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A combined conditioning system using NaClO as the oxidizing agent was employed to condition sludge. The variations in sludge dewatering performance before and after conditioning were investigated to validate the enhancing effect of ultraviolet irradiation on the advanced oxidation process. Meanwhile, the reasons for the deterioration in dewatering performance were discussed when NaClO was added alone. The effects of dosage ratios (NaClO/FeSO4), Fe2+ dosage, and pH value on sludge dewatering performance were investigated using the capillary suction time (CST) and specific resistance to filtration (SRF) as key evaluation indicators. The results demonstrated that the ultraviolet irradiation activated a higher concentration of strong oxidative free radicals based on the activation of Fe2+ towards NaClO, thereby promoting the decomposition of EPS. With the addition of UV irradiation, the CST reduction rate increased from 61.5% to 65.4%, while the SRF reduction rate increased from 71.4% to 79.8%. During the experiment, the TB-EPS of the sludge were converted into the LB-EPS of the sludge. As a result of this conversion, the decomposition and oxidation of protein played a crucial role in enhancing sludge dewaterability. Analysis revealed that the deterioration in dewatering when NaClO was added alone was attributable to the insufficient oxidation capacity within the system and the excessive formation of bubbles during the conditioning process.

, authors=Mei LAN*, Pei-sen YANG, Hui-long ZHANG, Jia-lu KONG, authorsList=Mei LAN, Pei-sen YANG, Hui-long ZHANG, Jia-lu KONG, authorCompany=null, correspAuthors=Mei LAN, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314922007259607435, articleId=1314922006647239049, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=紫外光联合二价铁活化次氯酸钠对污泥脱水影响及调理机制, columnId=1240689598737731645, journalTitle=中国环境科学, columnName=固体废物, runingTitle=null, highlight=null, articleAbstract=

以NaClO作氧化剂,采用联合调理体系对污泥进行调理,考察调理前后污泥脱水性能的变化,验证紫外光对高级氧化体系的促进作用,同时对单独投加NaClO调理污泥时,出现脱水性能恶化的原因进行探讨.以毛细吸水时间(CST),污泥比阻(SRF)作为污泥脱水性能评价指标,考察药剂投加量比NaClO/FeSO4,Fe2+投加量和pH值对污泥脱水性能的影响.结果表明紫外光可在Fe2+对次氯酸盐的活化基础上进一步活化出更高浓度的强氧化性自由基对EPS破解,添加UV照射后污泥CST降低率由61.5%提升至65.4%,污泥SRF降低率由71.4%提升至79.8%.实验过程中污泥TB-EPS向LB-EPS中转化,转化过程结束后,蛋白质物质的分解与氧化是污泥脱水性能提升的关键.分析发现单独投加NaClO时脱水恶化的原因是体系中氧化能力不足和投加NaClO调理污泥后产生的大量气泡.

, authors=蓝梅*, 杨培森, 张慧龙, 孔嘉璐, authorsList=蓝梅, 杨培森, 张慧龙, 孔嘉璐, authorCompany=null, correspAuthors=蓝梅, authorNote=

蓝梅(1969-),女,广东梅州人,教授,博士,主要研究方向为高级氧化技术及其模型.发表论文10余篇..

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* 责任作者,教授,
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蓝梅(1969-),女,广东梅州人,教授,博士,主要研究方向为高级氧化技术及其模型.发表论文10余篇..

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蓝梅(1969-),女,广东梅州人,教授,博士,主要研究方向为高级氧化技术及其模型.发表论文10余篇..

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紫外光联合二价铁活化次氯酸钠对污泥脱水影响及调理机制
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蓝梅 * , 杨培森 , 张慧龙 , 孔嘉璐
中国环境科学 | 固体废物 2026,46(1): 238-247
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中国环境科学 |固体废物 2026 , 46 (1) : 238 -247
紫外光联合二价铁活化次氯酸钠对污泥脱水影响及调理机制
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蓝梅(1969-),女,广东梅州人,教授,博士,主要研究方向为高级氧化技术及其模型.发表论文10余篇..

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蓝梅(1969-),女,广东梅州人,教授,博士,主要研究方向为高级氧化技术及其模型.发表论文10余篇..

