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Effects of free nitrous acid and freezing co-pretreatment on sludge short-chain fatty acids production and dewaterability
Wu, Yuqi1; Song, Kang1; Sun, Xiaoyan1; Li, Lu1; Wang, Wenlin2; Wang, Qilin3; Wang, Dongbo4
Corresponding AuthorSong, Kang(sk@ihb.ac.cn)
2019-06-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume669Pages:600-607
AbstractShort-chain fatty acids (SCFAs) as recoverable carbon source from waste activated sludge anaerobic fermentation process have aroused wide concern. In this study, free nitrous acid (FNA) and freezing pretreatments were combined to enhance SCFAs yield and fermented sludge dewaterability in the anaerobic fermentation system. The effects of different FNA concentrations and different freezing conditions (with or without curing stages) were analysed and compared. The results indicated that combining 1.07 mg N/L FNA with 48 h continuous freezing at -5 degrees C, raised SCFAs production from 6.7 mg COD/g volatile suspended solids (VSS) for the blank (no pretreatment) up to 124.0 mg COD/g VSS. In addition, the minimal water content of the treated fermented sludge cake was 78.11%, which was less than that of the blank (81.22%). SCFAs production and dewaterability enhancement could be attributed to sludge disintegration induced by the co-pretreatment, which led to sludge solubilisation, organics release, methanogenesis inhibition and particle size variation. This study implied that FNA and freezing co-pretreatment has the potential to enhance SCFAs production and sludge dewaterability in wastewater treatment plants. (C) 2019 Elsevier B.V. All rights reserved.
KeywordWaste activated sludge Anaerobic fermentation Freezing Free nitrous acid Short-chain fatty acids Dewaterability
DOI10.1016/j.scitotenv.2019.03.175
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41877344] ; Chinese Academy of Sciences[Y75Z01-1-401] ; Chinese Academy of Sciences[Y82Z08-1-401] ; National Water Science and Technology Project[2018ZX07208001]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000463663500057
WOS KeywordWASTE ACTIVATED-SLUDGE ; PROMOTES HYDROGEN-PRODUCTION ; LOW-ORGANIC-CONTENT ; ANAEROBIC FERMENTATION ; ALKALINE FERMENTATION ; METHANE PRODUCTION ; DARK FERMENTATION ; NITRITE ; BIOPRODUCTION ; ENHANCEMENT
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project ; National Water Science and Technology Project
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27667
Collection水环境工程研究中心
Corresponding AuthorSong, Kang
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
2.Nanjing Inst Environm Sci, Minist Environm Protect, Nanjing 210042, Jiangsu, Peoples R China
3.Univ Technol Sydney, Sch Civil & Environm Engn, Ctr Technol Water & Wastewater, Ultimo, NSW 2007, Australia
4.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yuqi,Song, Kang,Sun, Xiaoyan,et al. Effects of free nitrous acid and freezing co-pretreatment on sludge short-chain fatty acids production and dewaterability[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,669:600-607.
APA Wu, Yuqi.,Song, Kang.,Sun, Xiaoyan.,Li, Lu.,Wang, Wenlin.,...&Wang, Dongbo.(2019).Effects of free nitrous acid and freezing co-pretreatment on sludge short-chain fatty acids production and dewaterability.SCIENCE OF THE TOTAL ENVIRONMENT,669,600-607.
MLA Wu, Yuqi,et al."Effects of free nitrous acid and freezing co-pretreatment on sludge short-chain fatty acids production and dewaterability".SCIENCE OF THE TOTAL ENVIRONMENT 669(2019):600-607.
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