化学沉淀法处理高盐废水中5种金属离子的脱除工艺研究  

Study on Removal of Five MetalIons From High Salt Wastewater by Chemical Precipitation

作　　者：李建荣 孙艺萍 罗桂林[1] 陈兵兵[1] 郭广君 LI Jian-rong;SUN Yi-ping;LUO Gui-lin;CHEN Bing-bing;GUO Guang-jun(School of Science and Chemical Engineering,Ningxia Institute of Technology,Ningxia Shizuishan 753000;Ningxia Food Safety Association,Ningxia Yinchuan 750001,China)

机构地区：[1]宁夏理工学院理学与化学工程学院,宁夏石嘴山753000 [2]宁夏食品安全协会,宁夏银川750001

出　　处：《广州化工》2023年第14期120-123,共4页GuangZhou Chemical Industry

基　　金：宁夏自然科学基金(No:2022AAC03350)。

摘　　要：研究了pH调节处理重金属盐废液的方法,铬废液,铜废液、银废液、铜废液、锰废液和铅废液五种重金属盐废液在不同pH条件下对沉降效果和去除率的影响,研究表明:铬离子最佳脱除工艺为pH=8,脱除率为96.9%,铜最佳脱除工艺为pH=6,脱除率为93.8%,银最佳脱除工艺为pH=8,脱除率为80.4%,铅最佳脱除工艺为pH=8,脱除率为89.2%,其中锰离子对pH的变化去除现象不明显,脱除率为46.7%。The method of pH adjustment was studied to treat heavy metal salt waste liquid.The effects of chromium waste liquid,copper waste liquid,silver waste liquid,copper waste liquid,manganese waste liquid and lead waste liquid on the sedimentation effect and removal rate under different pH conditions were studied.The results showed that the best removal process of chromium ion was as follow:pH=8,the removal rate was 96.9%,the best removal process of copper was as follow:pH=6,the removal rate was 93.8%,the best removal process of silver was as follow:pH=8,the removal rate was 80.4%.The optimum removal process of lead was as follow:pH=8,and the removal rate was 89.2%,in which manganese ion had no obvious effect on the removal of pH,and the removal rate was 46.7%.

关 键 词：高盐废水 沉淀法 重金属 脱除 

分 类 号：O622.6[理学—有机化学]