MnFe<sub>2</sub>O<sub>4</sub>/BC活化PMS强化污泥脱水效能和机理研究

由昆; 刘俊彤; 王子男; 赵景瑞

doi:10.13205/j.hjgc.202604024

MnFe₂O₄/BC活化PMS强化污泥脱水效能和机理研究

doi: 10.13205/j.hjgc.202604024

沈阳建筑大学市政与环境工程学院, 沈阳 110168

基金项目:

沈阳市科技局“供水系统的海量异构数据信息智能获取与数字孪生技术研究”（24-213-3-03）

详细信息

作者简介:
由昆(1978—),女,正高级实验师,主要研究方向为污水处理理论与技术。466755432@qq.com

通讯作者:
由昆(1978—),女,正高级实验师,主要研究方向为污水处理理论与技术。466755432@qq.com

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出版历程
- 收稿日期: 2025-06-25
- 网络出版日期: 2026-06-06
- 刊出日期: 2026-04-01

Enhanced sludge dewatering efficiency and mechanism of MnFe₂O₄/BC-activated PMS

School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China

摘要

摘要: 为了提高污泥脱水效能，构建了MnFe₂O₄/BC/PMS体系以破解污泥。通过单因素和多因素试验，考察MnFe₂O₄/BC（记为MFB）投加量、PMS投加量、反应时间对污泥脱水效能的影响，明确污泥脱水的最佳工艺参数和环境因素的主次关系；通过对MnFe₂O₄/BC/PMS体系中活性物质组分鉴定，确定了MnFe₂O₄/BC活化PMS破解污泥的主要自由基及EPS破解主要路径。结果表明，环境因素对污泥含水率（W_c）和总有机碳（TOC）含量影响顺序为MFB>PMS>反应时间，各因素交互作用对污泥脱水性能影响顺序为MFB-PMS>PMS-反应时间>MFB-反应时间。在MFB投加量为132.99 mg/g，PMS投加量为421.80 mg/g，反应18 min时，污泥脱水效果最佳，W_c和TOC含量分别达到45.8%和489.2 mg/L。MnFe₂O₄/BC活化PMS释放出的·OH和SO₄^-·通过氧化蛋白质主链导致肽链断裂，将主要影响污泥脱水的蛋白质含量从174.6 mg/L降低到75.7 mg/L，特别是TB-EPS中蛋白质含量从91.8 mg/L破解到36.3 mg/L，降低EPS亲水性，提高了污泥脱水效果。
- 尖晶石型铁酸锰/生物炭 /
- 过一硫酸盐 /
- 高级氧化 /
- 污泥脱水 /
- 自由基 /
- 胞外聚合物
Abstract: In order to enhance sludge dewatering efficiency， an MnFe₂O₄/BC/PMS system was constructed for sludge disintegration. Through single-factor and multi-factor experiments， the effects of MnFe₂O₄/BC dosage， PMS dosage， and reaction time on the sludge dewatering efficiency were investigated. The optimal process parameters for sludge dewatering and the primary-secondary relationship of environmental factors were clarified. By identifying the active substances in the MnFe₂O₄/BC/PMS system， the main free radicals released by MnFe₂O₄/BC-activated PMS to disintegrate sludge and the main pathways for EPS disintegration were determined. The results showed that the influence of environmental factors on the sludge moisture content （W_c） and total organic carbon （TOC） content followed the order of MnFe₂O₄/BC > PMS > reaction time. The order of influence of factor interactions on sludge dewatering performance was MnFe₂O₄/BC and PMS > PMS and reaction time > MnFe₂O₄/BC and reaction time. When the MnFe₂O₄/BC dosage was 132.99 mg/g DS， the PMS dosage was 421.80 mg/g DS， and the reaction time was 18 min， the sludge dewatering efficiency was the best， with the W_c and TOC content reaching 45.8% and 489.2 mg/L， respectively. The ·OH and SO₄^-· released from MnFe₂O₄/BC-activated PMS oxidized the protein main chain， leading to peptide chain breakage. This primarily reduced the protein content in the sludge from 174.6 mg/L to 75.7 mg/L， and especially in TB-EPS from 91.8 mg/L to 36.3 mg/L， thereby decreasing the hydrophilicity of EPS and improving sludge dewatering efficiency.
- spinel-type manganese ferrite/BC /
- peroxymonosulfate /
- advanced oxidation /
- sludge dewatering /
- free radicals /
- extracellular polymeric substances

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