摘要
针对某冶炼厂产生的大量低浓度重金属废水,常规方法处理存在成本高、废渣二次污染等问题。试验采用常温中和铁氧体处理低浓度重金属废水,最佳工艺条件为:[Fe^(3+)]∶[Fe^(2+)]=2,pH=9,[Fe^(2+)]∶[Pb^(2+)、Cd^(2+)、As^(3+)、As^(5+)]=10,温度20℃,搅拌时间30 min,砷、镉、铅去除率分别为96.73%、97.56%、98.43%。
Problems of high cost and waste residue secondary pollution exist in conventional process which treated at numbers of low concentration of heavy metal wastewater in a smelting plant. By ambient temperature ferrite process, removal rate of As,Cd,Pb is 96.73% ,97.56% and 98.43% respectively on the best conditions of[ Fe^3+ ]: [ Fe^2+ ] for 2, pH for 9, [ Fe^2 + ] : [ Pb^2 + , Cd^2 + , As^3+ , As5+] for 10, temperature for 20 ℃ and mixing time for 30 min.
出处
《湖南有色金属》
CAS
2015年第6期67-68,共2页
Hunan Nonferrous Metals
关键词
常温铁氧体
重金属废水
去除率
ambient temperature ferrite process
heavy metal wastewater
removal rate