脱色絮凝剂DFA的合成及脱色性能研究  

Research on Synthesis of DFA Decolorisation Flocculant and Its Decolorisation Properties

作　　者：余学军[1] 孙希孟[2] 徐丹[1] 董学亮[1] 刘明[1] 赵永德[1] 

机构地区：[1]河南省精细化工重点实验室,河南郑州450003 [2]河南大学化学化工学院

出　　处：《河南化工》2003年第5期16-19,共4页Henan Chemical Industry

摘　　要：以双氰胺、甲醛为主要原料 ,通过加入一定的助剂及催化剂 ,合成一种具有广泛脱色效果的絮凝剂DFA ,并表征其结构 ,研究其分子量、电荷密度等对大多数染料、尤其是活性、酸性染料的脱色效果影响。将本产品DFA与其它脱色絮凝剂进行脱色效果比较 ,结果表明 ,絮凝剂DFA在絮凝速度、脱色率两方面均有明显提高。同时对工业印染废水、印花废水的脱色、去除COD具有很好效果。Use dicyandimide (DCD) and formaldehyde as raw materials, DFA decolorisation flocculant is synthesized by adding ammonium chloride as catalyst. The structure is characterized. The effect of molecule weight and electric charge density to the decolorisation performance of majority of dyes, especially of active and acidic dyes are studied. Compared with other decolorisation flocculant , DFA shows higher decolorisation speed and higher rate of decolorisation.Meantime it has good performance in waste water treatment of textile printing and dying.

关 键 词：脱色 絮凝剂 

分 类 号：TQ314.253[化学工程—高聚物工业]