陈化污泥理化特性对泥饼渗透性的影响研究

doi:10.16285/j.rsm.2021.0460

岩土力学 ›› 2022, Vol. 43 ›› Issue (2): 479-488.doi: 10.16285/j.rsm.2021.0460

陈化污泥理化特性对泥饼渗透性的影响研究

谭洵^{1, 2}，何星星^{1, 2}，陈亿军^{1, 3, 4}，刘磊^{1, 3, 4}，万勇^{1, 3, 4}

1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北武汉 430071；2. 中国科学院大学，北京 100049； 3. 中国科学院武汉岩土力学研究所-香港理工大学固体废弃物科学联合实验室，湖北武汉，430071； 4. 中国科学院武汉岩土力学研究所污染泥土科学与工程湖北省重点实验室，湖北武汉 430071

收稿日期:2021-04-01 修回日期:2021-06-30 出版日期:2022-02-11 发布日期:2022-02-22
通讯作者: 陈亿军，男，1984年生，博士，副研究员，主要从事污泥处理处置及资源化等方面的工作。E-mail: yjchen@whrsm.ac.cn E-mail: tanxun6539@qq.com
作者简介:谭洵，男，1992年生，博士研究生，主要从事污泥处理处置及资源化等方面的研究。
基金资助:
国家自然科学基金国际（地区）合作与交流项目（No. 51861165104）

Influence of physicochemical properties of aged sludge on the permeability of filter cake

TAN Xun^{1, 2}, HE Xing-xing^{1, 2}, CHEN Yi-jun^{1, 3, 4}, LIU Lei^{1, 3, 4}, WAN Yong^{1, 3, 4}

1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan, Hubei 430071, China; 4. Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China

Received:2021-04-01 Revised:2021-06-30 Online:2022-02-11 Published:2022-02-22
Supported by:
This work was supported by the Funds for International Cooperation and Exchange of the National Natural Science Foundation of China (51861165104).

摘要/Abstract

摘要： 开展陈化污泥渗透特性研究对于填埋库污泥脱水减量作业具有重要指导意义。选取了8种不同陈化条件下的污泥，开展了压缩排水试验，测定了陈化污泥上清液中可溶性有机物含量和类型，以及陈化污泥聚合体粒径分布与滤液的Zeta电位，并通过皮尔逊相关性分析研究了陈化污泥各物理化学特性间的相互作用。结果表明，随着上清液中可溶性有机物含量的减少、相对腐质化程度的增高与滤液Zeta电位绝对值的增大，陈化污泥的可渗透性增大。同时，当陈化污泥聚合体趋于稳定和粒径增大时，包裹在聚合体中的有机物不易释放到上清液中，陈化污泥可渗透性增大。另外，由于陈化环境的影响，陈化污泥总有机含量变化与上清液中有机物含量变化缺乏一致性，依据陈化污泥有机质含量判断渗透性会造成错误。最后，建立了陈化污泥比阻的影响模型，对于预处理过程中如何改善陈化污泥渗透性具有参考意义。

关键词: 陈化污泥, 陈化条件, 理化特性, 脱水, 渗透性

Abstract: Study of the permeability of aged sludge is important for the drainage reduction of sludge in landfills. Eight kinds of sludge under different aging conditions were taken as samples in the present work. Compression drainage tests were carried out, and the content and type of soluble organic matter in the supernatant were determined. The aggregate size distribution and Zeta potential were also measured. The interactions between the physicochemical properties of aged sludge were analyzed by conducting a Pearson correlation. The results show that the permeability of aged sludge increases with the decrease of soluble organic matter content in the supernatant, the increase of the relative degree of humification and the absolute value of filtrate Zeta potential. Simultaneously, when the aggregate tends to be stable and the particle size increases, the organic matter wrapped in the aggregate is not easy to release into the supernatant, and the permeability of aged sludge increases. In addition, due to the aging environment variations, the change in total organic content of aged sludge lacks of consistency with the change in organic matter content in the supernatant. Judging permeability based on the organic matter content of aged sludge would cause errors. Finally, the influence models of specific resistance of aged sludge were established, which were the reference for improving the permeability of aged sludge in the pre-treatment process.

