Assessment of sulphate and iron reduction rates during reactor start-up for passive anaerobic co-treatment of acid mine drainage and sewage

摘要: Passive co-treatment of municipal wastewater (MWW) and acid mine drainage (AMD) has shown promise over the past decade for simultaneous remediation these widespread waste streams. To investigate efficiency rates iron sulphate reduction during start-up anaerobic using a novel, process-based kinetic modeling approach, twenty-four replicate 1L-cubitainers containing 5:2 MWW:AMD mixture Kaldnes plastic media were sealed, incubated sacrificially sampled key water quality parameters 30 days. Alkalinity generation, pH increase efficient removal iron, aluminum phosphate observed. The observed relatively slow, sulphate, organic carbon nitrogen was modest incomplete. Overall, results confirm efficacy AMD-MWW pollutants, but also highlight factors that may limit this emerging technology. Supplementary material: fitted model used to describe behaviour Fe, H 2 S SO 4 2− are available at https://doi.org/10.6084/m9.figshare.c.3841279