那位大侠能帮我翻译一篇英文文献？？（科技文献）

kmfreezhong

Purification of metal plating rinse waters with chelating ion exchangers

Abstract
  A wide range of chelating ion exchangers was tested for their abilities to remove Zn, Ni, Cu and Cd from solutions simulating waste effluents from the metal-plating industry . The task was to reduce metal dicharges to the environment so that metal-plating shops could keep up with the modern, more stringent regulations of waste effluents. The resins were tested by batch and mini-column experiments. Decontamination factors (DFs) as high as 700 and capacities up to 3.0 meq/mL were measured at the 5% breakthrough (BT) point in mini-column tests. Complexing agents, especially cyanide, considerably reduced the performance of the resins with only a few exceptions. Ammonium seemed to improve the ion-exchange performance of some chelating resins and capacities higher than the theoretical values, given by the manufacturer, were measured. Comparative experiments between chelating, strong acid and weak acid ion-exchange resins showed that the advantage of chelating exchangers over strong and weak acid exchangers is a very low metal BT level, even as low as 2μg/L , which is very important, especially in the end-of-pipe polishing.

用鏊化离子交换器对金属电镀废水的净化
摘要：
各式各样的鏊化离子交换器被用来测试排除模拟溶液中锌，铬，铜，镍的能力，此溶液是模拟金属电镀工业中排放的污水。其主要任务是减少排放到环境中的金属量，使得电镀厂能适应现代化的，更为严厉的污水排放标准。交换树脂通过批量和小管实验被测试。在小管实验中，经测量，在5%的滤过度时，能达到高达700的纯化系数和3.0MEG/ML的纯化能力。除了某些特例外，混合剂，特别是氰化物，能显著减少了树脂的作用。经制造商的测定，铵能改善一些鏊和树脂的离子交换作用，使之大大高于理论值。通过对鏊和、强酸、弱酸树脂的比较实验显示，鏊和型交换器对强酸、弱酸型的优势在于非常低的BT水平，甚至低达2μg/L，而这一点至关重要，特别是在末管修饰中。
key words:略（这总不用翻了吧）