Modified polyamidoamine cationic dendrimer polymer is a high bleaching flocculant, has performance of less dosage , wide pH range of applications, high bleaching rate, easy operation etc. At 25 ℃, pH = 3 ~ 5 , adding  1.0G PAMAM-TAC to fuel waste, the processing time is 10min, the decolorization rate can be up to 97%. Weihai CY Dendrimer Technology Co.,Ltd  forwards from “Cationic polyamide-amine tree and leather dyeing wastewater applications,” Xuechuan Wang, Linyan He, Taotao Qiang,  Shanxi University of Technology, Ministry of Education Key Laboratory of Chemical Additives Fine Chemicals 27 No. 4 391 ~ 395 April 2010.