期刊论文

High efficiency removal of As (Ⅲ) in groundwater by a flow through electro- Fenton system

Chen, A.

中文

环境工程学报

1673-9108

2021

15

8

2609-2617

10.12030/j.cjee.202103077

国家重点研发计划（2017YFD0801505）； 优秀青年项目基金资助项目（18B095）； 国家自然科学基金资助项目（51879105）； 湖南省自然科学基金资助项目（2019JJ40128）；

本校为第一机构

为了高效处理地下水中的As（Ⅲ）,设计了一种流通式电芬顿处理系统,考察了电流密度、pH、曝气速率、流速、电解质浓度以及共存离子等关键因素对As（Ⅲ）去除率的影响。此外,对电芬顿体系中As（Ⅲ）的去除机理进行了分析,并对该系统在连续运行下的处理效果进行了评估。结果表明:在最佳反应条件下(电流密度为7.6 mA·cm-2、pH为6、流速为20 mL·min-1、曝气速率为80 mL·min-1、电解质浓度为100 mg·L-1),地下水中As（Ⅲ）的去除率接近100%,该系统可以在近中性的pH范围内发挥作用;在连续运行条件下,该系统能够保持良好的处理稳定性;在电芬顿反应体系中,·OH和HO2·能够共同促进As（Ⅲ）的去除。水...

In order to provide a new solution for the efficient removal of As(Ⅲ) in groundwater, a flow-through electro-Fenton system was proposed in this study. The effects of key factors such as current density, pH, aeration rate, flow rate, electrolyte concentration, and coexisting ions on the removal efficiency of As(Ⅲ) were investigated. In addition, the As(Ⅲ) removal mechanism by the electro-Fenton system was analyzed, and the treatment effect of this system under continuous operation conditions was evaluated. The results showed that the removal ...