This project is located in Yuanqu County, Shanxi Province. The treatment object is cleaning wastewater generated during the deep processing of copper materials. The treatment scale is 200m3/d; the wastewater is highly acidic, and the main pollutants in the wastewater are sulfuric acid, copper ions, iron ions, etc.; the "medium After the combined process of "+ sedimentation + filtration", it meets the recycling requirements and can be used for production line cleaning.