Experimental Research on Application of Tailings Mortar for Treatment of Copper-Nickel Acid Wastewater

Abstract:

The disposal of acid wastewater generated by a copper-nickel smelting enterprise by using abandoned tailings mortar combined with sulfide precipitation and coagulation indicated that this method has demonstrated good results: the effluent can acheive “Emmission standard of pollutants for copper, nickel, cobalt industry” (GB 25476-2010); the heavy metals in the sediment is not apt to experience dissolution, thus less possible for secondary pollution of soil and groundwater. The optimal combination conditions of this process for sludge/wastewater mass ratio is 14:1; sodium sulfide’s dosing is 20 ml, reaction time is 20 min; FeSO4 and acid waste water volum ratio is 0.05, the reaction time is 30 min.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 218-224
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.218
• Online since: January 2013
• Authors: Bo Yu Song, Lian Sheng He, Bei Dou Xi, Wei Xiong Guan, Rui Meng
• Keywords: Coagulation, Copper-Nickel Acid Wastewater, Leaching Toxicity, Sulfide Precipitation, Tailings Mortar

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