Electroplating salt-containing wastewater passes through a collection tank and enters evaporation after passing through a pretreatment system to separate out crystalline salt. Crystalline salt and mother liquor are separated from solid and liquid by a centrifuge, and the mother liquor continues to return to the evaporator to continue evaporation and concentration. The evaporated condensed water is transported to the biochemical pool for centralized treatment to meet the requirement of zero emission.
