Abstract：
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 CO2(t DS)-1 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.
摘要：
本研究旨在建立污水污泥(SS)处理处置技术的综合评价方法,考虑碳排放和环境影响。对中国的6种SS处理和处置技术进行了生命周期评估（LCA）。评估使用IPCC排放因子方法计算碳排放量，使用CML2001方法确定环境影响因子。此外,采用颜色编码的方法对评价结果进行量化.研究发现，S1（厌氧消化+土地施用）具有最低的碳排放量和环境影响，使其成为最佳技术。S1情景的碳排放量为669kgCO2(tDS)-1，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碳排放总量和环境影响的影响。结果表明，填埋对碳排放和环境影响具有较高的敏感性。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。
