|本期目录/Table of Contents|

[1]蒋心茹 姬高升 刘杨 房俊楠 许力山 谢炎东 闫志英**.[综 述] 市政污泥胞外聚合物(EPS)的形成过程与解聚方法研究进展[J].应用与环境生物学报,2020,26(06):1-12.[doi:10.19675/j.cnki.1006-687x.2019.10014]
 JIANG Xinru,,et al.Overview of extracellular polymeric substance (EPS) generation and disaggregation in municipal sewage sludge[J].Chinese Journal of Applied & Environmental Biology,2020,26(06):1-12.[doi:10.19675/j.cnki.1006-687x.2019.10014]
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[综 述] 市政污泥胞外聚合物(EPS)的形成过程与解聚方法研究进展()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年06期
页码:
1-12
栏目:
综 述
出版日期:
2020-12-25

文章信息/Info

Title:
Overview of extracellular polymeric substance (EPS) generation and disaggregation in municipal sewage sludge
作者:
蒋心茹123 姬高升123 刘杨123 房俊楠123 许力山13 谢炎东4 闫志英13**
1中国科学院成都生物研究所,中国科学院环境与应用微生物重点实验室 成都 610041
2中国科学院大学 北京 100049
3环境微生物四川省重点实验室 成都 610041
4广西师范大学 桂林 541004
Author(s):
JIANG Xinru1 2 3 JI Gaosheng1 2 3 LIU Yang1 2 3 FANG Junnan1 2 3 XU Lishan1 3 XIE Yandong4 & YAN Zhiying1 3**
1 Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Science , Chengdu 610041, China
2 the University of Chinese Academy of Science, Beijing 100049, China
3 Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu 610041, China
4 Guangxi Normal University, Guilin 541004, China
关键词:
城市污泥厌氧消化细胞外聚合物预处理
Keywords:
municipal sludge anaerobic digestion extracellular polymeric substance (EPS) pretreatment
DOI:
10.19675/j.cnki.1006-687x.2019.10014
摘要:
市政污泥厌氧发酵能将污泥所含有机质转化为能源物质甲烷,使污泥实现“减量化”、“无害化”、“资源化”,但发酵效率与污泥胞外聚合物(extracellular polymeric substance,EPS)的降解程度密切相关。本文综述了EPS的形成机理、解聚方法及其组分检测技术。主要结论为:EPS由多聚糖类、脂质、蛋白质、DNA以及某些小分子类物质相互结合、聚集而成。根据物质之间结合的紧密程度,EPS可分为4个层次,因此EPS解聚方法通过对其结构破坏程度不同而表现出不同的EPS溶解率。解聚方法大致可分为物理、化学和生物3种,其中生物法效果显著、反应条件温和、反应过程能耗低且对环境无二次污染,具有巨大的应用前景。EPS组分检测技术通过监测EPS中金属离子、腐殖质、水分等的迁移以及污泥结构变化,评价EPS降解程度,为理解污泥厌氧发酵过程、提高污泥厌氧发酵效率提供新的视角和观点,同时为实现污泥厌氧发酵沼渣农林化利用提供理论支撑。最后提出EPS作为有机聚合体,生物预处理法优势明显,能在提高EPS溶解率的同时减少厌氧反应抑制物生成,实现污泥生物质资源的高效安全利用。(图4 表2 参67)
Abstract:
Municipal sewage sludge anaerobic digestion can bring sewage sludge organics into methane, which makes it reduction, harmless and recycling. It was reported that the reaction efficiency was strongly linked with extracellular polymeric substance (EPS) degradation. Overview introduced the forming mechanism, disaggregation methods and detection technologies of EPS. The main ideas included: EPS was consisted with polysaccharides, lipids, proteins, DNA, and smaller molecules holding together. According to the strength of substances binding, EPS can be classified into four layers from the inside to the center. Therefore, the dissolution rate of EPS was decided by the different destroying degrees for the structure. Disaggregation methods can be systematically classified into three types: physical, chemical, and biological. There is a promising application because of the features of biological methods, in which significant degradation, mild reaction conditions, low energy consumption and no secondary pollution to the environment. The developing detection technologies evaluated EPS degradation level by monitoring the migration of metal ions, humics, water and other components in EPS and changes of sludge structures. These technologies suggested more new perspectives to understand the process of sewage sludge anaerobic digestion and improving the efficiency of anaerobic digestion. At the same time, they provided theoretical support for the agricultural and forestry utilization of biogas residues. Finally, we proposed that EPS was organic polymers, it can be effectively used as more as possible after biological pretreatments because of enhanced dissolution degrees as well as decreased the inhibitors generation for anaerobic digestion. Only in that way can we utilize sewage sludge biomass preferably and safely.

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备注/Memo

备注/Memo:
收稿日期 Received: 2019-10-11 接受日期 Accepted: 2020-01-08
四川省重点研发项目(2019YFS0052)、四川省重大科技专项课题(2018SZDZX0024)和中国科学院科技服务网络项目(KFJ-STS-QYZD-098)资助
**通讯作者 Corresponding author (E-mail: yanzy@cib.ac.cn)
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更新日期/Last Update: 2020-03-08