Here, "waste electrolyte, zinc electrowinning" refers to the electrolyte used in the zinc electrolysis process which, due to long-term circulation, has accumulated impurities, decreased concentration, or degraded performance, thereby losing its original electrolytic function, or although not entirely devoid of utility, has been discarded. Its primary component is a zinc sulfate solution containing certain amounts of impurities such as iron, copper, cadmium, and chloride ions. Through collection, purification, concentration, or metal recovery processes, this type of waste electrolyte can serve as a pathway for the recovery and reuse of zinc and associated metals, and can be further utilized in acid production, chemical feedstock, or other recycling applications.