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| 融合多源数据的铬污染场地土水污染特征及迁移模拟研究 |
| Research on Characteristics and Migration Simulation of Soil and Groundwater Pollution in A Chromium Contaminated Site Based on Multi source Data |
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| DOI： |
| 中文关键词: 铬 污染场地 土水污染 HYDRUS-3D软件 概念模型 数值模拟 |
| 英文关键词: Chromium Contaminated site Soil and groundwater pollution HYDRUS 3D software Conceptual model Numerical simulation |
| 基金项目:国家重点研发计划基金资助项目（2022YFC3702500）；地下水污染控制与修复教育部工程研究中心开放基金资助项目（GW202413）；江苏省土壤与地下水污染防控工程研究中心自主课题基金资助项目（ZY24008）；中国博士后科学基金面上资助项目（2022M711397） |
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| 中文摘要: |
| 以长三角地区某铬污染场地为研究对象，运用HYDRUS-3D软件构建场地尺度土壤和地下水污染迁移模型，多维度精准刻画污染的空间范围。研究表明：Cr6+在包气带因吸附作用显著富集，而在饱和带则随地下水流动快速扩散迁移，其污染扩散形态在各空间方向上表现出明显的非均质性；包气带在X=950cm后污染消失，最大污染深度Y=320cm，最大污染范围位于Z=200cm地下水面处，面积达631 2324cm2；污染物在泄漏后8 d〖JP3〗进入地下水，38 d测定值（986mg/L）〖JP〗趋于稳定，42 d后进入下游地表水体，最高值为225mg/L，并以最大影响范围27 9035cm2进入敏感受体。 |
| 英文摘要: |
| This paper took a chromium contaminated site in the Yangtze River Delta region as the research object， and constructed a site scale model for pollution migration in soil and groundwater by HYDRUS 3D software to accurately delineate the spatial scope of pollution in multiple dimensions. The study showed that Cr6+ was significantly enriched by adsorption in the vadose zone， but rapidly dispersed and migrated with groundwater flow in the saturated zone， presenting strong heterogeneity 〖GK!87mm〗in pollution dispersion across spatial directions. In the vadose zone， pollution disappeared after X=950 cm， the maximum pollution depth was Y=320 cm， and the maximum pollution extent was located at the groundwater table at Z=200 cm， with an area of 631 2324 cm2. The pollutant entered the groundwater 8 days after the leakage， its measured concentration stabilized at 986mg/L by day 38， 42 days 〖HK〗later， it entered the downstream surface water， with a maximum concentration of 225 mg/L， and entered the sensitive receptor with a maximum impact area of 27 9035 cm2. |
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