Huang Diannan, Wu Yuhan, Zhang Li, Tang Yulan, Liu Chuang, Zhang Rongxin, Wang Yongyong, Gao Yunan
School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang, People's Republic of China.
School of Environmental and Chemical Engineering, Foshan University, Foshan, People's Republic of China.
Environ Technol. 2025 Jan;46(4):477-493. doi: 10.1080/09593330.2024.2360232. Epub 2024 May 31.
This study aimed to create a comprehensive evaluation method for sewage sludge (SS) treatment and disposal technologies, considering carbon emission and environmental impacts. Life cycle assessment (LCA) were conducted on six SS treatment and disposal technologies in China. The assessments used the IPCC emission factor approach to calculate carbon emissions and the CML2001 method to determine environmental impact factors. Additionally, a colour-coded method was implemented to quantify the evaluation results. The study found that S1 (anaerobic digestion + land application) had the lowest carbon emissions and environmental impact, making it the optimal technology. The S1 scenario had carbon emissions of 669 kg CO(t DS) and environmental impacts of 5.20E-10. A sensitivity analysis was conducted to show the impacts of each unit in the six technologies on total carbon emissions and environmental impacts. The results showed that landfilling has a high sensitivity to carbon emissions and environmental impacts. Therefore, controlling greenhouse gases and toxic substances in sludge landfills is crucial for reducing carbon emissions and environmental pollution.
本研究旨在创建一种综合评估方法，用于考虑碳排放和环境影响的污水污泥（SS）处理与处置技术。在中国对六种污水污泥处理与处置技术进行了生命周期评估（LCA）。评估采用IPCC排放因子方法计算碳排放，并采用CML2001方法确定环境影响因子。此外，实施了一种颜色编码方法来量化评估结果。研究发现，S1（厌氧消化+土地施用）的碳排放和环境影响最低，是最优技术。S1方案的碳排放为669 kg CO₂(t DS)，环境影响为5.20E-10。进行了敏感性分析，以显示六种技术中每个单元对总碳排放和环境影响的影响。结果表明，填埋对碳排放和环境影响具有高敏感性。因此，控制污泥填埋场中的温室气体和有毒物质对于减少碳排放和环境污染至关重要。
