Abstract:
Nonferrous metals industry plays an important role in economic and social development, national defense science and technology industry, and the effective treatment of nonferrous metal mine dressing wastewater plays a crucial role in the stable and sustainable development of nonferrous metal industry. This paper introduces the sources, water quality characteristics and the main influence of the nonferrous metals processing of wastewater reuse, summarizes the advantages and disadvantages for teeating method, such as natural purification method, acid-base neutralization method, coagulation sedimentation method, adsorption method, chemical oxidation method, sulfide precipitation method, biological method and membrane separating method, etc. Among them, chemical oxidation method, adsorption method and membrane separating method, which can not produce secondary pollution, will become the key direction of the development of non-ferrous mineral processing wastewater treatment in the future. The practical application of the separation and reuse of the source, the reuse of the overflow water from the tailings pond and the reuse of the end treatment of the beneficiation wastewater in the production are further described. It is pointed out that the optimized coupling of various treatment technologies can further enhance the treatment effect and satisfies the reuse standard.