2012 : PENGARUH SIMULASI PENGARUH KONSENTRASI SOLID DAN GEOMETRI BIOREAKTOR MEMBRAN TERENDAM TERHADAP PERPINDAHAN MASSA GAS-LIQUID DAN FLUKS MELALUI MEMBRAN

Prof.Ir. Ali Altway M.Sc

Prof.Dr.Ir. Sugeng Winardi M.Eng

Abstract

Hydrodynamics characteristic for the mixing of gas-solid-liquid in membrane bioreactor submerged (MBRs) and its influence on mass transfer was studied computationally at various solid concentration, incoming gas rate, and the baffle distance. Computational method was conducted by using software GAMBIT 2.1. 6. for the making of the grid which represents the calculation domain and conduct the simulation using CFD software FLUENT commercial code 6.2. 16. Multiphase flow in reactor was simulated with mixture model, while to model the turbulence characteristic of the flow standard k-ε model was used. The geometrical system investigate is bioreactor in the form of box with flat bottom, 2 baffles, submerged membrane and air passage through the reactor bottom. The membrane type used is hollow fiber, the liquid used is water, and the solid is activated sludge, and air acts as gas phase. The result indicates …