【摘要】 以毛细吸水时间（CST）和污泥过滤时间（TTF）作为评价污泥脱水性能的指标,实验考察了调理剂聚丙烯酰胺PAM-1（直链型阳离子PAM）和PAM-2（交联型阳离子PAM）对污泥脱水性能的影响,并与FeCl₃的作用效果进行比较.实验结果表明:相对于室温,4℃条件下保存污泥脱水性质较稳定.用CST评价污泥的脱水性能时,PAM-1适合与FeCl₃联合使用,最佳投加量为（2+10）mg/g（以绝干污泥计）.用TTF表征污泥的脱水性能,PAM-1适合单独使用,最佳投加量为5mg/g.PAM-2不适合与FeCl₃联合使用.当其投加量为3mg/g时,污泥的CST与TTF均达到最小.更多还原

【Abstract】 The effects of two kinds of polyacrylamide（the straight-chain cationic polyacrylamide（PAM-1）and cross-linked cationic polyacrylamide（PAM-2））and FeCl₃ on sludge dewatering performance were investigated with the capillary suction time（CST）and the time to filter（TTF）as the main evaluation indexes.Experimental results show that the dewatering performance of sludge which stored at 4 ℃ was more stable than at room temperature.PAM-1,combined with FeCl₃,had a better sludge dewatering performance when CST was used as the evaluation index,the optimum dosage of PAM-1 and FeCl₃ were（2+10）mg/g dried sludge.When TTF was used as the index to evaluate sludge dewatering performance,PAM-1 was found to behave much better when used individually and the optimum dosage of PAM-1 was 5mg/g.Also,PAM-2 was found not suitable to be used with FeCl₃.When the dosage of PAM-2 was 3 mg/g the both values of CST and TTF reached their minimum.更多还原