Key words: aged sludge, aging condition, physicochemical property, dewatering, permeability

中图分类号:

X 703

谭洵, 何星星, 陈亿军, 刘磊, 万勇, . 陈化污泥理化特性对泥饼渗透性的影响研究[J]. 岩土力学, 2022, 43(2): 479-488.

TAN Xun, HE Xing-xing, CHEN Yi-jun, LIU Lei, WAN Yong, . Influence of physicochemical properties of aged sludge on the permeability of filter cake[J]. Rock and Soil Mechanics, 2022, 43(2): 479-488.

参考文献

相关文章 15

[1]	张虎元, 王赵明, 朱江鸿, 周光平, . 混合型缓冲材料砌块渗透性及其各向异性研究[J]. 岩土力学, 2022, 43(3): 573-581.
[2]	詹良通, 尹昭宇, 陈萍, 王顺玉, 陈为武, 蒋建良, 管仁秋, . 洗砂泥浆压滤脱水性能及快速检测方法[J]. 岩土力学, 2022, 43(3): 769-776.
[3]	梁冰, 张柴, 刘磊, 陈锋, . 垃圾土现场渗透性测定与土水特性反演[J]. 岩土力学, 2021, 42(6): 1493-1500.
[4]	胡伟, 朱海涛, 蒋明镜, 李文昊, . 考虑能源土渗透性影响的水合物分解超孔压特性研究[J]. 岩土力学, 2021, 42(10): 2755-2762.
[5]	朱秦, 苏立君, 刘振宇, 杨世豪, . 颗粒迁移作用下宽级配土渗透性研究[J]. 岩土力学, 2021, 42(1): 125-134.
[6]	李华, 李同录, 江睿君, 范江文. 基于滤纸法的非饱和渗透性曲线测试[J]. 岩土力学, 2020, 41(3): 895-904.
[7]	李玲, 刘金泉, 刘造保, 刘桃根, 王伟, 邵建富, . 砂-黏土混合物高压压实性能试验研究[J]. 岩土力学, 2019, 40(9): 3502-3514.
[8]	沈泰宇, 汪时机, 薛乐, 李贤, 何丙辉, . 微生物沉积碳酸钙固化砂质黏性紫色土试验研究[J]. 岩土力学, 2019, 40(8): 3115-3124.
[9]	李崴, 王者超, 毕丽平, 刘杰, . 辐射流条件下裂隙岩体渗透性表征单元体尺寸与等效渗透系数[J]. 岩土力学, 2019, 40(2): 720-727.
[10]	董金玉，王闯，周建军，杨继红，李严威，. 泡沫改良砂卵石土的试验研究[J]. , 2018, 39(S1): 140-148.
[11]	左宇军，孙文吉斌，邬忠虎，许云飞,. 渗透压–应力耦合作用下页岩渗透性试验[J]. , 2018, 39(9): 3253-3260.
[12]	杨建民，霍王文，. 渗透性水平向各向异性导致椭圆形地面沉降漏斗的一个性质[J]. , 2018, 39(8): 2960-2976.
[13]	任玉宾，王胤，杨庆. 颗粒级配与形状对钙质砂渗透性的影响[J]. , 2018, 39(2): 491-497.
[14]	张强，李小春，胡少斌，牛智勇，汪芳，范坤，邵光强,. 高应力下花岗岩耦合节理在剪切过程中渗透率演化特性[J]. , 2018, 39(10): 3641-3650.
[15]	张豫川，姚永国，周泓,. 长龄期改良黄土抗剪强度与渗透性试验研究[J]. , 2017, 38(S2): 170-176.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

陈化污泥理化特性对泥饼渗透性的影响研究

Influence of physicochemical properties of aged sludge on the permeability of filter cake

PDF (Chinese)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 10