不同调理剂作用下的污泥生物干化有机质降解研究
PDF下载 (391)王新雨,王 侃,郑国砥,陈 颖,蔡 璐.不同调理剂作用下的污泥生物干化有机质降解研究[J].宁波大学学报(理工版),2022,35(6):78-85.DOI:
WANG Xinyu,WANG Kan,ZHENG Guodi,CHEN Ying,CAI Lu.Degradation of organic matter in sewage sludge biodrying with different amendments[J].Journal of Ningbo University(Natural Science & Engineering Edition),2022,35(6):78-85.DOI:
| Title: | Degradation of organic matter in sewage sludge biodrying with different amendments |
| 作者: | 王新雨, 王 侃, 郑国砥, 陈 颖, 蔡 璐 |
| Author(s): | WANG Xinyu, WANG Kan, ZHENG Guodi, CHEN Ying, CAI Lu |
| 关键词: | 污泥; 生物干化; 酶活性; 有机质降解; 调理剂 |
| Keywords: | sewage sludge; biodrying; enzymatic activity; degradation of organic matter; amendment |
| 分类号: | X703 |
| 文献标识码: | A |
| 摘要: | 为探讨不同调理剂作用下污泥生物干化过程中的有机质降解情况, 分别使用可循环调理剂(T1组)、负载TiO2的可循环调理剂(T2组)、陶粒(T3组)对污泥进行生物干化, 分析各阶段挥发分、E4/E6等常规理化指标, 探究了水解酶类和过氧化物酶活性, 以及相应降解底物蛋白质、脂肪酶、纤维素和木质素等的含量变化. 结果表明, 各组关键酶活性与相应底物降解率呈正相关, 在生物干化前期水解酶类发挥主导作用, 后期过氧化物酶活性逐渐增强. 经生物干化后, T1组木质素、碳水化合物降解程度最高, T2组蛋白质、纤维素降解程度最高, T3组脂肪降解程度最高. 因此, 可循环调理剂对有机质降解促进效果更好, 可作为污泥生物干化调理剂使用, 以促进污泥减量化. |
| Abstract: | In order to investigate the degradation of organic matter in the sewage sludge biodrying with different amendments, this study used recyclable amendment (T1), TiO2-decorated recyclable amendment (T2) and ceramsite (T3) to conduct biodrying of sewage sludge. Basic physico-chemical properties such as volatile solids and E4/E6 were analyzed at each stage. Activities of hydrolases and peroxidase were explored, and the changes of the corresponding degradation substrate protein, lipase, cellulose and lignin content were examined. The results showed that the activities of key enzymes in each group were positively correlated with the degradation rate of corresponding substrates. Furthermore, the hydrolases played a dominant role in the early stage of biodrying. The activity of peroxidase gradually increased in the later stage. After biodrying, the degradation degree of lignin in the T1, the degradation degree of protein and cellulose in the T2, and the degradation degree of fat in the T3 were the highest among all the tested samples. Therefore, the recyclable amendment has a better promotion effect on the degradation of organic matter and can be used as the biodrying amendment of sewage sludge to promote sewage sludge reduction. |
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| 备注/Memo: | 收稿日期:2022-05-17.宁波大学学报（理工版）网址:http://journallg.nbu.edu.cn/ 基金项目:国家自然科学基金（52070102）;浙江省公益技术应用研究项目（LGF20E080011）. 第一作者:王新雨（1997－）,女,安徽滁州人,在读硕士研究生,主要研究方向:固体废弃物资源化利用.E-mail:wxyy1110@163.com *通信作者:蔡璐（1986－）,女,浙江绍兴人,副教授,主要研究方向:固体废弃物资源化利用.E-mail:cailu@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
