印制板行业水污染中铜的困扰

这是一篇环保论文。叙述印制板行业目前执行的水污染物排放的国家和地方标准，污水处理中铜为达到国家二级标准（1．0mg／L）和一级标准（0．5mg／L）的困扰。叙述铜对人体和动植物的毒害情况。世界各国污水排放铜的标准。提出了改变这种状况的建议。

Perplexity of Copper in Waste Water Control of PCB Indutry

This thesis is about environment protection. It narrates the National and local standards being implemented at present by PCB industry about waste water control and the perplexity to achieve the national standard class Ⅰ 0.5mg/L and class Ⅱ1.0mg/L about copper content during waste water treatment.Meanwhile it specifies the damage of copper content to human body and propagation and the copper content standard in waste water control of the world and also raises some advice and suggestions for changing the status.