黄金科学技术
黃金科學技術
황금과학기술
Gold Science and Technology
2015年
4期
75-79
,共5页
氰化废水%硫酸锌%化学沉淀%电吸附
氰化廢水%硫痠鋅%化學沉澱%電吸附
청화폐수%류산자%화학침정%전흡부
cyanide wastewater%ZnSO4%chemical precipitation%electric adsorption
采用沉淀—电吸附联合工艺处理高铜高铁提金氰化废水，对处理过程的反应原理和工艺流程进行了系统的分析说明，同时对关键处理结果进行了讨论。研究表明，采用沉淀—电吸附联合工艺处理高浓度氰化提金废水是可行的。经 ZnSO4沉淀处理后，废水中 Fe2+、Cu2+及游离 CN-的沉淀率分别达到100%、85.89%和99.43%。电吸附处理后，废水中的 Cu2+、SCN-与游离 CN-的去除率分别为98.68%、43.60%和99.57%。经 X 射线衍射（XRD）分析表明，硫酸锌沉淀后的沉淀物主要由 Zn2[Fe（CN）6]、Zn（CN）2和 CuCN 组成，而电吸附处理后得到的沉淀物90%以上为 CuSCN，沉淀物及饱和阳极板可经综合处理回收氰化物与金属，同时废水可返回浸出系统循环利用。
採用沉澱—電吸附聯閤工藝處理高銅高鐵提金氰化廢水，對處理過程的反應原理和工藝流程進行瞭繫統的分析說明，同時對關鍵處理結果進行瞭討論。研究錶明，採用沉澱—電吸附聯閤工藝處理高濃度氰化提金廢水是可行的。經 ZnSO4沉澱處理後，廢水中 Fe2+、Cu2+及遊離 CN-的沉澱率分彆達到100%、85.89%和99.43%。電吸附處理後，廢水中的 Cu2+、SCN-與遊離 CN-的去除率分彆為98.68%、43.60%和99.57%。經 X 射線衍射（XRD）分析錶明，硫痠鋅沉澱後的沉澱物主要由 Zn2[Fe（CN）6]、Zn（CN）2和 CuCN 組成，而電吸附處理後得到的沉澱物90%以上為 CuSCN，沉澱物及飽和暘極闆可經綜閤處理迴收氰化物與金屬，同時廢水可返迴浸齣繫統循環利用。
채용침정—전흡부연합공예처리고동고철제금청화폐수，대처리과정적반응원리화공예류정진행료계통적분석설명，동시대관건처리결과진행료토론。연구표명，채용침정—전흡부연합공예처리고농도청화제금폐수시가행적。경 ZnSO4침정처리후，폐수중 Fe2+、Cu2+급유리 CN-적침정솔분별체도100%、85.89%화99.43%。전흡부처리후，폐수중적 Cu2+、SCN-여유리 CN-적거제솔분별위98.68%、43.60%화99.57%。경 X 사선연사（XRD）분석표명，류산자침정후적침정물주요유 Zn2[Fe（CN）6]、Zn（CN）2화 CuCN 조성，이전흡부처리후득도적침정물90%이상위 CuSCN，침정물급포화양겁판가경종합처리회수청화물여금속，동시폐수가반회침출계통순배이용。
Trea tment of gold mine wastewater with the characteristics of cyanide,high copper,iron by the chemical precipitation-electric adsorption combined technology,the analyzed and discussed were focused on the reaction principle,the technological process and the result of the reaction.Research shows that the method is viable to treatment wastewater containing high concentration of cyanide.After precipitation by ZnSO4,the precipitation rate of free cyanide,Fe and Cu in wastewater were 100%,85.89% and 99.43%,respectively.After advanced treatment by electric adsorption,the removal rates of Cu,thiocyanate,and free cyanide were 98.68%, 43.60% and 99.57%,respectively.The XRD analysis showed that the sediment from zinc sulfate precipitate mainly includes Zn2 [Fe(CN)6],Zn(CN)2 and CuCN,and the sediment from the electric adsorption is mainly CuSCN. Sediment and the anode plate after saturated adsorption can be comprehensive treatment and recovery of cyanide and metal,and the wastewater can be returned to the leaching system for recycling at the same time.
