School of Environmental Science and Engineering, Shandong University, No 27 Shanda South Road, Jinan 250100, PR China. baoyugao
J Hazard Mater. 2011 Mar 15;187(1-3):413-20. doi: 10.1016/j.jhazmat.2011.01.044. Epub 2011 Jan 18.
In this paper, a new composite inorganic-organic coagulant (PFC-EPI-DMA) was prepared by polyferric chloride (PFC) and epichlorohydrin-dimethylamine (EPI-DMA) under a given EPI-DMA/Fe and OH/Fe molar ratio. In comparison with PFC, the Fe (III) species and zeta potential of PFC-EPI-DMA were measured. Then their coagulation performance and coagulation kinetics for treating synthetic reactive dying wastewater were investigated. The results showed that the content of Fe(a) and Fe(b) in PFC-EPI-DMA and PFC coagulants decreased with increasing aging period. Compared to PFC, PFC-EPI-DMA had higher content of Fe(a) but lower content of Fe(b) and Fe(c). The zeta potentials of two coagulants decreased with increasing aging period within all tested pH range. For the treatment of reactive red 24, the color removal efficiency treated by PFC-EPI-DMA decreased, while that treated by PFC remained almost constant with increasing aging period. However, the color removal efficiencies of reactive blue 14 treated by two coagulants both decreased with increasing aging period. The results of floc aggregation process confirmed that with increasing aging period, the orders of floc growth rate, ratio and TWV treated by two coagulants were complicated.
在本文中，通过在特定的 EPI-DMA/Fe 和 OH/Fe 摩尔比下，用聚氯化铁（PFC）和表氯醇二甲胺（EPI-DMA）制备了一种新型的复合无机-有机混凝剂（PFC-EPI-DMA）。与 PFC 相比，测量了 PFC-EPI-DMA 和 PFC 混凝剂的 Fe（III）形态和 ζ 电位。然后研究了它们处理合成活性染色废水的混凝性能和混凝动力学。结果表明，PFC-EPI-DMA 和 PFC 混凝剂中 Fe(a)和 Fe(b)的含量随老化时间的增加而降低。与 PFC 相比，PFC-EPI-DMA 具有更高的 Fe(a)含量，但更低的 Fe(b)和 Fe(c)含量。在所有测试的 pH 范围内，两种混凝剂的 ζ 电位均随老化时间的增加而降低。对于活性红 24 的处理，PFC-EPI-DMA 处理的颜色去除效率降低，而 PFC 处理的颜色去除效率几乎保持不变，随着老化时间的增加而增加。然而，两种混凝剂处理的活性蓝 14 的颜色去除效率均随老化时间的增加而降低。絮体聚集过程的结果证实，随着老化时间的增加，两种混凝剂处理的絮体生长速率、比和 TWV 的顺序变得复杂。
