HAO Xiao-di,YU Wen-bo,WANG Xiang-yang,et al.Life Cycle Comprehensive Efficiency Assessment on Underground Wastewater Treatment Plant[J].China Water & Wastewater,2021,37(7 7):1-10.
Life Cycle Comprehensive Efficiency Assessment on Underground Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
7 7
Page:
1-10
Column:
Date of publication:
2021-04-01
- Keywords:
- underground wastewater treatment plant; life cycle impact assessment (LCIA); life cycle cost (LCC); life cycle ecological efficiency (LCEE); life cycle comprehensive impact (LCCI); comprehensive efficiency
- Abstract:
- Constructing underground wastewater treatment plants (UWWTPs) prevails recently and tends to extend largely in China. Ecological landscape saved by UWWTPs is easy to be seen, which makes an opinion popular that wastewater treatment could combined with ecological landscape. In Europe and Japan much shorter of land, however, it is rare to see UWWTPs, which makes us a query. Therefore, it is necessary to comprehensively assess UWWTPs in some ways and to reveal their pluses and minuses. Based on life cycle impact assessment (LCIA), life cycle cost (LCC) assessment and life cycle ecological efficiency (LCEE) assessment, the study assessed omnibearingly the impacts and efficiencies of UWWTPs, and finally the assessed results from each assessment were normalized into life cycle comprehensive impact (LCCI) assessment. The assessment was based on a real domestic UWWTP, and a proposed surface WWTP was used as a counterpart for comparison. The LCCI results revealed that the comprehensively negative efficiency of UWWTP on the environment, infrastructure investment and ecological efficiency was about 20% higher than that of its counterpart. Although the ecological landscape restored by the UWWTP could form a certain ecological efficiency, it could not neutralize the negative efficiency of the UWWTP on the environment and the infrastructure investment. As a result, UWWTPs are not a preference approach to municipal wastewater treatment. So constructing UWWTP should act according to circumstances and selecting sites of UWWTP have to be prudent.
Last Update:
2021-04-01