. Initially, it was predicted that global market forces would direct the virtual water flows from relatively wet to relatively dry regions. However, currently, water-poor countries like India are becoming the major net virtual water exporters and water-rich counties like the UK are becoming net virtual water importers. It has become important to find management methods for virtual water for water-stressed countries. Policy interventions can play a key role in such management. This chapter aims to address the concept of virtual water and presents the role of policy intervention in virtual water management. Case studies of countries with successful management of virtual water are presented and evaluated critically. Lastly, recommendations for efficient virtual water management will be presented for the Indian scenario.