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Enhanced nitrogen removal upon the addition of volatile fatty acids from activated sludge by combining calcium peroxide and low-thermal pretreatments
Sun, Jiajun1,2,3; Song, Junxue5; Fang, Wei4; Cao, Hongbin1,2
2021-10-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume108Pages:145-151
AbstractThis study investigated a combined low-thermal and CaO2 pretreatment to enhance the volatile fatty acid (VFA) production from waste activated sludge (WAS). The fermentative product was added to a sequencing batch reactor (SBR) as an external carbon source to enhance nitrogen removal. The results showed that the combined pretreatment improved WAS solubilization, releasing more biodegradable substrates, such as proteins and polysaccharides, from TB-EPS to LB-EPS and S-EPS. The maximum VFA production of 3529 +/- 188 mg COD/L was obtained in the combined pretreatment (0.2 g CaO2 /g VS + 70 degrees C for 60 min), which was 2.1 and 1.4-fold of that obtained from the sole low-thermal pretreatment and the control test, respectively. Consequently, when the fermentative liquid was added as an external denitrification carbon source, the effluent total nitrogen decreased to Class A of the discharge standard for pollutants in rural wastewater treatment plants in most areas of China. (c) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
KeywordWaste activated sludge Anaerobic digestion Calcium peroxide Low-thermal pretreatment Volatile fatty acids
DOI10.1016/j.jes.2021.01.023
Language英语
WOS KeywordSPENT MUSHROOM COMPOST ; FOOD WASTE ; FERMENTATION ; CAO2
Funding ProjectMajor Science and Technology Program for Water Pollution Control and Treatment[2018ZX07110-002]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment
WOS IDWOS:000697456000013
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50209
Collection中国科学院过程工程研究所
Corresponding AuthorFang, Wei; Cao, Hongbin
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Xiongan Grp Ecol Construct Investment Co Lt, Baoding 071700, Peoples R China
4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
5.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Sun, Jiajun,Song, Junxue,Fang, Wei,et al. Enhanced nitrogen removal upon the addition of volatile fatty acids from activated sludge by combining calcium peroxide and low-thermal pretreatments[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,108:145-151.
APA Sun, Jiajun,Song, Junxue,Fang, Wei,&Cao, Hongbin.(2021).Enhanced nitrogen removal upon the addition of volatile fatty acids from activated sludge by combining calcium peroxide and low-thermal pretreatments.JOURNAL OF ENVIRONMENTAL SCIENCES,108,145-151.
MLA Sun, Jiajun,et al."Enhanced nitrogen removal upon the addition of volatile fatty acids from activated sludge by combining calcium peroxide and low-thermal pretreatments".JOURNAL OF ENVIRONMENTAL SCIENCES 108(2021):145-151.
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