| 聚合铁的形态特征和凝聚-絮凝机理 |
| |
| 引用本文： | 常青,汤鸿霄.聚合铁的形态特征和凝聚-絮凝机理[J].环境科学学报,1985,5(2):185-194. |
| |
| 作者姓名： | 常青 汤鸿霄 |
| |
| 作者单位： | 中国科学院环境化学研究所，中国科学院环境化学研究所 兰州铁道学院 |
| |
| 摘 要： | 以部分中和法从0.3MFeCl_3溶液制作不同OH/Fe值的聚合铁,进行各种物理化学特征鉴定,推断其水解-聚合产物形态,并进行混凝效能实验.OH/Fe在0—0.4阶段,含有低聚物.对本实验体系有甚高混凝效能.OH/Fe>0.4后.生成高聚物而电荷降低,混凝效能略有下降.OH/Fe>1.5后.生成物趋向于溶胶和沉淀物,混凝效能明显降低.讨论了聚合铁在不同OH/Fe值的凝聚-絮凝作用机理.
|
CHARACTERIZATION AND COAGULATIONFLOCCULATION MECHANISM OF POLYMERIC IRON |
| |
| Chang Qing and Tang Hongxiao.CHARACTERIZATION AND COAGULATIONFLOCCULATION MECHANISM OF POLYMERIC IRON[J].Acta Scientiae Circumstantiae,1985,5(2):185-194. |
| |
| Authors: | Chang Qing and Tang Hongxiao |
| |
| Institution: | Institute of Environmental Chemistry, Academia Sinica and Institute of Environmental Chemistry, Academia Sinica |
| |
| Abstract: | Iron polymers of various OH/Fe ratio were made from 0.3M FeCl3 solution by partial neutralization. Physico-chemical characteristics were determined and jar tests conducted to identify the chemical species. When OH/Fe = 0-0.4, low polymers formed and coagulation efficiency was very high in the reference suspension used. When OH/ Fe>0.4, high polymers formed and their charging density reduced. The coagulation efficiency also reduced slightly. When OH/Fe>1.5, the products tended to be sols and precipitated. The dose used for clarification increased evidently. The coagulation-flocculation mechanism of iron polymers with various OH/Fe ratio were discussed on the basis of experimental results. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
| 点击此处可从《环境科学学报》下载免费的PDF全文 |
|
