Clark Catherine, Rhea Lee K
Subsurface Remediation Branch, Groundwater Characterization and Remediation Division, Center for Environmental Solutions and Emergency Response, U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK 74820, USA.
Water (Basel). 2023 Nov;15(22):1-12. doi: 10.3390/w15223952.
This article provides an overview of the bioremediation of groundwater plumes containing admixtures of chlorinated volatile organic compounds (CVOCs) and 1,4-dioxane. The remediation of these plumes has historically focused on the reductive dechlorination of the CVOCs. Many of the remaining plumes are relatively large, and contaminant concentrations are diluted below the concentrations that can sustain reductive dechlorination. Cometabolic processes can decrease contaminant concentrations below the thresholds needed to support direct metabolism but typically require the addition of a substrate, such as high-purity propane. Relatively intensive site characterization and monitoring is necessary to implement bioremediation.
本文概述了含有氯代挥发性有机化合物（CVOCs）和1,4-二恶烷混合物的地下水羽状物的生物修复。这些羽状物的修复历来侧重于CVOCs的还原脱氯。许多剩余的羽状物相对较大，污染物浓度被稀释到低于能够维持还原脱氯的浓度。共代谢过程可以将污染物浓度降低到支持直接代谢所需的阈值以下，但通常需要添加一种底物，如高纯度丙烷。实施生物修复需要进行相对密集的场地特征描述和监测。
