But lignin becomes one of the main pollution sources, coming from waste water in the paper-making factory.
它是造纸厂排出的废液中的主要成分，是主要的水污染源之一。
This article analyses the treating actuality of paper mill waste water firstly, then discuss nowadaystreating processes and their characteristic of paper-making black and white liquid.
本文从造纸工业废水治理技术现状分析入手，讨论了目前用于处理造纸黑液和白水的主要处理工艺及其特点。
On the basis of this, we dis-cuss the new comprehensive utilization path of waste water in paper-making mill, especially black liquid.
在此基础上，提出了造纸工业废水尤其是造纸黑液综合利用的新途径。
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