Inderscience Publishers

Feasibility of calcium peroxide as an oxygen releasing compound in treatment walls

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This research investigates the use of a proprietary formulation of calcium peroxide as an oxygen releasing compound in a treatment wall. Laboratory scale column studies evaluated the release of oxygen and the permeability effects resulting from a mixture of the calcium peroxide and a representative aquifer sand (40-mesh Unimin sand). Influent water was prepared at an average dissolved oxygen concentration of 3.1 mg/L and pumped into the treatment wall soil at a constant rate of 0.17 cm³/s to simulate ground water dissolved oxygen and flow conditions. The average changes in relative permeability for mixtures of 0.1%, 0.5% and 1.0% calcium peroxide by weight were 65.6%, 66.1% and 77.1%, respectively. The peak dissolved oxygen levels in the same mixtures were 5.9, 7.40, and 10.7 mg/L, respectively.

Keywords: remediation, barriers, treatment walls, calcium peroxide, permeability, oxygen releasing compounds, contaminated aquifers, groundwater aquifers, groundwater treatment, water treatment

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