【作者】 盛雪芹；

【导师】 丁永生；

【作者基本信息】 大连海事大学 ， 环境科学， 2003， 硕士

【摘要】 用于废水处理的天然改性有机高分子絮凝剂具有无毒、易于生物降解、无二次污染、原料来源广、价格低等优点，近年来得到重视和发展应用。本课题——玉米芯改性絮凝剂——正是出于这种考虑提出的，该课题在国际上尚属罕见。论文中介绍了以纯天然材料玉米芯为母体，以氯乙酸作为阴离子醚化剂，以3—氯—2羟丙基三甲基氯化铵(自制)作为阳离子醚化剂，合成了阴、阳两种离子型改性高分子絮凝剂，并对这两种絮凝剂的性能进行了研究。通过正交实验选择最佳条件。絮凝实验表明：阴离子型絮凝剂(简称ANPFC)与六水合氯化铝复合使用，对高岭土体系有很好的絮凝效果；在弱碱性条件下，ANPFC对含铅废水有很好的絮凝作用。絮凝实验还表明，阳离子型高分子絮凝剂(简称CNPFC)对高岭土悬浊液体系有很好的絮凝性能，其絮凝效果优于六水合氯化铝，并用它对粘土污水体系进行处理，表明CNPFC具有良好的抗干扰能力。应该说明的是，因为笔者理论基础还不够深厚，而且是初次涉及此领域，不免在理论理解上会有偏颇，而且在实验方法上仍需继续改进。更多还原

【Abstract】 Natural polymer flocculant is normally used to treat waste water avoiding poisonous effect, and it is easy to be bio-degraded. The resources could be available easily and low cost. The project of corn core modified flocculant is raised from this consideration. As far as I know, this idea is an original conception in the world. An anionic natural polymer flocculant(ANPFC) and a cationic natural polymer flocculant (CNPFC) were introduced in this work. Both of them were prepared by reacting anionic and cationic reagent, respectively, with the parent corn-core powder. The optimal preparation condition was investigated by experiment. The flocculating properties of ANPFC and CNPFC were studied using a turbid kaolin solution. The result shows that CNPFC is suitable for the kaolin system, while ANPFC is not suitable for it. But we found that ANPFC is fit for the treatment of Pb2+ in waste water. Further the intermixture of ANPFC and inorganic flocculant (aluminium chloride) has surprisingly turbidity removal efficiency. And the experiment shows that CNPFC has good turbidity removal efficiency and its performance is superior to that of inorganic flocculant (aluminium chloride). In practical application, CNPFC presented good anti-disturbance ability to clay suspension system. Surely there is still something to be unproved because author initially pursued the study in this field for only a short time.更多还原