印染废水高效脱色絮凝剂的合成及其脱色性能研究  

Synthesis of a high-efficiency decolorizing flocculant for printing and dyeing wastewater and its decoloration properties

作　　者：利锋[1] 方战强[2] 曾志勇[3] 叶伟莹[3] 聂俊军[3] 

机构地区：[1]嘉应学院化学系环境工程实验室,广东梅州514015 [2]华南师范大学环境科学研究所,广东广州510631 [3]华南师范大学化学系,广东广州510631

出　　处：《工业水处理》2005年第8期38-41,共4页Industrial Water Treatment

摘　　要：合成了改性甲醛-双氰胺系列脱色絮凝剂T5,该絮凝剂合成条件简单,成本较同系列的产品低,每吨为3400元左右。T5用于处理印染废水效果好,脱色率和CODCr去除率均较高,污泥体积小。T5与Al2(SO4)3复配使用效果更佳,脱色率达96.8%,CODCr去除率最高可达91.5%;出水CODCr和色度达国家一级排放标准。A modified dicyanodiamide - formaldehyde polymer T5 has been synthesized under simple conditions,and the cost of it, ￥3 400/t, is lower than the other dicyanodiamide - formaldehyde polymers. It works well while used to treat printing and dyeing wastewater, the decolourization rate and the elimination rate of CODCr are both high and the volume of sludge is small. Furthermore, it can do better when matched with Al2 （SO4）3, the decolourization rate is as high as 96.8%, the highest elimination rate of CODCr can reach 91.5% and the two key quotas CODCr and tone accord with national first grade discharge standards. A few T5 and A12（SO4）3 can obtain good results, for example, 100 mg/L T5 and 167 mg/L Al2（SO4）3 accompanying with the decolourization rate of 88.3%. The treatment cost is within ￥0.50/m^3 due to low quantity of flocculant and cheap cost of T5。

关 键 词：印染废水 改性甲醛-双氰胺 脱色 

分 类 号：X788[环境科学与工程—环境工程]