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 12: Pulsed power technology for water and wastewater treatment
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Published:November 2023
Jerin Jose, Raj Kamal Singh, Ligy Philip, 2023. "Pulsed power technology for water and wastewater treatment", Technological Solutions for Water Sustainability: Challenges and Prospects: Towards a Water-secure India, Ligy Philip, Thalappil Pradeep, S. Murty Bhallamudi
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The presence of recalcitrant and hazardous water pollutants poses a serious challenge to conventional water treatment technologies and is motivating the development of advanced treatment approaches like pulsed power technology (PPT). One application of PPT is to generate plasma that can be used for the efficient and rapid degradation of a wide range of emerging water pollutants, including dyes, pesticides, toxic solvents, and pharmaceuticals, and for the disinfection of water and wastewater. Plasma-based water treatment utilizes electrical discharge plasmas formed in contact with or in the vicinity of water to degrade chemicals within the contaminated water. Plasma in these conditions can produce a diverse range of highly reactive species, including strong oxidants (•OH) and reductants (eˉaq), which are suitable for the simultaneous oxidation and reduction of the organic compounds present in highly complex wastewater such as industrial effluents. PPT exhibits the advantages of fast pollutant degradation kinetics, relatively low energy input, and the absence of chemical additives, making it a promising alternative water treatment technology. The increasing demand for water treatment technologies for treating hazardous chemicals with no/minimal generation of secondary pollutants may accelerate the adoption of safe and energy-efficient technologies like PPT.