Implementation effect of municipal solid waste mandatory sorting policy in Shanghai
Article
Article Title | Implementation effect of municipal solid waste mandatory sorting policy in Shanghai |
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ERA Journal ID | 5850 |
Article Category | Article |
Authors | Wang, Yao (Author), Shi, Yu (Author), Zhou, Jizhi (Author), Zhao, Jun (Author), Maraseni, Tek (Author) and Qian, Guangren (Author) |
Journal Title | Journal of Environmental Management |
Journal Citation | 298, pp. 1-7 |
Article Number | 113512 |
Number of Pages | 7 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0301-4797 |
1093-0191 | |
1095-8630 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jenvman.2021.113512 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0301479721015747 |
Abstract | In Shanghai, the biggest metropolis in China, the source classification of domestic waste began in the 1990s but achieved little success over the past thirty years. Surprisingly, the compulsory classification provision of Shanghai residents’ domestic waste since 2019 has been successful. In this work, the overall status, and challenges of municipal solid waste (MSW) management in Shanghai under compulsory waste sorting rules are investigated. We tracked the classification efficiency of municipal solid waste, physicochemical characteristics of separated waste, and the carbon emissions arising from waste disposal system. It was found that almost 83.62 % of household food waste has been effectively separated with high purity of 99.50 %, while the lower heating value (LHV) of residual waste was increased by 96.4 % compared to previous years. With effective waste classification, the net carbon emission of separated processing was reduced to 0.11 ton CE/ton waste. However, this system generated some negative outcomes as well such as the lower recovery value of metal in bottom ash and the higher chloride content in fly ash. Moreover, we have documented and discussed several challenges of sustainable waste management system in Shanghai in the text. In order to overcome those challenges, we recommend to: (i) establish a finer source separation and recycling system; (ii) develop highly-efficient resource recovery technologies of byproducts from waste disposal system; and (iii) propose optimization adjustment strategy for overcapacity in incineration facilities. |
Keywords | municipal solid waste management; waste sorting rule; classification efficiency; Shanghai |
ANZSRC Field of Research 2020 | 410402. Environmental assessment and monitoring |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Shanghai University, China |
Centre for Sustainable Agricultural Systems | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6975/implementation-effect-of-municipal-solid-waste-mandatory-sorting-policy-in-shanghai
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