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在Fe(0) 混合材料基础上的顺序地下水整治中,用于孔隙性评估的动态模型

Wen Zhang¹, Liang Qi², Dunzhu Li³

¹Zhejiang University of Water Resources and Electric Power, No. 508, 2nd Street, Qiantang District, Hangzhou 310018, Zhejiang Province, China; Civil Structural & Environmental Engineering, Trinity College Dublin, The University of Dublin, College Green, Dublin 2 D02 PN40, Ireland.

The Science of the total environment

|November 14, 2023

概括

这项研究优化了使用零价值铁 (ZVI) 在现场进行地下水整治. 酸激活ZVI有效地去除酸盐,并确定了最佳参数,用于提高水库系统中的污染物处理.

科学领域:

环境工程环境工程
水文地质学水文地质学
地质化学地质化学

背景情况:

污染物在均的含水层系统中的分布往往不均,阻碍了有效的地下修复.
准确的地下水矩阵表征对于在现场污染物处理的成功至关重要.
酸盐污染对地下水质量和生态系统健康构成重大威胁.

研究的目的:

调查酸激活的零价值铁[Fe(0),ZVI]在现场酸盐修复中的有效性.
开发一个以质量转移为中心的模型,以了解溶液迁移和孔隙性相互作用.
确定最佳的操作参数,以提高地下水中酸盐的去除.

主要方法:

柱状试验是使用不同重量比率的酸激活Fe(0) 砂进行的.
开发了一种以质量转移为中心的模型来分析孔隙性和溶解物迁移动态.
在不同的条件下计算了酸盐衰减动力学和效率孔隙性.

主要成果:

通过Fe(0) 减弱酸盐遵循的是第一阶动力模型.
增强酸盐去除的最佳参数包括0.5/0.5体积比的Fe(0) /砂和7.3小时的液压保留时间 (HRT).
在质量转移速率系数 (K) 和Fe{0}/砂比之间观察到正相关性.

结论:

该研究成功地优化了用酸激活ZVI.使用酸载荷地下水的现场整治.
开发的模型准确地预测了多孔度和优选流量,有助于操作参数校准.
这些发现为提高地下污染物处理在含水层系统中的效率提供了框架.

关键词:

Fe(0) 减少了酸盐的含量.同质化系统的同质化系统.酸盐度的动力学混合填充剂的混合填充剂.孔隙性模型是什么

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