【摘要】 针对污泥难以脱水、处理难度大的问题,通过过硫酸盐高级氧化技术联合造纸污泥作为骨架对市政污泥进行调理,以泥饼含水率、污泥比阻（SRF）、毛细吸水时间（CST）、胞外聚合物（EPS）中蛋白质和多糖的分布关系,以及滤饼和滤液中总氮、总磷含量为指标,研究Fe²⁺活化过硫酸盐联合造纸污泥骨架构建体对EPS的影响。结果表明:将造纸污泥与市政污泥1∶2混合,再添加过硫酸盐和Fe²⁺,对污泥的调理效果最好,泥饼的含水率由74.52%降至69.57%,SRF降低了66.23%;蛋白质和多糖的分布关系为S-EPS>LB-EPS>TB-EPS,滤饼中总氮所占比例由94.60%下降至65.62%,EPS被有效破解,污泥脱水效果显著改善。更多还原

【Abstract】 In response to the difficulty in sewage sludge dewatering and treatment, the combination of Fe²⁺-activated persulfate oxidation and skeleton builders of paper sludge was used to condition the sewage sludge. In this study, moisture content of sludge cake, specific resistance to filtration（SRF）, capillary sunction time（CST）,the distribution of protein and polysaccharide in the EPS, and the total nitrogen and total phosphorus content in the filter cake and filtrate were used to evaluate the effect of above combination on the EPS. The result showed that when the sewage sludge was mixed with the paper sludge with a ratio of 1:2, the addition of Fe²⁺ and persulfate could result in the best dewaterability effect. The moisture content of sludge cake decreased from74.52% to 69.57%, and the SRF was reduced by 66.23%. The distribution of protein and polysaccharide was S-EPS>LB-EPS>TB-EPS, and the proportion of total nitrogen in cake decreased from 94.60% to 65.62%. The EPS was effectively disrupted, and the sludge dewaterability was significantly improved.更多还原