Atomized Potassium Permanganate Injections Achieve MCL in Clay Geology
 | Permanganate was evident
in monitor wells 30+ feet
from the injection well |
At this federal facility in the Southeast, TCE ground water concentrations within the target treatment area were as high as 1,500 ug/L. An approach using ARS' integrated Pneumatic Fracturing and atomized chemical oxidation was evaluated. The site geology can be characterized as medium reddish brown sandy clay overlying a chalky limestone formation. Using nitrogen gas, the formation was first fractured and then atomized potassium permanganate was injected into the fracture network created by Pneumatic Fracturing.
During the field project, 5,225 pounds of KMNO4 were emplaced within the subsurface targeting a zone from 60 to 80 feet bgs and effectively treating an approximate 3000 sq. foot area around each injection well. Post injection groundwater sampling has showed 100% reduction of TCE.
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