Changes in the structure of extracellular polymeric substances during sludge vermicomposting

被引：0
|
作者：
Chen, Jin [1 ]
Xie, Jia-Chen [1 ]
Xu, Jun-Jie [1 ]
Xia, Hui [1 ]
Huang, Kui [1 ,2 ]
机构：
[1] School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou,730070, China
[2] Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou,730070, China
来源：
Zhongguo Huanjing Kexue/China Environmental Science | 2022年 / 42卷 / 11期
关键词：
Amino acids - Biogeochemistry - Nitrates - Proteins - Soils - Stabilization;
D O I：
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中图分类号：
学科分类号：
摘要：
Extracellular polymer substance (EPS) is an important factor affecting the stabilization of excess sludge. To reveal the relationship between EPS characteristics of sludge and its decomposition of vermicomposting, this study investigated the effect of vermicomposting on structural changes of sludge EPS, by comparing with the control treatment without earthworms. The results showed that the electric conductivity and nitrate nitrogen content of vermicompost significantly increased by 0.64 and 0.22 fold, respectively, compared with control treatment (P © 2022 Chinese Society for Environmental Sciences. All rights reserved.
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页码：5188 / 5197
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