| 摘要 |
Mine waste water is treated to remove both dissolved and particulate metal values by an improved process, the process comprising: A. Mixing with the mine waste water a sufficient amount of anionic polymer to combine with the dissolved and particulate metal values to form a polymer/metal particle complex, B. Mixing the polymer/metal particle complex of Step A with a source of ferric ions, e.g. ferric chloride, to form a ferric/polymer/metal particle complex, C. Mixing the ferric/polymer/metal particle complex of Step B with a source of hydroxyl ions, e.g. a solution of calcium oxide, to form a hydroxylated ferric/polymer/metal particle complex, D. Mixing sufficient flocculent, e.g. a polyacrylamide, with the complex of Step C to precipitate the complex, and E. Separating the slurry of Step D into a clean water effluent and a high density (e.g. >50% solids), low toxic sludge.
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