| Preventive methods |
-Remove and/or isolate sulfur. |
| -Remove oxygen from water sealing. |
| -Remove oxygen from dry sealing. |
| -Alkaline additives. |
| -Bactericides. |
| Containing methods |
-Avoid water flow. |
| -Permeable reactive barriers (PRB) of reactive material located in the path of contaminants, considered as a passive treatment method. |
| -Disposal in containment structure. |
| Remediation and treatment techniques |
-Neutralization and precipitation of hydroxides and sulphur. |
| -Separation by flocculation and flotation or lamellar settler. |
| -Wetlands. |
| -Remove sulfate and Mn+2 ions through co-precipitation. |
