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目的针对大气环境污染损害鉴定评估中的溯源技术难点,根据《环境损害鉴定评估推荐方法(第Ⅱ版)给出的环境损害因果关系适用判定方法,为环境管理、环境司法等提供技术支撑。方法以某氟材料制品公司火灾事故损害鉴定为例,研究提出了科学严谨的过火失重-环境预测-因果关系的鉴定评估技术方案,根据确定的失重源强,采用国家环境保护部发布的SCREEN3估算模型进行数值模拟。结果从模拟结果可见,在假定最大源强下,火灾产生的氟化物最大影响距离不超过500 m,该范围内没有受损果园,可以确定果木减产与公司火灾不存在明显的因果关系。结论表明应用SCREEN3大气估算模型可实现保守科学定量化的污染损害溯源,对大气环境污染损害鉴定评估领域的因果关系判定具有重要的指导意义。
Aim To address the technical difficulties of traceability in the appraisal and assessment of atmospheric pollution damage and to provide a technical support for environmental management and environmental justice according to the applicable judgment method for the causality of environmental damage given in the Recommended Methods for Environmental Damage Appraisal and Assessment (Version II). Taking the identification of damage caused by fire accident of a certain fluorine material products company as an example, a scientific and rigorous overqualification-environmental prediction-causal relationship appraisal and evaluation scheme was proposed. According to the determined weight loss intensity source, SCREEN3 released by the Ministry of Environmental Protection The model is numerically simulated. Results It can be seen from the simulation results that under the presumed maximum source intensity, the maximum influence range of fluoride produced by fire does not exceed 500 m. There is no damaged orchard in this range. It is concluded that there is no obvious causal relationship between the fruit yield reduction and company fire. The conclusion shows that SCREEN3 atmospheric estimation model can be used to quantitatively trace the source of pollution damage, and it is of great significance to judge the causal relationship in the appraisal and assessment of atmospheric pollution damage.