废纸再生造纸
Recycled paper from waste paper
以上为机器翻译结果，长、整句建议使用 人工翻译 。
报道了自制和市售的几种阳离子聚丙烯酰胺对废纸再生造纸废水处理的研究过程。
The treating processes of papermaking wastewater by PDA prepared by our laboratory and some kinds of cationic polyacrylamide in the market are reported.
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