Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

SIMULATION OF HYDRODYNAMICS AND MASS TRANSFER IN MEMBRANE BIOREACTOR FOR PHOTO-BIOHYDROGEN PRODUCTION WITH LATTICE BOLTZMANN METHOD

Get access (open in a dialog) DOI: 10.1615/IHTC16.cat.023499
pages 1615-1634

Abstrakt

A lattice Boltzmann model for porous media is adopted to simulate the hydrodynamics and mass transfer in micro-channel bioreactor for biological wastewater treatment. In the simulation, the biofilm with porous structure is studied at representative elementary volume scale, and local grid refinement is applied in the biofilm region with multi-block scheme to ensure the computational stability and accuracy. The effects of porosity and permeability of biofilm are investigated with the aim of enhancing transportation and biodegradation, as well as biodegradation performance is evaluated by substrate consumption efficiency. The simulation results indicate that biodegradation performance is mainly affected by porosity of biofilm for lower Darcy number, and it increases with increasing porosity. However, the effect of porosity becomes not obvious and the leading factor is permeability for larger Darcy number, and the consumption efficiency decreases with increasing permeability, which provides guidance to the design of photobioreactor for efficient hydrogen production.