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Batch experiments were carried out to assess the influence of organic substrate in SAPS using five different mine drainages. The mine drainages types were divided into two groups according to their acidity. Mushroom compost was used in the mine drainage remediation experiments as a substrate materials. The pH, TOC, and cation concentrations rapidly increased in all batch experiments after reaction. The ORP values decreased at below -300 mV after the 14 day. The dissolved Fe and S had decreased by ironand sulfate-reduction after 14 days. The dissolved Fe, Al, Cu, and Zn could be removed as precipitates of metal (hydro)oxides and sulfides at the experimental conditions. However, abundant sulfate remained in the SM mine drainage after remediation experiments. The SM mine was highly acidic and had high Fe concentration, initially. Therefore, the results indicated that the conventional design of an organic substrate layer in SAPS would have to be modified depending on the acidity of the mine drainage.

Application Method for SAPS Substrate Materials According to Mine Drainage Properties