电催化氧化处理高盐废水  

Electrocatalytic oxidation treatment of high-salt wastewater

作　　者：曹敏 曹迪 李诺 付国燕 刘苏宁 孙宁磊[1] CAO Min;CAO Di;LI Nuo;FU Guo-yan;LIU Su-ning;SUN Ning-lei

机构地区：[1]中国恩菲工程技术有限公司,北京100038

出　　处：《中国有色冶金》2021年第2期68-71,共4页China Nonferrous Metallurgy

摘　　要：针对电催化氧化技术处理含盐废水具有氧化能力强、设备简单、无二次污染等特点,本文采用不同材料的电催化阳极对湿法冶金产生的含有机物高盐废水处理情况进行了对比分析,结果表明:不同材料的阳极析氧过电位次序为Ti/Ta_(2)O_(5)-IrO_(2)电极>石墨电极>Ti/RuO_(2)-IrO_(2)电极;三种电极处理高盐废水的COD去除效率分别为62.0%,43.7%,49.6%;COD去除能耗分别为16.7、61.7及41.5 W·h/mg。处理后的废水虽仍含有一定浓度COD,但对后续硫酸钠蒸发结晶负面影响显著减小。Aiming at the characteristics of electrocatalytic oxidation technology in the treatment of salty wastewaterwith strong oxidation ability,simple equipment,and no secondary pollution,this article uses electrocatalytic anodesof different materials to compare and analyze the treatment of high-salt wastewater containing organic matter pro-duced by hydrometallurgy.The results show that the order of the anode oxygen evolution overpotential of differentmaterials is Ti/Ta_(2)O_(5)-IrO_(2) electrode>graphite electrode>Ti/RuO_(2)-IrO_(2) electrode;The COD removal efficienciesof the three electrodes for treating high-salt wastewater are 62.0%,43.7%,and 49.6%,and the COD removalenergy consumption are 16.7,61.7 and 41.5 W·h/mg.Although the treated wastewater still contains a certainconcentration of COD,the negative impact on the subsequent evaporative crystallization of sodium sulfate is signifi-cantly reduced.

关 键 词：高盐废水 电催化氧化 阳极极化曲线 析氧过电位 COD去除率 COD去除能耗 

分 类 号：X758[环境科学与工程—环境工程] TQ425[化学工程]