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Numerical optimization of membrane module design and operation for a full-scale submerged MBR by computational fluid dynamics.(Report)

Liu, Mengmeng ; Yang, Min ; Chen, Meixue ; Yu, Dawei ; Zheng, Jiaxi ; Chang, Jiang ; Wang, Xiaoshuang ; Ji, Chunmiao ; Wei, Yuansong

Bioresource Technology, 2018, Vol.269, p.300 [Tạp chí có phản biện]

ISSN: 0960-8524 ; DOI: 10.1016/j.biortech.2018.08.089

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  • Nhan đề:
    Numerical optimization of membrane module design and operation for a full-scale submerged MBR by computational fluid dynamics.(Report)
  • Tác giả: Liu, Mengmeng ; Yang, Min ; Chen, Meixue ; Yu, Dawei ; Zheng, Jiaxi ; Chang, Jiang ; Wang, Xiaoshuang ; Ji, Chunmiao ; Wei, Yuansong
  • Chủ đề: Water Pollution – Analysis ; Control Systems – Analysis ; Tracers (Biology) – Analysis ; Fluid Dynamics – Analysis ; Pollution Control – Analysis ; Lithium Compounds – Analysis
  • Là 1 phần của: Bioresource Technology, 2018, Vol.269, p.300
  • Mô tả: To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1016/j.biortech.2018.08.089 Byline: Mengmeng Liu (a,b,c,1), Min Yang (a,b,d,1), Meixue Chen (a,c), Dawei Yu (a,c), Jiaxi Zheng (a,b), Jiang Chang (e), Xiaoshuang Wang (e), Chunmiao Ji (e), Yuansong Wei [yswei@rcees.ac.cn] (a,b,c,*) Keywords MBR; CFD simulation; RTD; Aeration; Shear stress Highlights * Hydrodynamics distribution of a full-scale sMBR was simulated by CFD with viscosity. * Membrane module design & operation parameters such as d, h.sub.m, h.sub.f, SAD.sub.p were optimized. * The CFD model was validated by RTD curves of lithium chloride tracer experiments. Abstract The hydrodynamics in the membrane module of a full-scale sMBR at 500 m.sup.3/d was simulated by computational fluid dynamics (CFD) in this study. Several key indexes, including membrane distance (d), aeration design, height of gas-liquid dispersion h.sub.m, and freeboard height h.sub.f and operational conditions, including SAD.sub.p and liquid viscosity, were optimized through investigating their impacts on water velocity distribution and membrane shear stress. The CFD model was validated by comparing the simulated trace element RTD curves with experimental results. The optimal design and operational parameters for the full scale sMBR are as following: membrane distance d = 35 mm, air diffusers parallel located 75--100 mm under the bottom of the membrane module, the free board height h.sub.f adjusted to 400 mm, and the SAD.sub.p recommended as 20 in the full-scale MBR studied. Author Affiliation: (a) State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China (b) University of Chinese Academy of Sciences, Beijing 100049, China (c) Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China (d) School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410114, China (e) Beijing Drainage Group Co. Ltd., Beijing 100044, China * Corresponding author at: 18 Shuangqing Road, Haidian District, Beijing 100085, China. Article History: Received 30 June 2018; Revised 18 August 2018; Accepted 20 August 2018 (footnote)1 Mengmeng Liu and Min Yang contributed equally to this work.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0960-8524 ; DOI: 10.1016/j.biortech.2018.08.089

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