电催化还原脱氯法处理氯代有机废水研究进展

Review of electrocatalytic hydrodechlorination method for treatment of chlorinated organic wastewater

氯代有机物广泛应用于诸多行业,能够通过多种途径进入环境,对水体、大气、土壤造成了污染,其中,地下水和地表水中氯代有机物的污染尤为严重。因此,有效控制和处理废水中的氯代有机污染物是一项重要课题。在诸多氯代有机废水处理技术中,电催化还原脱氯技术因具有选择性高、二次污染小、反应条件温和的优点,成为了一种实用前景很好的环境友好型脱氯技术。首先简要介绍了电催化还原脱氯技术的作用原理,总结了应用电催化还原脱氯技术处理废水中氯代有机污染物的研究现状,而后分别探究了电极材料和环境因素对氯代有机污染物降解效率的影响,进一步分析了该技术目前面临的问题,并展望了该技术未来的发展方向。

Chlorinated organic compounds have been widely used in many industries and entered the environment through multiple ways,causing pollution to the air,soil,and aquatic environments.Among them,the pollution of chlorinated organics in groundwater and surface water is particularly serious.Therefore,effective control and treatment of chlorinated organic pollutants in wastewater is an important subject.Referring to the degradation technologies,electrocatalytic hydrodechlorination(EHDC)is practical and environmentally friendly due to its mild reaction conditions,high selectivity and low secondary pollution.In this paper,the degradation mechanism of chlorinated organic pollutants and the research development of electrocatalytic hydrodechlorination were reviewed.What’s more,this paper explored the effects of electrode materials and environmental factors on the removal efficiency of chlorinated organic pollutants.Furthermore,the current problems in practical application were analyzed and the future development direction of this technology is prospected.