DOI: 10.1016/j.watres.2018.07.054
Scopus记录号: 2-s2.0-85050454790
论文题名: Employing Electrochemical-Fenton process for conditioning and dewatering of anaerobically digested sludge: A novel approach
作者: Masihi H. ; Badalians Gholikandi G.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 373
结束页码: 382
语种: 英语
英文关键词: Anaerobically digested sludge
; Conditioning and dewatering
; Electrochemical-Fenton process
; ludge treatment
Scopus关键词: Anaerobic digestion
; Particle size
; Particle size analysis
; Advanced oxidation technology
; Anaerobically digested sludges
; Electrolysis voltages
; Extracellular polymeric substances
; Fenton process
; ludge treatment
; Operational conditions
; Specific resistances
; Dewatering
; water
; anaerobic digestion
; bioreactor
; comparative study
; concentration (composition)
; conditioning
; dewatering
; electrochemical method
; exopolymer
; operations technology
; sludge
; Article
; comparative study
; controlled study
; electrochemical analysis
; energy consumption
; Fenton reaction
; oxidation
; particle size
; pH
; polymerization
; priority journal
; retention time
; sludge conditioning
; sludge dewatering
; zeta potential
英文摘要: In this study, for the first time, the occurrence mechanism of anaerobically digested sludge conditioning for dewatering process based on Electrochemical-Fenton technology was investigated and the optimum condition has been determined to employ a lab-scale reactor. Due to the results of current studies using electrochemical and Fenton methods, a comparative economic-technical investigation has been provided accordingly. The results showed that under optimum operational condition by utilizing Electrochemical-Fenton process e.g. H2O2 = 25 mg/g DS (dry solid), Fe2+ = 15 mg/g DS, retention time = 20 min, electrolysis voltage = 11 V, the specific resistance to filterability (SRF) and time to filter (TTF) parameters reduction equal to 93.8% and 75.9% respectively. The occurrence mechanism of the sludge conditioning was determined by evaluation of extracellular polymeric substances (EPS), particle size distribution, zeta potential and bound water tests. The dry solids concentration of the conditioned sludge by Electrochemical-Fenton process was increased from 2.3% to 41% by dewatering employing filter press system. Furthermore, the estimated cost of conditioning using this method is 41.82 USD$/t DS, which is less than other investigated methods e.g. traditional Fenton process. It can be concluded that the results reached in this comprehensive and comparative study could be a suitable basis for further investigations regarding utilization of novel electrochemical advanced oxidation technologies for efficient sludge conditioning and dewatering purposes. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112483
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, A.C, Tehran, Iran
Recommended Citation:
Masihi H.,Badalians Gholikandi G.. Employing Electrochemical-Fenton process for conditioning and dewatering of anaerobically digested sludge: A novel approach[J]. Water Research,2018-01-01,144