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SUSTAINED IN SITU CHEMICAL OXIDATION (ISCO) OF 1,4-DIOXANE AND CHLORINATED VOCS USING SLOW-RELEASE CHEMICAL OXIDANT CYLINDERS
Evans, P., J. Hooper, M. Lamar, D. Nguyen, P. Dugan, M. Crimi, and N. Ruiz.
ESTCP Project ER-201324, 576 pp, 2018

Slow-release chemical oxidant cylinders were applied to the treatment of a plume containing 1,4-dioxane and chlorinated VOCs (1,2-DCE, 1,1-DCA, cis-1,2-DCE, and TCE) in a technology demonstration conducted at Naval Air Station North Island, Calif. The objectives were to demonstrate and evaluate the technology's effectiveness, sustainability, longevity, oxidant transport and destruction, implementability, secondary water quality impacts, and technology reproducibility. Unactivated persulfate embedded in a slow-release paraffin wax formulation was emplaced in two 4-inch wells housed inside 18-inch diameter boreholes. The majority of the project's performance objectives were met. The oxidant cylinders are commercially available, but equipment for suspending cylinders in wells or reactive gates is not standardized and will require engineering design and possible custom fabrication. https://www.serdp-estcp.org/content/download/47649/454308/file/ER-201324%20Final%20Report.pdf



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