密度效应对修复药剂在含水层迁移的影响——以KMnO<sub>4</sub>溶液为例的室内实验研究

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Abstract The solution of KMnO₄ was used in this study to investigate the migration and distribution of KMnO₄ in simulated aquifer.This study focused on the influence of concentration and aquifer material size on density effect through a series of two-dimensional simulation tank experiments.The sinking phenomenon of KMnO₄ solution in the medium and coarse sand simulated aquifers was obvious.The sinking degree of migration front was more and more obvious during the migration process,which changed the migration form from plug flow to stratified flow and resulted in the failure of KMnO₄ distribution at shallow simulated aquifer.The greater the material size and the higher the concentration of remedial reagent,the more obvious the frontal sinking phenomenon at the preliminary stage was,but the extent of solution sinking was inversely proportional to the medium size and the concentration at the later stage.For the main migration region behind the migration front,KMnO₄ gradually distributed more uniformly with the extension of migration time.

Key words： density effect remedial reagent KMnO₄ migration and distribution aquifer

Received: 22 August 2017

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	Articles by authors
	FU Yu-feng
	LIAN Jing-ru
	GUO Chao
	HE Yu
	QIN Chuan-yu

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FU Yu-feng,LIAN Jing-ru,GUO Chao等. Influences of density effect on the migration of remedial reagent in aquifer-Laboratory study using KMnO₄ solution as an example[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 993-1000.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/993

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