电动力耦合循环井技术修复低渗透含水层污染  

The electrodynamic coupled circulation well technology remediates pollution in low-permeability aquifers

作　　者：杜中海 董艳红 刘方圆[1,2] 董书君 陈韶音 董倩 周睿[1,2] DU Zhong-hai;DONG Yan-hong;LIU Fang-yuan;DONG Shu-jun;CHEN Shao-yin;DONG Qian;ZHOU Rui(National and Local Joint Engineering Laboratory of Petrochemical Contaminated Site Control and Remediation Technology,Jilin University,Changchun 130061,China;College of New Energy and Environment,Jilin University,Changchun 130061,China;China Northeast Municipal Engineering Design and Research Institute Co.Ltd,Changchun 130021,China)

机构地区：[1]吉林大学,石油化工污染场地控制与修复技术国家地方联合工程实验室,吉林长春130061 [2]吉林大学新能源与环境学院,吉林长春130061 [3]中国市政工程东北设计研究总院有限公司,吉林长春130021

出　　处：《中国环境科学》2024年第2期841-850,共10页China Environmental Science

基　　金：吉林省科技发展计划项目(20220203008SF);国家重点研发计划项目(2020YFC1808301)。

摘　　要：提出一种电动力耦合循环井修复技术,以铬酸盐为典型目标污染物,研究该技术对低渗透含水层中地下水污染的修复效果及去除规律.结果表明:电动力耦合循环井技术相比循环井技术,修复半径扩大为原来的1.25倍,修复盲区面积占比从35.56%降为0,污染物的去除率从76.01%提高到了90.56%,相较于电动力修复技术电动力能耗降低了3个数量级,污染物去除率更高,可提升2~3倍.该技术耦合电动力方法实现了低渗透含水层中带电离子组分的强化定向迁移,解决了循环井在低渗透含水层中传质效率低、修复范围小、存在水力循环盲区等问题,修复效果显著提升.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.

关 键 词：低渗透含水层 电动力修复 循环井技术 地下水污染修复 铬酸盐 

分 类 号：X53[环境科学与工程—环境工程] X523