A plating wastewater treatment process for treating heavy metal ions in plating waste water using red mud which is industrial waste, straw which is agricultural waste, and sea water, specifically, Grinding the straw, stirring and mixing the crushed straw and the plating wastewater, setting the mass of the straw to be charged per liter of the plating wastewater to 40 to 50 g; The seawater and red mud were mixed by stirring, pH was adjusted to 8.5 to 9.5, and the filtrate was obtained by filtration after standing, and the mass of red mud charged per liter of sea water was set to 200 to 300 g; Mixing the mixed solution of step A and the filtrate of step B, mixing by ultrasonic vibration and allowing to stand, mixing again by ultrasonic vibration, standing and filtering; And adjusting the filtrate obtained in step C to pH 7. In the present invention, by substituting contaminated red mud and straw which is rural waste, it is possible to reduce the use of a large amount of chemical chemicals, effectively treat the wastewater of plating, and totally utilize red mud and straw , It will process waste with waste, reduce processing costs and efficiently protect the environment.
展开▼
