• 关键词：城市多源固废  资源能源代谢  物质能量耦合协同  情景分析  绿色低碳循环

• 基金项目：中国科学院美丽中国生态文明建设科技工程专项（No.XDA23030303）；国家重点研发计划项目（No.2020YFC1908905）

• 李啸
• 昆明理工大学冶金与能源工程学院，昆明 650093;中国科学院过程工程研究所绿色过程与工程重点实验室，战略金属资源绿色循环利用国家工程研究中心，北京 100190

• 石垚
• 中国科学院过程工程研究所绿色过程与工程重点实验室，战略金属资源绿色循环利用国家工程研究中心，北京 100190

• 金炳界
• 昆明理工大学冶金与能源工程学院，昆明 650093

• 张晨牧
• 中国科学院过程工程研究所绿色过程与工程重点实验室，战略金属资源绿色循环利用国家工程研究中心，北京 100190

• 顾四海
• 东莞市东实新能源有限公司，东莞 412007

• 王望龙
• 东莞市东实新能源有限公司，东莞 412007

• 李会泉
• 中国科学院过程工程研究所绿色过程与工程重点实验室，战略金属资源绿色循环利用国家工程研究中心，北京 100190;中国科学院大学化学工程学院，北京 100049

• 熊彩虹
• 东莞市东实新能源有限公司，东莞 412007

• 摘要：我国城市固体废物种类多、来源广、产量大，不同固废处置方式不尽相同，但均面临能耗高、二次污染大等问题.本研究从物质流及投入产出分析视角出发，构建了城市多源固废处置能量代谢分析框架及其评价指标体系，并以位于中国粤港澳大湾区唯一的国家级资源循环利用园区为例，通过设置固废单独处置、固废物质协同处置和固废物质能量耦合协同处置3种模式情景，分别从投入、产出和效率3个方面对其能量代谢特征进行综合分析和评估.结果表明，从能源消耗角度来看，物质协同处置能源消耗高出单独处置27.54%，而物质能量耦合协同处置由于实现了余热余能内部回用，其能源消耗较单独处置减少了3.73%.从能量损失情况来看，通过物质协同和物质能量耦合协同，能量损失率从单独处置模式下的73.17%分别降到了65.82%和63.41%，其中废气赋存作为主要能量损失途径占比接近50.00%.从能效角度来看，物质能量耦合协同模式下，能源消耗强度比单独处置和物质协同处置模式下分别降低了11.54%和17.03%，但其能量循环利用率也仅仅只达到了12.22%.综上所述，加强城市多源固废集中化协同处置，可以增强其资源能源替代效应，降低区域生态环境风险，但各种低温烟气及废水的余热利用仍是未来我国固废协同处置下能碳双控的重要方向.同时本研究为城市多源固废处置能量代谢优化过程提供了一套可量化评估的方法和指标体系，将有助于促进我国城市固废综合利用行业绿色低碳循环发展目标的进一步实现.

• Abstract：Solid waste in urban China has shown varied， broadly originated as well as abundantly produced. However， despite the fact that disposal methods for different solid waste are different， they all face the similar problems such as high energy consumption （EC） and producing large amount of secondary pollution. From the perspective of material flow analysis， this study constructed a framework of the energy metabolism analysis and evaluation index system for urban multi-source solid waste disposal. Taking the only national resource recycling park located in Guangdong， Hong Kong and Macao Great Bay area of China as an example， this study sets up three model scenarios of separate disposal， collaborative disposal and energy coupling collaborative disposal of solid wastes to comprehensively analyze and evaluate their energy metabolism characteristics from three aspects including input， output and efficiency. The results showed that the EC of material collaborative disposal is 27.54% higher than that of single disposal， while the EC of material energy coupled collaborative disposal is 3.73% lower than that of single disposal because of the internal reuse of waste heat and energy. The energy loss rate has decreased from 73.17% in the single disposal mode to 65.82% and 63.41% respectively， through material and material-energy coupling synergy， in which the waste gas storage as the main energy loss accounting for nearly 50%. From the perspective of energy efficiency， the energy consumption intensity under the material energy coupling collaborative mode is 11.54% and 17.03%， which are lower than that under the single disposal mode and the material collaborative disposal mode respectively. However， energy recycle utilization rate of material energy coupling collaborative mode is only 12.22%. To sum up， strengthening the centralized and collaborative disposal of urban multi-source solid wastes can enhance the substitution of resources and energy as well as reduce the risk of regional ecological environment. However， for the future growth in China， the utilization of various low-temperature flue gas and remaining heat from the wastewater is still an important direction for balancing energy use and ensuring low-carbon emission under the collaborative disposal of solid wastes. This study provides a set of quantifying evaluation methods and indicator systems for the energy metabolism optimization process of urban multi-source solid waste disposal， which will help to promote the comprehensive utilization of urban solid waste in China and the realization of the green and low-carbon cycle target.

• Key words：urban multi-source solid waste  resource and energy metabolism  material energy coupling synergy  scenario analysis  green and low-carbon circular

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