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Groundwater remediation engineering-Study on the flow distribution of air sparging using acetylene

机译:地下水修复工程-乙炔鼓入空气的流量分布研究

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Air sparging (AS) is an emerging method to remove VOCs from saturated soils and groundwater. Air sparging performance highly depends on the air distribution resulting in the aquifer. In order to study gas flow characterization, a two-dimensional experimental chamber was designed and installed. In addition, the method by using acetylene as the tracer to directly image the gas distribution results of AS process has been put forward. Experiments were performed with different injected gas flow rates. The gas flow patterns were found to depend significantly on the injected gas flow rate, and the characterization of gas flow distributions in porous media was very different from the acetylene tracing study. Lower and higher gas flow rates generally yield more irregular in shape and less effective gas distributions.
机译:空气喷射(AS)是一种从饱和土壤和地下水中去除VOC的新兴方法。空气喷射性能在很大程度上取决于形成含水层的空气分布。为了研究气流的特性,设计并安装了一个二维实验室。另外,提出了以乙炔为示踪剂直接对AS工艺气体分布结果进行成像的方法。在不同的注入气体流速下进行了实验。发现气体的流型很大程度上取决于注入的气体流率,并且多孔介质中气体流分布的特征与乙炔示踪研究有很大不同。较低和较高的气体流速通常会导致形状更不规则且气体分布效率较低。

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