School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China.
J Environ Manage. 2009 Nov-Dec;91(2):423-31. doi: 10.1016/j.jenvman.2009.09.012. Epub 2009 Sep 25.
Epichlorohydrin-dimethylamine polymers with different intrinsic viscosity (eta) and cationicity (tau) were synthesized. The flocculation performance and mechanism of these polymers in the removal of the reactive and disperse dyes from synthetic wastewater was investigated in terms of flocculation dynamics and color removal efficiency. The polymer flocculation efficiency was compared with that of polyaluminum chloride (PAC) and a composite flocculant based on polyaluminum chloride-epichlorohydrin-dimethylamine polyamine. The results showed that epichlorohydrin-dimethylamine polymer was effective over a pH range of 2-10 for the reactive and disperse dye removal (Reactive Brilliant Red and Disperse Yellow dyes). Epichlorohydrin-dimethylamine polymer with the highest eta and tau gave the best reactive dye removal efficiency, and its adsorption-bridging and electric neutralization ability played important roles in the flocculation process. The higher the eta viscosity of the epichlorohydrin-dimethylamine polymer, the better the flocculation performance of epichlorohydrin-dimethylamine polyamine, and stronger adsorption-bridging ability was obtained for removing the disperse dye from dyeing wastewaters. Epichlorohydrin-dimethylamine polymer achieved better decolorization performance when used together with PAC.
合成了具有不同特性粘度（η）和阳离子度（τ）的表氯醇-二甲胺聚合物。从絮凝动力学和去除效率两个方面研究了这些聚合物在去除活性和分散染料中的絮凝性能和作用机制。将聚合物的絮凝效率与聚合氯化铝（PAC）和基于聚合氯化铝-表氯醇-二甲胺多胺的复合絮凝剂进行了比较。结果表明，表氯醇-二甲胺聚合物在 pH 值为 2-10 的范围内对活性和分散染料的去除（活性艳红和分散黄染料）均有效。η和τ值最高的表氯醇-二甲胺聚合物对活性染料的去除效率最高，其吸附架桥和电中和能力在絮凝过程中发挥了重要作用。表氯醇-二甲胺聚合物的η粘度越高，其絮凝性能越好，对染料废水的分散染料去除具有更强的吸附架桥能力。表氯醇-二甲胺聚合物与 PAC 一起使用时，具有更好的脱色性能。
