| 摘要 |
PURPOSE:To remove effectively heavy metals in the acidic mine waste water contg. heavy metals by removing the heavy metals by allowing the waste water to contact with Mg(OH)2 and a chelate resin and then neutralizing. CONSTITUTION:Mg(OH)2 is added to acidic mine waste water contg. heavy metals. such as Cu, As, Fe, Zn, Mn, Cd, Pb, etc. to neutralize the waste water, and the pH is adjusted to 4.0-9.0. Then, the water is allowed to contact with chelate resin contg. 1-3mol functional group basing on 1mol heavy metal in the water to remove the heavy metals. Useful chelate resin is polystyrene, polyphenol resin, etc. having introduced functional chelate group such as imino diacetate group type, dithiocarbamate group type, polyamine group type, etc.
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