Electroplating sludge, a hazardous solid waste product of the electroplating industry, presents a serious environmental pollution risk. In this study, an environmentally friendly process for solidifying and recovering heavy metals from electroplating sludge using copper slag and spent cathode carbon is proposed. Combining the results of toxicity characteristic leaching procedure tests, thermodynamic analysis, chemical analysis, X-ray diffraction analysis, and electron probe microanalysis, the Cr, Ni, Cu, Fe, and F transformation mechanisms were first probed during vitrification. Under optimal experimental conditions, the Cr, Ni, and Cu recovery ratios reached 75.56 wt%, 98.41 wt%, and 99.25 wt%, and they increased by 40%, 5%, and 5%, respectively compared with the currently utilized technique. Moreover, the toxicity leaching results of the slag indicate that the Cr, F, and Cu are stable, while Ni is easily leached from the (Fe,Ni)(Fe,Cr)₂O₄ and alloy phases. Under the optimal metal recovery conditions, the leaching concentrations of Cr, Cu, F, and Ni were 0.57 mg/L, 4.45 mg/L, 1.52 mg/L, and 1.85 mg/L, respectively, which can be reused in other materials, minimizing the environmental risk. The electroplating sludge, copper slag, and spent cathode carbon co-treatment process achieves waste disposal with waste and significantly reduces electroplating sludge processing costs.

电镀污泥是电镀行业的一种有害固体废物，具有严重的环境污染风险。在这项研究中，提出了一种使用铜渣和废阴极碳从电镀污泥中固化和回收重金属的环保方法。结合毒性特征浸出程序测试，热力学分析，化学分析，X射线衍射分析和电子探针显微分析的结果，在玻璃化过程中首先探究了Cr，Ni，Cu，Fe和F的转化机理。在最佳实验条件下，Cr，Ni和Cu的回收率分别达到75.56 wt％，98.41 wt％和99.25 wt％，与当前使用的技术相比，分别提高了40％，5％和5％。而且，₂ O ₄和合金相。在最佳金属回收条件下，Cr，Cu，F和Ni的浸出浓度分别为0.57 mg / L，4.45 mg / L，1.52 mg / L和1.85 mg / L，可以在其他材料中重复使用。 ，将环境风险降到最低。电镀污泥，铜渣和废阴极碳的共同处理过程实现了废物与废物的处理，并显着降低了电镀污泥的处理成本。