Strategies for Nutrient and Resource Management in Cities of the Future
- R. Latimer and W. O. Khunjar - Hazen and Sawyer
- S. Jeyanayagam - CH2MHILL
The current global population of around 7 billion is expected to exceed the 9 million mark by 2050. This, in combination with rapid population shift (approximately 68% of the people will be living in urban areas by 2050) has caused three of the nine planetary boundaries to be overstepped by human activity namely, climate change, rate of biodiversity loss, and nutrient cycles (Rockstrom, 2009). Efficient nutrient and resource (nutrients-energy-water) management is a necessary component of any sustainable decision paradigm that seeks to reverse these trends. While leading edge technologies are being developed for this purpose, it is necessary for the industry to introspectively assess successes and failures with a view to prioritizing resources for innovation. In this work, we review key features of the wastewater treatment plant (WWTP) of the future, discuss proven and emerging approaches, outline lessons learned using case studies and discuss practical barriers to advancing the water-energy-nutrient nexus and how they can be overcome.
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