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Influence of wastewater sludge properties on the performance of electro-osmosis dewatering
Bai, Hao1; Zhu, Rong2; An, Hao1; Zhou, Guoya3; Huang, Hui1; Ren, Hongqiang1; Zhang, Yan1
2019-09-19
Source PublicationENVIRONMENTAL TECHNOLOGY
ISSN0959-3330
Volume40Issue:21Pages:2853-2863
AbstractAlthough the properties of municipal wastewater sludge play key roles in the electro-osmosis dewatering process, it is still controversial which properties have the greatest effect on the dewatering performance. In this study, multiple regression models with the Group Lasso method were used to investigate the relationship between the final moisture content and the sludge properties, including pH, electrical conductivity (EC), volatile solids content, zeta potential (zeta), initial moisture content, extracellular polymeric substances (EPS), proteins of EPS (EPSPr), polysaccharides of EPS (EPSPo) and the ratio of EPSPr and EPSPo (EPSR). Under the optimal conditions (pressure = 100 kPa, voltage = 50 V and cake thickness = 15 mm), EPS, EC and zeta were significantly related to sludge dewaterability and EPS was the most important factor. Furthermore, the coefficient estimate of EPSPo was greater than that of EPSPr and the coefficient of EPSR was negative, indicating that EPSPo plays more important roles in electro-osmosis dewatering than EPSPr. Thus, reducing the EPS content of sludge, especially the EPSPo content, is necessary to improve the performance of electro-osmosis dewatering. [GRAPHICS] .
KeywordWastewater sludge electro-osmosis dewatering sludge properties extracellular polymeric substances Group Lasso method
DOI10.1080/09593330.2018.1455744
Language英语
Funding ProjectNational Key Technology Support Program[2014BAC08B07] ; National Natural Science Foundation of China[21407076] ; National Natural Science Foundation of China[21777068] ; National Natural Science Foundation of China[51508263] ; Jiangsu Science and Technology Support Program[BE2015622]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000477902200012
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/35209
Collection系统科学研究所
Affiliation1.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China
2.Chinese Acad Sci, Acad Math & Syst Sci, Beijing, Peoples R China
3.Peng Yao Environm Protect Inst, Yixing, Peoples R China
Recommended Citation
GB/T 7714
Bai, Hao,Zhu, Rong,An, Hao,et al. Influence of wastewater sludge properties on the performance of electro-osmosis dewatering[J]. ENVIRONMENTAL TECHNOLOGY,2019,40(21):2853-2863.
APA Bai, Hao.,Zhu, Rong.,An, Hao.,Zhou, Guoya.,Huang, Hui.,...&Zhang, Yan.(2019).Influence of wastewater sludge properties on the performance of electro-osmosis dewatering.ENVIRONMENTAL TECHNOLOGY,40(21),2853-2863.
MLA Bai, Hao,et al."Influence of wastewater sludge properties on the performance of electro-osmosis dewatering".ENVIRONMENTAL TECHNOLOGY 40.21(2019):2853-2863.
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