| Domestic and foreign technology through research and comparison, that "by Waste" of ideas, select the "neutralization mortar and nickel-copper tailings smelter acid mixed progressively acidic waste water treatment system-the cure-coagulation treatment "process. Through multiple sets of small scale and pilot testing to determine the most appropriate solution acidic wastewater treatment. Mortar tailings discharged after treatment tailings; study the effects of water on the tailings library vadose zone and groundwater. |