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首页> 外文期刊>Journal of environmental science and health, Part A. Toxic/hazardous substances & environmental engineering >Geotechnical behaviour of low-permeability soils in surfactant-enhanced electrokinetic remediation
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Geotechnical behaviour of low-permeability soils in surfactant-enhanced electrokinetic remediation

机译:表面活性剂增强动能修复中低渗透性土壤的岩土工程性能

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摘要

Electrokinetic processes provide the basis of a range of very interesting techniques for the remediation of polluted soils. These techniques consist of the application of a current field in the soil that develops different transport mechanisms capable of mobilizing several types of pollutants. However, the use of these techniques could generate nondesirable effects related to the geomechanical behavior of the soil, reducing the effectiveness of the processes. In the case of the remediation of polluted soils with plasticity index higher than 35, an excessive shrinkage can be observed in remediation test. For this reason, the continued evaporation that takes place in the sample top can lead to the development of cracks, distorting the electrokinetic transport regime, and consequently, the development of the operation. On the other hand, when analyzing silty soils, in the surroundings of injection surfactant wells, high seepages can be generated that give rise to the development of piping processes. In this article methods are described to allow a reduction, or to even eliminate, both problems.
机译:电动过程为污染土壤的修复提供了一系列非常有趣的技术的基础。这些技术包括在土壤中应用电流田,开发能够动员多种污染物的不同传输机制。然而,使用这些技术可能会产生与土壤的地质力学行为相关的不良影响,从而降低过程的有效性。在塑性指数大于35的污染土壤修复的情况下,在修复试验中可以观察到过度收缩。因此,样品顶部发生的持续蒸发会导致裂纹的发展,扭曲电动传输状态,从而影响操作的发展。另一方面,在分析淤泥质土壤时,在注入表面活性剂井的周围,会产生高渗流,从而引起管道工艺的发展。在本文中,描述了可以减少甚至消除这两个问题的方法。

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