DOI: 10.1016/j.watres.2018.03.067
Scopus记录号: 2-s2.0-85047421046
论文题名: CFD simulation of fluid dynamic and biokinetic processes within activated sludge reactors under intermittent aeration regime
作者: Sánchez F. ; Rey H. ; Viedma A. ; Nicolás-Pérez F. ; Kaiser A.S. ; Martínez M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139 起始页码: 47
结束页码: 57
语种: 英语
英文关键词: ASM1
; CFD
; Intermittent aeration
; WWTP
Scopus关键词: Air
; Bioinformatics
; Energy utilization
; Activated sludge reactors
; ASM1
; Biological process
; Biological reactor
; Biological simulation
; Intermittent aeration
; Minimum energy consumption
; WWTP
; Computational fluid dynamics
; ammonia
; dissolved oxygen
; activated sludge
; aeration
; bioreactor
; computational fluid dynamics
; efficiency measurement
; kinetics
; optimization
; performance assessment
; wastewater
; wastewater treatment plant
; activated sludge
; aeration
; airflow
; Article
; biological phenomena and functions concerning the entire organism
; computational fluid dynamics
; effluent
; energy consumption
; oxygen consumption
; oxygen saturation
; priority journal
; simulation
; software
; bioreactor
; hydrodynamics
; procedures
; sewage
; theoretical model
; Bioreactors
; Hydrodynamics
; Models, Theoretical
; Sewage
; Waste Disposal, Fluid
英文摘要: Due to the aeration system, biological reactors are the most energy-consuming facilities of convectional WWTPs. Many biological reactors work under intermittent aeration regime; the optimization of the aeration process (air diffuser layout, air flow rate per diffuser, aeration length …) is necessary to ensure an efficient performance; satisfying the effluent requirements with the minimum energy consumption. This work develops a CFD modelling of an activated sludge reactor (ASR) which works under intermittent aeration regime. The model considers the fluid dynamic and biological processes within the ASR. The biological simulation, which is transient, takes into account the intermittent aeration regime. The CFD modelling is employed for the selection of the aeration system of an ASR. Two different aeration configurations are simulated. The model evaluates the aeration power consumption necessary to satisfy the effluent requirements. An improvement of 2.8% in terms of energy consumption is achieved by modifying the air diffuser layout. An analysis of the influence of the air flow rate per diffuser on the ASR performance is carried out. The results show a reduction of 14.5% in the energy consumption of the aeration system when the air flow rate per diffuser is reduced. The model provides an insight into the aeration inefficiencies produced within ASRs. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112750
Appears in Collections: 气候减缓与适应
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作者单位: Departamento de Ingeniería Térmica y de Fluidos, Universidad Politécnica de Cartagena, Dr. Fleming, s/n, 30202, Cartagena, Spain; Instituto de Ingeniería del Agua y Medio Ambiente, Universitat Politècnica de València, Camino de Vera 14, P.O. Box 46022, Valencia, Spain; Prointec S.A., C/ De San Julián nº1, Alcobendas, Madrid 28108, Spain; Lynx Simulations S.L., Calderón de la Barca 31, Bullas, 30180, Spain
Recommended Citation:
Sánchez F.,Rey H.,Viedma A.,et al. CFD simulation of fluid dynamic and biokinetic processes within activated sludge reactors under intermittent aeration regime[J]. Water Research,2018-01-01,139