高速电镀银漂洗水的近零排放技术  

A treatmenting processof rinsing water with near nearly-zero emission discharge for rinsing water from the high-speed silver-plating process

作　　者：苏远波[1,2,3,4] 李清彪[1,2,3,4] 王远鹏[2,3,4] 洪金庆[2,3,4] 

机构地区：[1]厦门大学海洋与环境学院环境科学研究中心,福建厦门361005 [2]厦门大学化学化工学院化学工程与生物工程系,福建厦门361005 [3]厦门大学醇醚酯化工清洁生产国家工程实验室,福建厦门361005 [4]福建省化学生物学省重点实验室,福建厦门361005

出　　处：《现代化工》2009年第4期43-46,48,共5页Modern Chemical Industry

基　　金：厦门市科技局资助项目(3502Z20071097)

摘　　要：利用逆流漂洗和逆流蒸发联合装置实现高速电镀银漂洗水的近零排放。该联合装置中逆流漂洗由三级漂洗槽组成,而逆流蒸发包含电镀槽、填料蒸发器、过滤机和风机等。实际镀液实验表明,在保持一定的液位水平和第三槽漂洗水的浓度小于20 mg/L的前提下,系统运行稳定,没有向外界排放含银漂洗废水,新鲜漂洗水用量比原来节省超过90%,实现电镀银过程的节水高效和漂洗水近零排放。A device combining counter-flow rinse with counter-flow evaporation is used to carry out near zero emission of rinsing water in the high-speed silver-plating process. The device contains two parts, i. e. counter-flow rinse part and counter- flow evaporation part which is made up of an electroplating tank, an evaporator packed plastic padding, a filter, and an exhaust fan. The tests with real wastewater show that when the volume of electrolyte keeps constant and the final silver concentration in the rinsing water is less than 20 mg/L, near zero emission from rinsing water can be attained in the process combining the counter-flow rinse with the counter-flow evaporation and the system can save 90% of fresh millipore water compared to the original one.

关 键 词：高速电镀 电镀银 漂洗水 近零排放 

分 类 号：X703.1[环境科学与工程—环境工程]