一种重金属捕集剂对化学镀镍废水处理效果研究  

Research on the treatment effect of electroless nickel plating wastewater with a heavy metal chelating agent

作　　者：李杨 康旭 孟庆杰 汤显彪 张佳宝 LI Yang;KANG Xu;MENG Qing-jie;TANG Xian-biao;ZHANG Jia-bao(Shenzhen Shenshui Water Resources Consulting Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳市深水水务咨询有限公司,广东深圳518000

出　　处：《化学工程师》2024年第10期44-47,85,共5页Chemical Engineer

基　　金：深圳市科技研发资金(KCXFZ20230731093259010)。

摘　　要：利用五乙烯六胺和CS_(2)为主要原料合成了一种多硫代氨基甲酸盐类重金属捕集剂PDTC,并将其应用于化学镀镍废水的处理,考察了PDTC投加量、搅拌反应时间、废水pH值、聚合氯化铝投加量等因素对PDTC处理含Ni^(2+)、Zn^(2+)废水效果的影响,并与市售重金属捕集剂TMT-15进行对比实验。结果表明,在PDTC投加量为240mg·L^(-1)、pH值为8、反应时间为80s、聚合氯化铝投加量为120mg·L^(-1)的条件下,处理后废水中残留Ni^(2+)和Zn^(2+)浓度分别为0.09g·L^(-1)和0.76mg·L^(-1),均满足广东省地方标准DB44/T 1597-2015电镀水污染物排放标准要求,且在相同实验条件下,相比于TMT-15,PDTC对Ni^(2+)、Zn^(2+)具有更好的去除效果。The heavy metal chelating agent PDTC was synthesized by using N1,N1'-(ethane-1,2-diyl)bis(N2-(2-aMinoethyl)ethane-1,2-diaMine)and carbon disulfide as the main raw materials,and applied to the treatment of electroless nickel plating wastewater.The influences of the PDTC dosage,stirring reaction time,pH of the wastewater and the dosage of polymerized alumina chloride on the effect of the treatment of Ni^(2+)and Zn^(2+)wastewater were investigated,and a comparative study was carried out with the commercially available heavy metal chelating agent TMT-15.The experimental results showed that,when the dosage of PDTC was 240mg·L^(-1),pH value was 8.0,reaction time was 80s,and dosage of polymerized aluminum chloride was 120mg·L^(-1),the residual Ni^(2+)and Zn^(2+)concentrations in the wastewater were 0.09mg·L^(-1)and 0.76mg·L^(-1),respectively,which met the emission limits of electroplating water pollutants of the local standard of Guangdong Province(DB44/T 1597-2015),and under the same experimental conditions,compared with TMT-15,PDTC has a better removal effect on Ni^(2+)and Zn^(2+).

关 键 词：重金属捕集剂 化学镀镍 鳌合沉淀 去除率 

分 类 号：X703[环境科学与工程—环境工程]