- Publications & Research
- Publication #263
Hybrid input-output analysis of wastewater treatment and environmental impacts: A case study for the Tokyo Metropolis
- Hybrid input-output analysis of wastewater treatment and environmental impacts: A case study for the Tokyo Metropolis
- Chih-Yi Lin
- Journal Article
Ecological Economics, Volume 68, Issue 7, Pages 2096-2105
- This paper proposes a new hybrid input-output model designed to analyze both the generation and treatment of wastewater. This model, named wastewater treatment input-output model (WWIO), can be regarded as an extension of the waste input-output model (WIO). As an application, I compiled the Tokyo Metropolitan WWIO table for 2000, which comprises 482 economic sectors, 11 wastewater treatment sectors, 12 types of wastewater-related waste and 6 types of environmental load. The model was applied to different scenarios to compare alternative wastewater treatment systems. The results indicate that replacing the simple treatment with the high-class treatment improves the quality of treated water while increasing CO2-equivalent emissions. Meanwhile, when the dewatered sludge is incinerated instead of landfilling, both CO2-equivalent emissions and landfill volume decrease.
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