A large number of copper containing electronic wastes, such as waste circuit boards, micro etching solutions, etching solutions, copper nitrate, etc., if they cannot be treated in a reasonable manner, on the one hand, they will cause serious waste of resources; on the other hand, heavy metals will seep into the soil and water sources after being discharged, which will cause serious pollution and harm to the natural environment on which we live and our own health.

　　Turbulent electrowinning technology can avoid the defects of pyrotechnic technology such as high energy consumption and dioxin pollution, and has significant advantages in the field of comprehensive recycling of precious metals in electronic waste.