Simulation and Research of CFD on Internal Pressure Parallel Hollow Fiber Membrane Module

EasyChair Preprint 799

Abstract

Membrane bioreactor (MBR) has been widely used in sewage treatment, effectively solving many long-standing problems such as solid-liquid separation. In this paper, the internal pressure parallel type hollow fiber membrane module was taken as the research object. Based on the CFD theory and method, the solid-liquid separation of the flow entering the membrane module was simulated by FLUENT software. Firstly, the geometric model of the internal pressure parallel membrane module was established by the computational fluid dynamics (CFD) preprocessor and structured meshing was performed. Then the volume fraction of suspended solid (SS) at the exit of the model was calculated by Eulerian multi-phase flow model and Phase Coupled SIMPLE algorithm. The calculation results were presented as images in the CFD post processor. In this paper, the simulation calculation for different concentrations of suspended solid showed that the volume fraction of suspended solid at the exit of the model was zero, which was consistent with the actual MBR system operating data. The simulation results indicated that the model established in this paper had higher accuracy. The model can simulate and predict the separation effect of solid-liquid two-phase flow in wastewater treatment, which has certain reference value for MBR engineering design and research.

Keyphrases: CFD, Eulerian multi-phase flow model, MBR, solid-liquid separation, ss

@booklet{EasyChair:799,
  author    = {Xiaohan Sun and Chunqing Li},
  title     = {Simulation and Research of CFD on Internal Pressure Parallel Hollow Fiber Membrane Module},
  howpublished = {EasyChair Preprint 799},
  year      = {EasyChair, 2019}}