摘要
概述了无氰电镀工艺废水中络合重金属高效去除新技术研究进展,主要包括新型沉淀法(置换/螯合沉淀技术)、氧化还原破络法(重金属还原破络和配位剂氧化破络)及吸附法,重点介绍了各技术原理、对络合重金属的处理效果、技术瓶颈。指出无氰电镀废水中重金属的综合回收势在必行,低能耗/药耗的破络技术与吸附技术耦合工艺是未来重要的发展方向。
Technical advances in the efficient removal of heavy metal complex from cyanide-free electroplating effluent are presented.The main technical processes include new precipitation methods(replacement/chelation-precipitation),decomplexation by oxidation-reduction(decomplexation by heavy metal reduction and complex agent oxidation),and adsorption.Theories of each technique,treatment effects of heavy metal complex,as well as technical bottlenecks in the research were all explained.It is concluded that the comprehensive recovery of heavy metals from cyanide-free electroplating effluent is imperative,and the decomplexation process that is characterized by low energy and reagent consumption,together with adsorption process,is an important development trend in the future.
作者
凌晨
吴帅
李平海
李杰
于伟华
刘福强
LING Chen;WU Shuai;LI Ping⁃hai;LI Jie;YU Wei⁃hua;LIU Fu⁃qiang(College of Biology and Environment,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Nanjing Innovation Center for Environmental Protection,Nanjing 211106,Jiangsu,China;Nanjing Huachuang Research Institute of Environmental Technology Co Ltd,Nanjing 211106,Jiangsu,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2019年第6期92-96,100,共6页
Mining and Metallurgical Engineering
基金
江苏省科技支持基础研究青年项目(BK20170647)
国家自然科学基金(51708281)
关键词
电镀废水
废水处理
螯合沉淀
重金属
无氰电镀
络合物
氧化还原破络
吸附
electroplating effluent
effluent treatment
chelation precipitation
heavy metals
cyanide-free electroplating
complex
decomplexation by oxidation-reduction
adsorption
