Abstract

Climate change with the increase of greenhouse gases in the atmosphere is currently a grave issue and we are at a defining moment. Concomitantly wastewater has increased abundantly with the haphazard discharge of wastewater of ever-growing human population, which may lead to serious environmental and health hazards. Traditional wastewater treatment technologies have primarily focused on the treatment of wastewater rather than the recovery of value-added resources. A shift from a linear to a circular economy may offer a unique platform for recovering valuable resources including energy, nutrients, and high-value goods from wastewater. Thus, this chapter focuses on the avenues of resource recovery from wastewater, by evaluating the potential for nutrients, water, and energy recovery from different types of wastewater and sewage sludge. It discusses in detail a variety of available and advanced technologies for resource recovery. Further, the feasibility of these technologies from a sustainable standpoint is discussed, covering the technical, economic, and environmental aspects.

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