浮选废水中共存离子对臭氧氧化苯胺黑药的影响研究  

Influence of Coexisted Ions in Flotation Wastewater on the Ozonation Aniline Aerofloat

作　　者：王亮华 许伟航 傅平丰[1] 郭学辉 李根 徐承焱[1] WANG Lianghua;XU Weihang;FU Pingfeng;GUO Xuehui;LI Gen;XU Chengyan(School of Civil and Resource Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District 100083, Beijing, China;514 Brigade of North China Geological Exploration Bureau, 067000, Chengde, Hebei, China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]华北地质勘查局五一四地质大队,河北承徳067000

出　　处：《矿产保护与利用》2021年第1期1-8,共8页Conservation and Utilization of Mineral Resources

基　　金：国家科学自然基金项目(51674017);中央高校基本科研业务费专项资金资助项目(FRF-MP-2021);河北省重点研发计划节能环保与科技治霾项目(18274217D)。

摘　　要：浮选废水中残留有机药剂与各类离子共存,共存离子对臭氧氧化有机药剂有促进或抑制作用,考察了共存离子对臭氧氧化苯胺黑药效率和矿化行为的影响。结果表明,共存阴离子对臭氧氧化苯胺黑药的抑制作用顺序为:CO_(3)^(2-)>S^(2-)>HCO_(3)^(-)>PO_(4)^(3-),此4种阴离子还可降低苯胺黑药的矿化率,但Cl^(-)和SO_(4)^(2-)没有明显的抑制作用;共存金属阳离子对臭氧氧化苯胺黑药的增强作用顺序为:Fe^(3+)>Cu^(2+)>Pb^(2+)>Ca^(2+)≈Mg^(2+)>Zn^(2+),金属阳离子均能提高苯胺黑药的矿化率,显示出金属离子的催化臭氧氧化性能,而以Fe^(3+)的催化能力最强。Fe^(3+)/O_(3)体系降解苯胺黑药60 min后的有机中间产物种类比单一臭氧氧化少,表明Fe^(3+)的催化作用能强化有机中间产物的再氧化,使苯胺黑药降解过程更为彻底。In flotation wastewater,the residual organic reagents usually coexist with various ions,which can promote or inhibit the ozonation of organic reagents.The effects of coexisting ions on remo FRF-MP-2021val efficiencies of aniline aerofloat(AAF)and its mineralization by the ozonation were investigated.The results indicated that the inhibition order of coexisting anions for the ozonation of AAF was as follows:CO_(3)^(2-)>S^(2-)>HCO_(3)^(-)>PO_(4)^(3-).These four anions could also reduce the mineralization rate of AAF,but Cl^(-)and SO_(4)^(2-)had no obvious inhibitory effect.The enhancement order of coexisting metallic cations for the ozonation of AAF was as follows:Fe^(3+)>Cu^(2+)>Pb^(2+)>Ca^(2+)≈Mg^(2+)>Zn^(2+).All of metallic cations could increase the mineralization rate of AAF,which showed the catalytic ozonation capacity of metallic cations.Among them,Fe^(3+)achieved the highest catalytic capacity.The kinds of organic byproducts in the Fe^(3+)/O_(3)were much less than that in sole O_(3)after 60 min degradation of AAF.The results indicated that the catalytic ozonation capacity of Fe^(3+)could enhance further oxidation of byproducts,leading to more complete degradation of AAF collector.

关 键 词：浮选废水 苯胺黑药 共存离子 臭氧氧化 金属离子 

分 类 号：X751[环境科学与工程—环境工程]