基于水动力数值模拟的固体废物倾倒环境损害评估

Research on Environmental Damage Assessment of a Solid Waste Dumping Event Based on Hydrodynamic Numerical Simulation

环境损害鉴定评估是生态环境管理的重要依据。以马鞍山市和县某倾倒固体废物场地为研究区,以未受污染环境的邻近区域土壤和地下水检测结果为基线,围绕因果关系、基于水动力数值模拟进行损害实物量化,开展损害鉴定评估,并提出恢复方案,计算环境损害价值量化费用。结果表明:研究区地下水中硫酸盐、总硬度、锰、溶解性总固体(TDS)和氯化物的浓度超过基线水平,环境损害事实确认;基于水动力数值模拟地下水污染区域范围合计8600 m^(2),总静态抽水量约为20197.06 m^(3);研究区的环境损害价值量化费用共计1183151.41元。研究成果可为后续场地的修复治理、污染责任认定及损害赔偿提供科学依据和综合管理策略。

The appraisal and assessment of environmental damage is an important basis for ecological environment management.Taking a solid waste dumping site in Ma'anshan He County as the study area,and taking the soil and groundwater test results of the adjacent area of the unpolluted environment as the baseline,the damage was quantified based on the causal relationship and hydrodynamic numerical simulation,and the damage appraisal and assessment were carried out.The restoration plan was proposed to calculate the environmental restoration cost.The results showed that the concentrations of sulfate,total hardness,manganese,total dissolved solids(TDS)and chloride in the groundwater in the study area exceeded the baseline level,and the environmental damage was confirmed.Based on the hydrodynamic numerical simulation,the total area of groundwater pollution is 8600 m^(2).The total static pumping volume is about 20197.06m^(3),and the quantified cost of environmental damage value in the study area is 1183151.41 yuan.The research results can provide a scientific basis and comprehensive management strategy for the subsequent site remediation and management,pollution liability determination and damage compensation.