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农药污染地块地下水中苯系物及卤代烃运移机制与抽出处理修复模拟

王泓泉

王泓泉. 农药污染地块地下水中苯系物及卤代烃运移机制与抽出处理修复模拟[J]. 环境工程, 2026, 44(8): 169-179. doi: 10.13205/j.hjgc.202608016
引用本文: 王泓泉. 农药污染地块地下水中苯系物及卤代烃运移机制与抽出处理修复模拟[J]. 环境工程, 2026, 44(8): 169-179. doi: 10.13205/j.hjgc.202608016
WANG Hongquan. Migration mechanisms and pump-and-treat remediation simulation for benzene and halogenated hydrocarbons in groundwater at a pesticide-contaminated site[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(8): 169-179. doi: 10.13205/j.hjgc.202608016
Citation: WANG Hongquan. Migration mechanisms and pump-and-treat remediation simulation for benzene and halogenated hydrocarbons in groundwater at a pesticide-contaminated site[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(8): 169-179. doi: 10.13205/j.hjgc.202608016

农药污染地块地下水中苯系物及卤代烃运移机制与抽出处理修复模拟

doi: 10.13205/j.hjgc.202608016
详细信息
    作者简介:

    王泓泉(1987—),男,高级工程师,硕士,主要研究方向为土壤污染风险管控和修复。wanghq87@126.com

Migration mechanisms and pump-and-treat remediation simulation for benzene and halogenated hydrocarbons in groundwater at a pesticide-contaminated site

  • 摘要: 随着我国城市化进程推进,化工企业停产搬迁遗留污染地块,导致地下水环境风险加剧,对人体健康构成威胁。研究以某农药污染地块为对象,基于地下水模拟系统(GMS)软件,构建三维地质结构模型、地下水流模型和溶质运移模型,模拟苯、氯仿和氯乙烯3种特征污染物在含水层中的运移机制及抽出处理修复效果。结果表明:污染物运移初始阶段(100 d内)从泄漏源向四周均匀扩散,随后500~2000 d内沿地下水自东南至西北流向呈椭圆形扩散,苯、氯仿和氯乙烯最大迁移距离分别增至154.5,130.5,165.2 m,扩散面积分别达18117.4,13928.5,25043.2 m2;浓度峰值随时间和距离递减,其中,苯从53.3 mg/L降至13.0 mg/L(降幅75.6%),氯仿从112.0 mg/L降至20.0 mg/L(降幅82.1%),氯乙烯从128.0 mg/L降至24.0 mg/L(降幅81.3%)。针对抽出处理修复技术路线,通过动态抽水方案,模拟至400 d时,苯、氯仿和氯乙烯的污染羽面积分别减少85.8%、78.0%和85.9%,最大浓度分别下降约90.2%、82.1%和93.8%;模拟500 d修复周期内污染物浓度均降至修复目标值以下,抽水总量分别为94500,60000,72000 m3;采用Fenton试剂(3%投加量)处理抽出地下水,修复效果可达标。研究证实数值模拟可优化污染范围确定与抽水方案,为同类场地提供了经济高效的技术路径。
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  • 收稿日期:  2025-06-25

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