构建和应用一个定量模型,用于计算毛细管区LNAPL横向迁移
Rui Zuo1, Ziyi Wu1, Jiawei Liu1
1College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China.
Journal of hazardous materials
|July 27, 2025
概括
一个新的模型量化了轻非水相液体 (LNAPL) 横向迁移,这对于理解和管理广泛的土壤和地下水污染至关重要. 这种工具有助于在有限的数据下评估污染程度.
科学领域:
- 环境科学 环境科学
- 水文地质学 水文地质学
- 地质化学 地质化学
背景情况:
- 在毛细管区的轻非水相液体 (LNAPL) 迁移导致了广泛的污染.
- 了解LNAPL的横向运动对于有效的环境修复至关重要.
研究的目的:
- 开发一个量化模型来计算LNAPL横向迁移距离.
- 建立LNAPL迁移参数与环境因素之间的关系.
主要方法:
- 开发了一种量子模型,将迁移速度和度变化结合起来.
- 进行2D沙实验,观察LNAPL迁移区域.
- 配备了功能来描述LNAPL迁移速度和随时间变化的度.
- 与环境因素相关的模型参数 (θ,EC,pH,ORP).
主要成果:
- LNAPL迁移被划分为四个不同的区域:初始扩散,前部扩张,前部突变和横向扩张.
- 开发了LNAPL横向迁移距离模型 (LNAPL-LMDM).
- 在四个区域的模拟3D条件下计算了LNAPL的横向迁移范围.
结论:
- 在LNAPL-LMDM有效地估计大规模场景中的迁移距离,采用有限的抽样.
- 该模型为识别LNAPL污染范围和规划修复提供了技术基础.
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