Clean Technologies and Environmental Policy (2018) 20:909–910 https://doi.org/10.1007/s10098-018-1554-y EDITORIAL Significance of co‑digestion as energy recovery at a sewage treatment plant amenable to a shrinking population Akihiko Terada Published online: 4 June 2018 © Springer-Verlag GmbH Germany, part of Springer Nature 2018 The world population has been inevitably increasing. The potentially makes physical and biological units in the facility excessive population growth is a big wake-up call for overloaded. In order to permanently comply with stringent researches on food science, environmental science/engineering effluent standard, a main challenge is retrofitting a biologi - and sustainability. We are required to bear a mission to make cal unit to improve removal performances of carbon, nitro- our planet sustainable. That being said, there are countries, gen and phosphorus without extending the area of biological however, where the populations are decreasing. According to units. Given the significance of cost reduction and energy/ the investigation by World Population Prospects: The 2017 resource recovery as an emergent issue, of importance is Revision (United Nations 2017), there are 51 countries where development and implementation of novel biological pro- the populations will decrease from 2017 to 2050. One of the cesses, e.g., anaerobic ammonium oxidation as cost-effective countries facing shrinking population is Japan. It had the high-
Clean Technologies and Environmental Policy – Springer Journals
Published: Jun 4, 2018
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