Simulation of fluid and shear stress behaviors in reciprocating membrane bioreactors for fouling control using fluid-structure interaction analysis
- Authors
- Jang, Yongsun; Ryoo, Hwa-Soo; Shin, Yong-Cheol; Park, Hee-deung
- Issue Date
- 1-8월-2022
- Publisher
- ELSEVIER
- Keywords
- Membrane bioreactor; Membrane fouling; Reciprocation; Fluid-structure interaction; Simulation
- Citation
- SEPARATION AND PURIFICATION TECHNOLOGY, v.294
- Indexed
- SCIE
SCOPUS
- Journal Title
- SEPARATION AND PURIFICATION TECHNOLOGY
- Volume
- 294
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/142879
- DOI
- 10.1016/j.seppur.2022.121220
- ISSN
- 1383-5866
- Abstract
- In this study, fluid-structure interaction simulations of a reciprocating membrane bioreactor were performed under various conditions. The reactor and membrane module were configured in a reactor-scale. The shear stress on the tensioned membrane is governed by the fluids it repels. With reciprocating speeds of 10, 20, and 30 cm/s, the maximum shear stresses within one cycle were 3.03, 3.74, and 1.14 N/m(2), respectively. Excessively high speed prevented the fluid from accelerating and dispersing, resulting in a low shear stress. For triangle, sine, and square motions, the maximum shear stresses were 0.92, 3.74 and 4.36 N/m(2), respectively. This suggests that both acceleration and deceleration in motion are critical for generating high shear stress. When the slack increased from 0 to 0.5 and 1%, the maximum shear stress decreased from 3.74 to 2.11 and 1.2 N/m(2), respectively, owing to the decrease in membrane tension. The results of this study should be considered when attempting to increase fouling removal effects reciprocating membrane bioreactor.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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