多糖生物絮凝剂在污水处理中的应用

Application of Polysaccharide Bioflocculant in Wastewater Treatment

将根瘤菌CFCC2272所产的胞外多糖制备成生物絮凝剂,与PAM和PAC分别应用于高岭土废水、刚果红印染废水的絮凝处理。对高岭土废水的处理,生物絮凝剂的最佳投药量略高于PAC及PAM,为12 mg/L;最适pH值范围较广,为4~12。对于刚果红印染废水的处理,生物絮凝剂的最佳投药量为100 mg/L,最适pH范围为6~12。

In this study,a bioflocculant was prepared from the exopolysaccharide produced by the rhizobium CFCC2272 and applied to the flocculation treatment of kaolin wastewater and Congo red dyeing wastewater,together with PAM and PAC,respectively.For the treatment of kaolin wastewater,the optimal dosage of bioflocculant was slightly higher than that of PAC and PAM,which was 12 mg/L.The optimal pH range is wider,4~12.For the treatment of dye removal,the optimal dosage of biological flocculant is 100 mg/L,and the optimal pH range is 6~12.