去除土壤和废水中的二氯甲烷：综述。
Removal of dichloromethane from ground and wastewater: a review.
机构信息
Laboratory of Green Chemistry, Faculty of Technology, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland.
出版信息
Chemosphere. 2013 Oct;93(7):1258-67. doi: 10.1016/j.chemosphere.2013.07.022. Epub 2013 Aug 12.
Dichloromethane (DCM) is a toxic volatile compound which is found in the ground waters and wastewaters of the pharmaceutical, chemical, textile, metal-working and petroleum industries. DCM inhibits the growth of aquatic organisms, induces cancer in animals and is potentially carcinogenic for humans. This article aims to review existing water treatments for DCM removal, focusing on recent technological advances. Air stripping, adsorption and pervaporation were found to be effective in separating DCM from water with a process efficiency of about 99%, 90% and 80% respectively. Electrocatalysis over Cu-impregnated carbon fiber electrode, photo irradiation over TiO₂ and photo-Fenton process led to the complete decomposition of DCM. Aerobic and anaerobic water treatment achieved 99% and 95% removal of DCM respectively. The maximum efficiencies observed for acoustic cavitation, radiolysis and catalytic degradation of CH₂Cl₂ were 90%, 92% and 99% respectively. Ozonation and persulfate oxidation showed lower DCM degradation efficiencies, not exceeding 20%. Further combination of different water treatment methods will further increase DCM degradation efficiency.
二氯甲烷（DCM）是一种有毒的挥发性化合物，存在于制药、化工、纺织、金属加工和石油工业的地下水和废水中。DCM 抑制水生生物的生长，在动物中诱发癌症，对人类具有潜在的致癌性。本文旨在回顾现有的 DCM 去除水的处理方法，重点介绍最新的技术进展。空气吹脱、吸附和渗透蒸发被发现能有效地将 DCM 从水中分离出来，其过程效率分别约为 99%、90%和 80%。Cu 浸渍碳纤维电极上的电催化、TiO₂ 光辐照和光芬顿工艺导致 DCM 完全分解。好氧和厌氧水处理分别实现了 99%和 95%的 DCM 去除率。声空化、辐射分解和 CH₂Cl₂催化降解的最大效率分别为 90%、92%和 99%。臭氧氧化和过硫酸盐氧化显示出较低的 DCM 降解效率，不超过 20%。进一步结合不同的水处理方法将进一步提高 DCM 的降解效率。
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