不同交联剂制备的环氧氯丙烷-二甲胺聚合物的结构及脱色性能  

The structure of epichlorohydrin-dimethylamine polymer flocculants with different modifying agents and their properties for decoloration of wastewater

作　　者：高宝玉[1] 孙逊[1] 岳钦艳[1] 张栋华[1] 卢磊[1] 王晓娜[1] 王燕[1] 

机构地区：[1]山东大学环境科学与工程学院,济南250100

出　　处：《环境科学学报》2006年第12期1977-1982,共6页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.50578089)~~

摘　　要：以环氧氯丙烷和二甲胺为原料,加入不同的胺类交联剂(乙二胺、二乙烯三胺和三乙烯四胺)合成出一系列环氧氯丙烷-二甲胺聚合物(EPI-DMA).研究了交联剂及用量对产品特性的影响;利用红外光谱(IR)和电子透射电镜(TEM)等现代分析仪器研究了EPI-DMA的结构及在水中的聚集形态;并通过烧杯实验研究了EPI-DMA对染料模拟废水和实际印染废水的处理效果.结果表明,交联剂的加入使EPI-DMA的粘度和阳离子度发生变化;不同交联剂制备的EPI-DMA的IR谱图相差不大,但在水溶液中的结构形貌不相同;EPI-DMA处理模拟活性艳红废水时以电中和和吸附架桥为作用机理,在处理还原大红废水时以电中和作用为主;在用EPI-DMA处理实际废水时脱色率和COD的去除率分别可达80%和60%.Flocculants epichlorohydrin-dimethylamine polymers （EPI-DMA） were synthesized by polycondensation of dimethylamine and epichlorohydrin with modifying agents including 1,2-Diaminoethane, diethylenetriamine and triethylenetetramine. The influences of the amount of modifying agents on the characteristics of EPI-DMA were investigated. IR and TEM were used to test the structure of EPI-DMA. EPI-DMA floceulants were also used for decoloring wastewater. The results showed that the addition of modifying agents changed the viscosity and the cationic degree of EPI-DMA. The IR spectrums of EPI-DMA were analogical, but the morphologies of the floceulants were different. When treating activated red dye wastewater, EPI-DMA floceulants showed both charge neutralization and adsorption bridging functions, while for reductive red dye wastewater EPI-DMA performed mainly as charge neutralization ; The experimental results for treating raw wastewater showed that the decolorization rate and CODCr, removal rate could reach 80% and 60% respectively.

关 键 词：环氧氯丙烷-二甲胺聚合物(EPI-DMA) 交联剂 脱色 絮凝机理 

分 类 号：X703.5[环境科学与工程—环境工程]