Abstract:The recovery methods and advantages and disadvantages of valuable metals in acid waste water are discussed, and the advantages and characteristics of chemical vulcanization technology are described in detail. After optimizing and improving the chemical sulfidation process, not only the valuable metal elements such as copper and zinc in acid wastewater can be recovered effectively, but also the recovery cost and the difficulty of wastewater treatment can be reduced, at the same time, the secondary pollution of hydrogen sulfide gas is avoided, and the maximum benefit of economic and environmental protection is realized, it can also be used in other Nonferrous metal mining and electroplating industries to promote scientific and technological progress.