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RESEARCH AND APPLICATION OF ARSENIC-CONTAMINATED GROUNDWATER REMEDIATION BY MANGANESE ORE PERMEABLE REACTIVE BARRIER
Li, Y., Y. Huang, W. Wu, M. Yan, and Y. Xie.
Environmental Technology [Published online 11 November 2019 prior to print]
Natural manganese ore, manganese ore granulation, loaded manganese ore, and mixed manganese ore were used as fillers in a simulated permeable reactive barrier (PRB) to test their feasibility for remediating arsenic-contaminated groundwater. The experiment determined that the four materials were capable of achieving removal rates >90%. The Dengjiatang area of Chenzhou City, Hunan Province was then selected for construction of a PRB pilot project. Studies showed that the arsenic content of the effluent at each monitoring point was below 10 µg/L indicating all four fillers were removing arsenic and can be used in full-scale remediation. In addition, ferric chloride and cement were used to stabilize the arsenic-containing waste residue. Leaching test results indicated that the arsenic concentration after curing was only 1 µg/L.
Environmental Technology [Published online 11 November 2019 prior to print]
Natural manganese ore, manganese ore granulation, loaded manganese ore, and mixed manganese ore were used as fillers in a simulated permeable reactive barrier (PRB) to test their feasibility for remediating arsenic-contaminated groundwater. The experiment determined that the four materials were capable of achieving removal rates >90%. The Dengjiatang area of Chenzhou City, Hunan Province was then selected for construction of a PRB pilot project. Studies showed that the arsenic content of the effluent at each monitoring point was below 10 µg/L indicating all four fillers were removing arsenic and can be used in full-scale remediation. In addition, ferric chloride and cement were used to stabilize the arsenic-containing waste residue. Leaching test results indicated that the arsenic concentration after curing was only 1 µg/L.
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