用离子交换膜从不锈钢酸洗废水中去除镍铬试验研究  

Removal of Nickel and Chromium From Stainless Steel Pickling Wastewater Using Ion Exchange Membrane

作　　者：谢昀映 谈定生[1,2] 张学峰 李增辉 丁伟中[1,2] XIE Yunying;TAN Dingsheng;ZHANG Xuefeng;LI Zenghui;DING Weizhong(School of Materials Science and Engineering,Shanghai University, Shanghai 200444,China;State Key Laboratory of Advanced Special Steel,Shanghai University, Shanghai 200444,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室,上海200444

出　　处：《湿法冶金》2018年第6期493-496,共4页Hydrometallurgy of China

摘　　要：研究了以酒石酸钠为配合剂,采用离子交换膜电渗析法从不锈钢酸洗废水中去除重金属镍铬离子,考察了电渗析时间、阴极室酒石酸钠浓度和pH、极板间距、电流密度等因素对镍、铬离子去除率的影响。试验结果表明:采用双膜三室电渗析槽进行电渗析,以石墨板为阳极、不锈钢板为阴极,在极板间距15cm、阴极室酒石酸钠浓度0.24mol/L、初始电流密度273 A/m2条件下,电渗析12h后,废水中总铬离子质量浓度从150mg/L降至0.910mg/L,总镍质量浓度从100mg/L降低至0.326mg/L,处理后废水中镍铬离子质量浓度均符合《污水综合排放标准》(GB 8978—1996)的要求。The removal of nickel and chromium from stainless steel pickling wastewater using ion exchange membrane by electrodialysis using disodium tartrate as complexing agent was investigated.The effects of the electrodialysis time,disodium tartrate concentration and solution pH in the cathodic cell,distance between the electrodes and current density on removing of nickel and chromium were examined.The results show that using electrodialysis device with double membranes and three cells,the concentration of chromium and nickel can be decreased from 150 mg/L to 0.910 mg/L and 100 mg/L to 0.326 mg/L,respectively,under the conditions of the distance between the electrodes of 15 cm,initial current density of 273 A/m 2,electrodialysis time of 12 h,using graphite as anode and stainless steel as cathode.After treating,the concentration of nickel and chromium in the wastewater accords with the requirement of integrated wastewater discharge standard.

关 键 词：不锈钢酸洗废水 离子交换膜 电渗析 重金属离子 去除 

分 类 号：TF803.25[冶金工程—有色金属冶金] X703[环境科学与工程—环境工程]