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Installing the treatment zone

A box 6m by 4m by 12m deep was excavated, under a cement-bentonite slurry, downgradient of the contaminant plume and a 12m deep by 1.2m diameter reactor vessel placed within it. This reactor formed the treatment zone and was filled with 15t of iron imported from the US. The reactor design was based on an expected 50 years lifetime for this quantity or iron. The contaminated groundwater plume was contained within a cement-bentonite cutoff wall with a design permeability of 10-9m/s. To ...

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