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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Extreme events, natural variability and climate change : Renewability assessment of water resources based on embodied water accounting of wastewater treatmen...
Renewability assessment of water resources based on embodied water accounting of wastewater treatment
Author : LING SHAO (1) (2), G.Q. CHEN (2)
ABSTRACT
Artificial wastewater treatment engineering plays an increasingly important role in removing pollutant and assuring human
society of ready-for-reuse water resources. However, a wastewater treatment system needs a lot of socioeconomic
products to sustain its operation and all these products have consumed water resources during their production. The
lifecycle water consumption, i.e., embodied water of a wastewater treatment system may partially offset its benefits in
renewing wastewater. The method of systems accounting as a combination of process analysis and ecological inputoutput
analysis is proposed in this work to trace embodied water of a wastewater treatment system, based on which an
indicator as the ratio of lifecycle water required to the water purified is devised to assess the renewability of water
resources. Two case studies have been carried out for a constructed wetland ecological wastewater treatment system and
a traditional activated sludge wastewater treatment system in Beijing. It is revealed that the traditional wastewater
treatment technology is more efficient in renewing wastewater than the ecological one. The contributed method and
indicator can not only used to compare the renewability of different wastewater treatment technologies, but also be
transplanted to trace the lifecycle water use of other systems, especial water related system or energy related system to
extend our knowledge on water-energy-nexus.
File Size : 294,778 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Extreme events, natural variability and climate change
Date Published : 20/08/2015
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