【摘要】 研究了高电荷密度聚胺单一体系、双元体系以及三元体系对废纸浆溶解和胶体物质(DCS)的控制效果和机理。结果表明,PA/PAC(HCS)/CPAM三元体系对DCS的控制效果最好,PA/CPAM双元体系次之,PA单一体系最差;PA/HCS/CPAM三元体系在对浆料的Zeta电位和滤水性能的影响以及对DCS的浊度和CODCr去除方面好于PA/PAC/CPAM三元体系,但后者在降低DCS阳离子需求量方面好于前者。PA体系的作用机理主要包括电性中和、补丁、架桥絮凝以及氢键结合理论。PA/PAC(HCS)/CPAM三元体系各助剂间有很好的协同作用效果,证明了此体系中阳离子高聚物与浆料中的阴离子组分之间的反应不是一对一的关系。更多还原

【Abstract】 In the paper, the effects of single, dual and triple systems of high charge density polyamine on dissolved and colloidal substances (DCS) control of recycled newspaper pulp were studied. The single system was only PA with high charge density, the dual system was PA/CPAM, two triple systems were PA/PAC/CPAM and PA/HCS/CPAM. The results showed that the triple system has the best DCS control effects, and the DCS control effect of dual system is better than the that of the single system. Compared with the PA/PAC/CPAM system, PA/HCS/CPAM system has better effect on the Zeta potential, drainage property of the pulp, the turbidity of the DCS and CODCr removal. But the PA/PAC/CPAM system has better effect on cationic demand reduction. The function mechanism of the PA system mainly includes the charge neutralization, charge patch, bridging flocculation and the hydrogen bonding theories. The results showed that the components in the triple system have very good synergistic effect, the reaction between cationic polymers and anionic components in stock is not one to one.更多还原