Abstract:

Cationic guar gum-acrylamide copolymer has been synthesized by aqueous polymerization at low temperature.The flocculation effect of CGG-g-PAM on tobacco wastewater with high turbidity and some influential factors,such as dosage of PAC and CGG-g-PAM,pH,and CGG-g-PAM of different molecular weight on the turbidity higher than 4 500 NTU,COD and the chroma removal rate have been studied.The result shows that when pH is 5,PAC dosage 120 mg/L,and CGG-g-PAM dosage 3.6 mg/L,the removal rate of turbidity reaches 98%,COD removal rate 24%,and chroma removal rate 20%.The flocculating property is better than cationic guar gum(CGG)and cationic polyacrylamide(CPAM).The experimental research shows that this product has good flocculating properties and favorable applied prospect in industrial wastewater treatment.

Key words: cationic guar gum-acrylamide copolymer, polyaluminum chloride, tobacco wastewater

摘要：

研究了低温合成的高相对分子质量的天然高分子改性絮凝剂——丙烯酰胺-阳离子瓜尔胶接枝共聚物(CGG-g-PAM)对高浊度烟草废水的絮凝效果,以及PAC投加量、CGG-g-PAM投加量、pH和不同相对分子质量CGG-g-PAM等对浊度(>4500NTU)、COD和色度去除率的影响。结果表明,在pH5,PAC投加质量浓度为120mg/L,CGG-g-PAM投加质量浓度为3.6mg/L时,去浊率达98%,COD去除率达24%,色度去除率达20%,且絮凝性能优于阳离子瓜尔胶(CGG)和阳离子聚丙烯酰胺(CPAM)。实验研究表明,产品具有良好的絮凝效果,在工业废水处理中具有一定的应用前景。

关键词: 丙烯酰胺-阳离子瓜尔胶接枝共聚物, 聚氯化铝, 烟草废水

CLC Number: 

• X703.1