气动力循环井强化Fe^(2+)/O_(2)/配体高级氧化体系修复对硝基酚污染地下水  

Remediation of p-nitrophenol contaminated groundwater using Fe^(2+)/O_(2)/ligand advanced oxidation system enhanced by groundwater circulation well

作　　者：赵薇[1,2,3] 张成武 张慧[1,2,3] 姚禹 辛思怡[1,2,3] 秦传玉 ZHAO Wei;ZHANG Cheng-wu;ZHANG Hui;YAO Yu;XIN Si-yi;QIN Chuan-yu(Key Laboratory of Groundwater Resources and Environment,Ministry of Education,Jilin University,Changchun 130021,China;National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology,Jilin University,Changchun 130021,China;Jilin Provincial Key Laboratory of Water Resources and Environment,Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学,地下水资源与环境教育部重点实验室,吉林长春130021 [2]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130021 [3]吉林省水资源与环境重点实验室,吉林长春130021

出　　处：《中国环境科学》2025年第2期820-828,共9页China Environmental Science

基　　金：吉林省自然科学基金(20230101132JC)。

摘　　要：本研究将气动力循环井(GCW)与Fe^(2+)活化O_(2)的高级氧化体系耦合,在持续补充地下水含氧量的同时实现修复药剂的高效传输和均匀分布,以强化Fe^(2+)/O_(2)/配体高级氧化体系的修复效果.通过二维模拟槽实验,结合示踪染色等可视化手段,明确了GCW作用下地下水流场的变化规律和溶质传输强化效果.在此基础上,选取三聚磷酸钠(STPP)为配体,通过井内注入药剂的方式,考察了高级氧化体系修复对硝基酚(PNP)污染含水层的效果.结果表明,GCW实现了对药剂的高效传输、为高级氧化反应提供充足的O_(2),在GCW强化作用下,整个模拟槽内PNP均有降解,15h平均降解率达62%,成果为有机污染地下水的高效修复提供了新的思路.In this study,GCW was coupled with the advanced oxidation system based on Fe^(2+)activated O_(2)to achieve efficient transmission and uniform distribution of chemical agents while continuously replenishment of oxygen to groundwater,so as to enhance the remediation effect of the Fe^(2+)/O_(2)/ligand was advanced oxidation system.The variation law of groundwater flow field and enhanced transport effect of solute under the enhancement of GCW were clarified using two-dimensional simulation tank experiment combined with visualization methods such as tracer dyeing.In addition,sodium tripolyphosphate(STPP)was selected as the ligand,and the effect of advanced oxidation system on the remediation of p-nitrophenol(PNP)polluted aquifer was investigated by injection of chemicals into the well.The results show that GCW had achieved efficient transmission of chemical agents and provided sufficient O_(2)for advanced oxidation reactions.Under the enhancement of GCW,PNP was degraded throughout the simulated tank,with an average degradation rate of 62%in 15h.The results provide a new insight for efficient remediation of organic contaminated groundwater.

关 键 词：地下水污染 气动力循环井 二价铁活化氧气 三聚磷酸钠 对硝基酚 

分 类 号：X703[环境科学与工程—环境工程] X523