Direct Injection Wells Trenches

In a direct injection system, degradation is enhanced through the addition of microbes, nutrients, electron acceptors, or electron donors directly into the aquifer at injection points or directly into the soil. Direct injection technologies include those that employ injection wells or trenches through which supplements are introduced. Some common direct injection technologies use chemical or electrochemical means to increase the level of oxygen in the groundwater, or inject microorganisms that are specifically conditioned to degrading the contaminants of concern. The natural flow of the ground-water is generally not impeded, but is monitored to determine that the degradation of the contaminants and their daughter products is completed within an acceptable distance from the source.

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