Life cycle environmental impact assessment for MSW-SRF preparation processes

QI Jianan; WANG Huan; LI Bing; LIU Haiwei

doi:10.13205/j.hjgc.202506022

Volume 43 Issue 6

Jun. 2025

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QI Jianan, WANG Huan, LI Bing, LIU Haiwei. Life cycle environmental impact assessment for MSW-SRF preparation processes[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(6): 204-213. doi: 10.13205/j.hjgc.202506022

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QI Jianan, WANG Huan, LI Bing, LIU Haiwei. Life cycle environmental impact assessment for MSW-SRF preparation processes[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(6): 204-213. doi: 10.13205/j.hjgc.202506022

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Life cycle environmental impact assessment for MSW-SRF preparation processes

doi: 10.13205/j.hjgc.202506022

China Enfi Engineering Group, Beijing 100038, China

Received Date: 2024-07-23
Accepted Date: 2024-09-18
Rev Recd Date: 2024-08-30

Abstract

Abstract

In recent years， along with the advancement of circular economy construction and the elevation of solid waste harmless treatment， a series of projects producing solid recovered fuel （SRF） from municipal solid waste（MSW） have been successively launched in China. In order to clarify the environmental impacts of MSW-SRF incineration for power generation and to reveal the difference in environmental impacts caused by different SRF preparation processes， OpenLCA software was used to conduct a "cradle-to-grave" life cycle assessment of SRF prepared by three typical short processes： mechanical separation， biological drying and high-pressure extrusion-biological drying. At the same time， the life cycle assessment of MSW incineration for power generation was also carried out as a comparison. Taking 1 ton of MSW as the functional unit， the ReCiPe 2016 method was applied to evaluate the life cycle environmental impacts of SRF incineration from 3 aspects： human health damage， ecosystem damage， and resource consumption. Additionally， the key life cycle processes contributing to these environmental impacts were revealed. The results showed that the environmental impacts of SRF incineration were mainly caused by the emission of CO₂ and pollutants in the incineration flue gas， while the environmental impacts of material transportation and SRF preparation were relatively insignificant. The main environmental impacts caused by SRF incineration power generation were climate change and particulate matter formation， while the environmental benefits included reduced terrestrial ecological toxicity and lower fossil energy consumption. Among the three SRF preparation processes， the high-pressure extrusion-biological drying process was the least harmful to the environment. Compared with the direct incineration of MSW， the high-pressure extrusion-biological drying SRF incineration could reduce the damage to human health by 11.7%， reduced the ecosystem damage by 462.4%， and increase the resources saving effect by 81.4%. The result revealed the environmental impacts of various processes for MSW-SRF preparation， providing data support and theoretical basis for the selection and optimization of MSW-SRF production processes.
- MSW,
- SRF,
- environmental impacts,
- life cycle assessment,
- incineration

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References(31)

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