Abstract: Objective This study aims to establish a comprehensive hazardous waste appraisal method for mixed solid waste, to ensure the scientific rigor and accuracy of the identification process. Methods Using the forensic appraisal of hazardous mixed sludge waste as an example, this study adopted a comprehensive analytical approach, applying precise initial screening techniques to identify characteristic pollutants. It further assessed corrosive, toxic, reactive, and flammable hazardous properties of the solid waste to effectively complete the hazardous waste determination. Results The mixed sludge was identified as lacking corrosive, toxic, reactive, and flammable properties, and therefore, it did not qualify as hazardous waste. Conclusion The combined approach of precise initial screening and hazardous properties analysis significantly enhances the efficiency and accuracy of forensic appraisal of hazardous waste, providing a practical model for identifying hazardous properties in complex solid waste.

Key words: hazardous waste forensic appraisal, toxic substance content, environmental forensic appraisal；sludge

摘要： 目的 旨在构建一套针对混合固体废物的全流程危险废物鉴定方法，以确保鉴定过程的科学性与准确性。方法 以混合污泥危险废物司法鉴定为例，采用综合分析方法，利用精准初筛技术识别特征污染物，并对固体废物的腐蚀性、毒性、反应性和易燃性危险特性进行分析，从而有效完成危险废物的判定。结果 混合污泥经鉴定不具备腐蚀性、毒性、反应性及易燃性，不属于危险废物。此外，所构建方法具有较高的准确性和实用性，能够有效应对复杂废物的成分识别和危险性评估需求。结论 精准化初筛和危险特性分析评估相结合的综合分析法有效提升危险废物司法鉴定的效率和准确性，为复杂固体废物的危险特性鉴定提供范例。

关键词: 危险废物司法鉴定, 毒性物质含量, 环境损害司法鉴定；污泥