循环井技术修复地下水氯苯污染的效果研究

Research on effect in remediation of chlorobenzene contaminated groundwater by circulation well

本次研究应用地下水循环井技术处理受氯苯污染的地下水场地,在污染场地内共建设4口循环井进行井内循环治理和9口监测井进行监测。研究结果表明:随着井内循环的持续运行,地下水中污染物氯苯的浓度快速降低;连续运行28d后,地下水中氯苯去除率达95.6%~97.6%;氯苯浓度最高的点位从227.28mg·L^(-1)下降到5.46mg·L^(-1)。井内循环修复工艺可快速去除地下水中氯苯污染,若要达到人体健康风险可接受的修复目标或稳定的修复效果,建议与其它地下水修复技术联合应用。

In this study, groundwater circulation wells were used to treat the contaminated groundwater sites by chlorobenzene, and a total of 4 circulation wells were bulk in the contaminated sites to carry out the well circu- lation control and 9 monitoring wells. The results showed that with the continuous operation of the well cycle, con- centration of chlorobenzene pollutants in groundwater decreased rapidly; the continuous operation of 28 days, the removal rate of chlorobenzene in groundwater was 95.6%~97.6%; the highest concentration of chlorobenzene point decreased from 227.28mg·L^-1 to 5.46mg·L^-1. In order to achieve the goal of human lhealth risk, the repair process can be used to remove the contamination of groundwater, and the proposed technique is combined with other groundwater remediation technologies.