电动力耦合循环井技术修复低渗透含水层污染

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Abstract A electrodynamic coupled circulation well remediation technique was proposed, with chromate ions as the typical target contaminant. The effectiveness and removal patterns of this technique on groundwater pollution in low-permeability aquifers were investigated. Compared to conventional circulation well techniques, the electrodynamic coupled circulation well technique expanded the remediation radius by 1.25 times, eliminated the remediation blind zone (from 35.56% to 0), and increased the pollutant removal rate from 76.01% to 90.56%. Additionally, the electrodynamic power consumption was reduced by three orders of magnitude compared to electrodynamic remediation techniques, resulting in a higher pollutant removal rate, potentially doubling or tripling the efficiency. This technology coupled with the electric power method realizes the enhanced directional migration of charged ion components in low-permeability aquifers, solves the problems of low mass transfer efficiency, small repair range, and hydraulic circulation blind spots in circulation wells in low-permeability aquifers, and significantly improves the restoration effect.

Key words： low-permeability aquifer electrodynamic remediation circulating well technology groundwater pollution remediation chromate

Received: 04 July 2023

PACS:	X53
	X523

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	Articles by authors
	DU Zhong-hai
	DONG Yan-hong
	LIU Fang-yuan
	DONG Shu-jun
	CHEN Shao-yin
	DONG Qian
	ZHOU Rui

Cite this article:

DU Zhong-hai,DONG Yan-hong,LIU Fang-yuan等. The electrodynamic coupled circulation well technology remediates pollution in low-permeability aquifers[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 841-850.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I2/841

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