污染控制隔离墙的设计,实施和环境影响 在一个工业遗产地点的污染控制隔离墙
Lu Yu1, Sichen Chen1, Jinnan Wang1
1College of Materials Science & Engineering, Beijing University of Technology, Beijing 100124, China.
Toxics
|January 24, 2025
概括
隔离墙有效防止重金属和有机污染物在工业场所的传播. 这项研究表明,它们在降低土壤和地下水中的 (Pb) 和多二 (PCB) 等复杂污染物的成功.
科学领域:
- 环境工程 环境工程
- 地质技术工程 地质技术工程
- 环境科学 环境科学
背景情况:
- 工业遗留地面临着重金属和有机污染物严重污染的土壤和地下水.
- 与污染后补救相关的高成本和困难需要积极的污染控制策略.
- 隔离墙为防止复杂污染物的先进传播提供了一个有希望的解决方案.
研究的目的:
- 调查切断墙在缓解电子废物拆卸场所重金属有机化合物污染方面的有效性.
- 评估关键污染物的空间分布和分散路径,特别是 (Pb) 和多双 (PCB).
- 为环境保护提供切断墙技术的实用,现场规模的演示.
主要方法:
- 在现场进行实地调查,以确定土壤和地下水中的污染物度和分布 (Pb,Cd,PCB,PBDE).
- 使用Visual MODFLOW-MT3DMS进行数值模拟,研究土壤-地下水界面的污染物分散路径.
- 在受污染的地点设计,验证和应用50米×2米×3米的切断墙,随后进行为期六个月的地下水质量监测.
主要成果:
- 在土壤和地下水中确定了Pb,Cd,PCB和PBDE的显著度和空间分布.
- 数字模拟预测了污染物迁移路径,为切断墙设计提供了信息.
- 安装后的监测证实,隔离墙降低了所有污染指标,包括Pb和PCB,低于国家第四级地下水标准.
结论:
- 切断墙的实地应用是阻止污染工业场所复杂污染物的扩散的可行策略.
- 这种方法提供了有效的土壤-地下水环境保护,并促进工业遗产遗址的土地再利用.
- 该研究提供了设计和实施污染防治隔离墙的验证协议.
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