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  3. 化學工程學系
Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/408247
Title: Assessment of multiple sustainability demands for wastewater treatment alternatives: A refined evaluation scheme and case study
Authors: Wang X.
Liu J.
Ren N.-Q.
Yu H.-Q.
Lee D.-J. 
Guo X.
Issue Date: 2012
Journal Volume: 46
Journal Issue: 10
Start page/Pages: 5542-5549
Source: Environmental Science and Technology 
Abstract: 
Current estimation schemes as decision support tools for the selection of wastewater treatment alternatives focus primarily on the treatment efficiency, effluent quality, and environmental consequences for receiving water bodies. However, these schemes generally do not quantify the potential to convert pollutants in wastewater to recoverable resources. This study proposes a refined evaluation scheme for choices of wastewater treatment processes that quantifies not only adverse environmental effects but also bioenergy and nutrient recovery indices. An original means of data processing was established and clear estimate indicators were consequently obtained to allow a smooth overall estimation. An array of wastewater treatment alternatives that meet three effluent limits were used as case studies to demonstrate how the present scheme works, simultaneously, to identify optimum choices. It is concluded in the overall estimation that the lower sustainability of wastewater treatment contributed by increasingly stringent discharge demands was offset and mitigated by the resource-recovery scenarios involved, and the scenario of recovering nutrients via excess-sludge composting was of more benefit. Thus, before tightening wastewater discharge requirements, one should bear in mind the situation of multiple sustainability by setting a goal to achieve not only the greatest reduction in environmental burden but also the maximum resource-recovery benefits. ? 2012 American Chemical Society.
URI: https://scholars.lib.ntu.edu.tw/handle/123456789/408247
ISSN: 0013936X
DOI: 10.1021/es300761x
Appears in Collections:化學工程學系

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