<br>三峡库区重金属铜污染事故预测及对策,Journal of Hazardous Materials

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三峡库区重金属铜污染事故预测及对策
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2023-12-13 , DOI: 10.1016/j.jhazmat.2023.133208
Zhen Liu ₁ , Jing Sang ₁ , Meixuan Zhu ₂ , Renfei Feng ₃ , Xiaowen Ding ₁

Affiliation

为了减轻饮用水源地水污染的危害，开发适用的模型并提出有效的解决方案至关重要。该研究开发了和尚山饮用水源区（HDWSA）水动力模型，利用FORTRAN将地理信息系统（GIS）集成到二维水动力水质模型中。 TECPLOT360 软件（可视化数值模拟软件工具）可视化污染物传输和扩散。该模型的相对误差小于6%，稳定性强、可靠性高。以三峡库区 (TGRA) 的 HDWSA 作为案例研究，重点关注铜 (Cu) 作为污染物。通过调节向家坝水库下游流量，调度一组和调度二组分别增加流量4000m/s和8000m/s。该研究分析了污染事故和流量调度后铜浓度的时空变化。事故工况下，旱期、落水期、淹水期、蓄水期研究区Cu浓度降至标准值（1 mg/L）以下分别需要71、61、49和56 min。调度组 1 和 2 将四个水期的污染物超标持续时间分别缩短了 19-26 分钟和 12-18 分钟。

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Prediction and countermeasures of heavy metal copper pollution accident in the Three Gorges Reservoir Area

In order to mitigate the hazards of water pollution in drinking water source areas (DWSAs), developing applicable models and proposing effective solutions is of paramount significance. The study developed the Heshangshan Drinking Water Source Area (HDWSA) Hydrodynamic Model, integrating Geographic Information System (GIS) into a two-dimensional hydrodynamic water quality model using FORTRAN. TECPLOT360 software (Software Tools for Numerical Simulation with Visualization) visualized contamination transportation and diffusion. The model's relative error is less than 6%, indicating its strong stability and high reliability. The HDWSA in the Three Gorges Reservoir Area (TGRA) was used as a case study, focusing on copper (Cu) as a pollutant. By regulating the flow downstream from the Xiangjiaba Reservoir, Scheduling Group 1 and Scheduling Group 2 respectively increased the flow by 4000 m/s and 8000 m/s. The study analyzed the spatio-temporal variations of Cu concentration following pollution accident and flow scheduling. Under accident conditions, it took 71, 61, 49, and 56 min for the Cu concentration in the study area to decrease to below the standard value (1 mg/L) during dry, falling, flood, and storage periods. Scheduling Groups 1 and 2 reduced the pollutant exceedance duration by 19–26 min and 12–18 min across the four water periods.

更新日期：2023-12-13

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