Author(s): Donghui Zhou; Shiqiang Wu; Ze Wang
Linked Author(s): Wu Shiqiang
Keywords: Naerobic baffled reactor; Numerical simulation; Multi-phase flow; Flow field; Solid holdup
Abstract: In this paper, a double flow model has been used to simulate the three-dimensional flow field in the anaerobic baffled reactor. The distribution of velocity and the solid holdup in the flow field are obtained. Shown by the simulation results, the left side of the baffle plates in each reaction chamber is the down flow chamber, and the flow rate of the down flow chamber is relatively uniform. The right side of the baffle plates is the upstream chamber, and the reflux phenomenon occurs in the middle of the upper class room. Due to the role of the gas which is generated from the bottom of the reactor, the velocity of flow in the upstream area is greater than that in drop flow area. Hydraulic dead zone in the ABR reactor is relatively small, and the distribution of sludge particle is relatively uniform. Most of the sludge particles will be trapped in the respective reaction chamber without the movement of water and gas flow to the other reaction chamber. The results show that the multiphase flow field for the anaerobic baffled reactor can be obtained by use of numerical simulation.
Year: 2013