【作者】 彭添兴；

【导师】 陈少平；

【作者基本信息】 福建师范大学 ， 高分子化学与物理， 2004， 硕士

【摘要】 废纸作为造纸工业的原料，可直接减少木材的利用，保护森林资源。但在废纸的回收利用过程中会产生大量的废水，而废纸脱墨废水的成分复杂，且悬浮物含量、色度、浊度等指标均较高，难处理。本研究探讨了在废纸脱墨废水处理中聚丙烯酰胺(PAM)、阳离子型聚N-乙烯基甲酰胺(C-PNVF)系列高分子絮凝剂的电荷、分子量对脱色去浊性能的影响，找出了它们的作用规律，为进一步开发适合废纸脱墨废水的高分子絮凝剂提供理论依据。研究结果表明：(1)pH值对废水的色度、浊度以及电荷性质有很大的影响，从而对絮凝剂的絮凝性能产生影响；(2)C-PNVF在酸性条件下，电荷密度越低絮凝效果越好：中、碱性条件下，则相反；(3)分子量对各种电荷性质的PAM的絮凝性能的影响规律各不相同。更多还原

【Abstract】 The fact that waste paper was used as raw material in paper industry can help to reduce the use of wood pulp and revitalize forest .However, there is a great deal of waste water come into being in the process of reclaiming of waste paper.The compositions of deinking waste water are complex, and such indexs as solid suspension, colourity and turbidity are all high and difficult to be dealed with. Effect of charge and molecular on flocculent performance of Polyacrylamide(PAM) and cationic Polyvinylformamide(C-PNVF) in deinking waste water are studied in the article to find out flocculent rules and develop the new flocculant adapted to deinking waste water.The results showed that:a)pH makes a full impact on colourity,turbidity and charge character, then affects flocculent performance of flocculant;b)Under the condition of acidity, the lower of charge density of C-PNVF is ,the higher of removing rate is.but it shows opposite results under the condition of neutrality and alkalinity;c)the rules of flocculent performance of all kinds of PAM affected by molecular are various.更多还原