Electrokinetic Transport of Bacteria In Situ for Bioremediation of Ground Water

在许多地下水污染案例中，就地生物修复可能是唯一具有成本效益和时间效益的处理技术。然而，成功的治疗可能需要在受污染的目标区存在具有代谢能力的细菌。在缺乏有利的地下水坡度的情况下，问题就变成了安装足够的注水井和采油井，以通过受污染区域吸收营养物质或代谢活性细菌。电动力学已被认为是一种将带电污染物从土壤和含水层固体中抽取到回收井中的现场处理技术。初步研究表明，人们可以使用这项相同的技术来定向地通过模型含水层固体运输微生物。Envigen Inc.建议使用能够从含水层材料表面降解三氯乙烯(三氯乙烯、氯乙烯、二氯乙烯和其他相关污染物)的细菌来优化和演示这项技术。

In many cases of ground water pollution, in situ bioremediation may be the only cost-effective, time-efficient treatment technology. Successful treatment, however, may require the presence of metabolically capable bacteria in the polluted target zone. In the absence of a favorable ground water gradient, the problem becomes one of installing enough injection and recovery wells to draw nutrients or metabolically active bacteria through the contaminated zone. Electrokinetics has been proposed as an in situ treatment technology for drawing charged contaminants through soil and aquifer solids to a recovery well. Preliminary studies have shown that one can use this same technology directionally to transport microorganisms through model aquifer solids. Envirogen Inc. proposes to optimize and demonstrate this technology with bacteria capable of degrading trichloroethylene (TCE, vinyl chloride, dichloroethylene and other related contaminants from the surface of aquifer materials.