提高城市生态系统的整体可持续性 城市固体废物转化为能源战略使用扩展功能的会计分析
Jianrui Liu1, Harn Wei Kua2, Chi-Hwa Wang3
1Department of Mechanical Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
The Science of the total environment
|September 2, 2023
概括
无氧消化是城市生态系统的最佳废物转化能源战略,优于焚烧和气化. 这种方法为自然,社会和经济子系统提供了卓越的成本效益,能源回收和整体的可持续性改进.
科学领域:
- 环境工程与可持续发展
- 能源回收和废物管理
- 城市生态系统分析
背景情况:
- 废物转化能源 (WTE) 技术对于减少废物和回收能源至关重要,但在城市条件下,它们的适用性各不相同.
- 现有的WTE战略需要从城市生态系统的角度进行全面的可持续性评估.
- 评估WTE对社会,经济和环境子系统的影响对于明智决策至关重要.
研究的目的:
- 开发一个分析框架,使用扩展的实力会计来选择最佳的WTE战略.
- 量化建模城市生态系统的成本和收入,以进行多标准成本效益分析.
- 评估不同食品废弃物处理方案对城市生态系统可持续性的影响.
主要方法:
- 应用扩展的能量会计方法来制定城市生态系统的成本和收入.
- 开发一个包含五个成本类别和直接/间接收入的多标准成本效益量化模型.
- 在新加坡一家食品中心对食品废弃物处理方案 (焚烧,无氧消化,气化) 的案例研究分析.
主要成果:
- 无氧消化 (情景I) 与焚烧 (71,536.01 MJ/年; 135,312.66 MJ/年) 和气化 (74,190.34 MJ/年; 298,426.81 MJ/年) 相比,产生较低的城市生态系统成本 (61,854.87 MJ/年) 和更高的收入 (405,442.53 MJ/年).
- 无氧消化证明了更高的技术能量转换效率和对整体城市生态系统可持续性的更大贡献.
- 选择的WTE战略显著改善了自然,社会和经济子系统.
结论:
- 无氧消化成为城市环境的最佳城市固体废物转化能源战略.
- 拟议的扩展能源核算框架有效地评估了 WTE 对整体城市可持续性的战略.
- 通过无氧消化在现场处理食品废弃物提供了显著的环境,社会和经济效益.
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