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Author:

Chen, Sichen (Chen, Sichen.) | Yu, Lu (Yu, Lu.) | Zhang, Chenmu (Zhang, Chenmu.) | Wu, Yufeng (Wu, Yufeng.) | Li, Tianyou (Li, Tianyou.)

Indexed by:

EI Scopus SCIE

Abstract:

As a national pilot city for solid waste disposal and resource reuse, Dongguan in Guangdong Province aims to vigorously promote the high-value utilization of solid waste and contribute to the sustainable development of the Greater Bay Area. In this study, life cycle assessment (LCA) coupled with principal component analysis (PCA) and the random forest (RF) algorithm was applied to assess the environmental impact of multi-source solid waste disposal technologies to guide the environmental protection direction. In order to improve the technical effi-ciency and reduce pollution emissions, some advanced technologies including carbothermal reduction-oxygen -enriched side blowing, directional depolymerization-flocculation demulsification, anaerobic digestion and incineration power generation, were applied for treating inorganic waste, organic waste, kitchen waste and household waste in the park. Based on the improved techniques, we proposed a cyclic model for multi-source solid waste disposal. Results of the combined LCA-PCA-RF calculation indicated that the key environmental load type was human toxicity potential (HTP), came from the technical units of carbothermal reduction and oxygen-enriched side blowing. Compared to the improved one, the cyclic model was proved to reduce material and energy inputs by 66%-85% and the pollution emissions by 15%-88%. To sum up, the environmental impact assessment and systematic comparison suggest a cyclic mode for multi-source solid waste treatments in the park, which could be promoted and contributed to the green and low-carbon development of the city.

Keyword:

Energy conservation Emission reduction Multi -source solid waste Recycling park Comprehensive environmental assessment

Author Community:

  • [ 1 ] [Chen, Sichen]Beijing Univ Technol, Inst Circular Econ, Fac Mat & Mfg, Beijing, Peoples R China
  • [ 2 ] [Yu, Lu]Beijing Univ Technol, Inst Circular Econ, Fac Mat & Mfg, Beijing, Peoples R China
  • [ 3 ] [Wu, Yufeng]Beijing Univ Technol, Inst Circular Econ, Fac Mat & Mfg, Beijing, Peoples R China
  • [ 4 ] [Li, Tianyou]Beijing Univ Technol, Inst Circular Econ, Fac Mat & Mfg, Beijing, Peoples R China
  • [ 5 ] [Zhang, Chenmu]Chinese Acad Sci, Inst Proc Engn, Beijing, Peoples R China
  • [ 6 ] [Yu, Lu]Beijing Univ Technol, Inst Circular Econ, Fac Mat & Mfg, 100, Pingleyuan, Beijing, Peoples R China

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Source :

JOURNAL OF ENVIRONMENTAL MANAGEMENT

ISSN: 0301-4797

Year: 2023

Volume: 339

8 . 7 0 0

JCR@2022

ESI Discipline: ENVIRONMENT/ECOLOGY;

ESI HC Threshold:17

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 24

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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