Abstract：
Integrating hydrothermal treatment (HT) and advanced oxidation processes (AOP) was proved to be a promising approach for improving sludge dewaterability. In this study, the EPS valorization under elevated temperature and sulfate radical-based AOP were investigated to clarify the valorization of organic matter in different EPS layers and its effects on the sludge dewaterability. Results indicated that the organic matters in the inner layer of EPS decreased sharply with the elevated temperature, and released into the soluble EPS. Sulfate radical-based AOP significantly accelerated the degradation of organics and microbial cells lysis, especially in the presence of ZVI. The protein with the higher hydrophobicity was detected under the AOP enhanced HT. A better synergistic effect on sludge dewaterability was obtained by integrated the AOP at the initial hydrothermal stage. 3D-EEM and parallel factor analysis indicated that the protein and microbial by-product like substances in tightly bound EPS significantly affected the dewaterability.
摘要：
事实证明，将水热处理（HT）和高级氧化工艺（AOP）集成在一起是提高污泥脱水能力的一种有前途的方法。在这项研究中,研究了高温下EPS的增价和基于硫酸盐自由基的AOP，以阐明不同EPS层中有机物的增价及其对污泥脱水能力的影响。结果表明，随着温度的升高，EPS内层中的有机物急剧减少，并释放到可溶性EPS中。基于硫酸盐自由基的AOP显著加速了有机物的降解和微生物细胞的裂解,尤其是在ZVI的存在下.在AOP增强的HT下检测到具有较高疏水性的蛋白。在初始水热阶段整合AOP对污泥脱水性能具有较好的协同作用。3D-EEM和平行因素分析表明，紧密结合的EPS中的蛋白质和微生物副产物类物质显着影响脱水能力。