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journalId=1234093305789726721, articleId=1314922006647239049, authorId=1314922010250146209, language=EN, stringName=Jia-lu KONG, firstName=Jia-lu, middleName=null, lastName=KONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=Hebei Engineering Research Center of Sewage Treatment and Resource Utilization, Key Laboratory of Urban Water Utilization Technology of Handan City, Hebei Provincial Technology Innovation Center for Water Pollution Control and Water Ecological Restoration, Hebei University of Engineering, Handan 056038, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1314922010476638628, tenantId=1146029695717560320, journalId=1234093305789726721, articleId=1314922006647239049, authorId=1314922010250146209, language=CN, stringName=孔嘉璐, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, 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蓝梅* , 杨培森, 张慧龙, 孔嘉璐
作者信息
  • 河北工程大学,污水处理及资源化利用河北省工程研究中心,邯郸市城市水利用技术重点实验室,河北省水污染控制与水生态修复技术创新中心,河北 邯郸 056038
通讯作者:
* 责任作者,教授,
作者简介:

蓝梅(1969-),女,广东梅州人,教授,博士,主要研究方向为高级氧化技术及其模型.发表论文10余篇..

Effects and conditioning mechanisms of sludge dewaterability by activating persulfate with a combination of ultraviolet light and ferrous iron
Mei LAN* , Pei-sen YANG, Hui-long ZHANG, Jia-lu KONG
Affiliations
  • Hebei Engineering Research Center of Sewage Treatment and Resource Utilization, Key Laboratory of Urban Water Utilization Technology of Handan City, Hebei Provincial Technology Innovation Center for Water Pollution Control and Water Ecological Restoration, Hebei University of Engineering, Handan 056038, China
出版时间: 2026-01-20
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以NaClO作氧化剂,采用联合调理体系对污泥进行调理,考察调理前后污泥脱水性能的变化,验证紫外光对高级氧化体系的促进作用,同时对单独投加NaClO调理污泥时,出现脱水性能恶化的原因进行探讨.以毛细吸水时间(CST),污泥比阻(SRF)作为污泥脱水性能评价指标,考察药剂投加量比NaClO/FeSO4,Fe2+投加量和pH值对污泥脱水性能的影响.结果表明紫外光可在Fe2+对次氯酸盐的活化基础上进一步活化出更高浓度的强氧化性自由基对EPS破解,添加UV照射后污泥CST降低率由61.5%提升至65.4%,污泥SRF降低率由71.4%提升至79.8%.实验过程中污泥TB-EPS向LB-EPS中转化,转化过程结束后,蛋白质物质的分解与氧化是污泥脱水性能提升的关键.分析发现单独投加NaClO时脱水恶化的原因是体系中氧化能力不足和投加NaClO调理污泥后产生的大量气泡.

污泥脱水  /  UV/Fe2+/NaClO  /  高级氧化  /  胞外聚合物(EPS)

A combined conditioning system using NaClO as the oxidizing agent was employed to condition sludge. The variations in sludge dewatering performance before and after conditioning were investigated to validate the enhancing effect of ultraviolet irradiation on the advanced oxidation process. Meanwhile, the reasons for the deterioration in dewatering performance were discussed when NaClO was added alone. The effects of dosage ratios (NaClO/FeSO4), Fe2+ dosage, and pH value on sludge dewatering performance were investigated using the capillary suction time (CST) and specific resistance to filtration (SRF) as key evaluation indicators. The results demonstrated that the ultraviolet irradiation activated a higher concentration of strong oxidative free radicals based on the activation of Fe2+ towards NaClO, thereby promoting the decomposition of EPS. With the addition of UV irradiation, the CST reduction rate increased from 61.5% to 65.4%, while the SRF reduction rate increased from 71.4% to 79.8%. During the experiment, the TB-EPS of the sludge were converted into the LB-EPS of the sludge. As a result of this conversion, the decomposition and oxidation of protein played a crucial role in enhancing sludge dewaterability. Analysis revealed that the deterioration in dewatering when NaClO was added alone was attributable to the insufficient oxidation capacity within the system and the excessive formation of bubbles during the conditioning process.

sludge dewatering  /  UV/Fe2+/NaClO  /  advanced oxidation process  /  extracellular polymeric substances (EPS)
蓝梅, 杨培森, 张慧龙, 孔嘉璐. 紫外光联合二价铁活化次氯酸钠对污泥脱水影响及调理机制. 中国环境科学, 2026 , 46 (1) : 238 -247 .
Mei LAN, Pei-sen YANG, Hui-long ZHANG, Jia-lu KONG. Effects and conditioning mechanisms of sludge dewaterability by activating persulfate with a combination of ultraviolet light and ferrous iron[J]. China Environmental Science, 2026 , 46 (1) : 238 -247 .
  • 河北省高等学校科学技术研究重点项目(ZD2022065)
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  • 接收时间:2024-07-07
  • 首发时间:2026-10-08
  • 出版时间:2026-01-20
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  • 收稿日期:2024-07-07
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河北省高等学校科学技术研究重点项目(ZD2022065)
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    河北工程大学,污水处理及资源化利用河北省工程研究中心,邯郸市城市水利用技术重点实验室,河北省水污染控制与水生态修复技术创新中心,河北 邯郸 056038

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2种不同金属材料的力学参数
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属
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种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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