Determination of the optimal operational parameters for a three-phase fluidised bed bioreactor with a light biomass support when used in treatment of phenolic wastewaters

Aerobic treatment of wastewaters in the inverse fluidised bed biofilm reactor

“…In a reactor with low density particles, fluidisation can be conducted either by an upward cocurrent flow of gas and liquid through a bed or by a downward flow of liquid and countercurrent upward flow of gas ( Fig. 1) [1,8]. In the former, fluidisation is achieved by an upward flow of gas whereby the gas bubbles make the bed expanding downwards into the less dense mixture of gas and liquid [1,8].…”

“…1) [1,8]. In the former, fluidisation is achieved by an upward flow of gas whereby the gas bubbles make the bed expanding downwards into the less dense mixture of gas and liquid [1,8]. In the latter, the bed is fluidised by a downward flow of a liquid counter to the net buoyancy force of the particles [7,9,10].…”

“…The application of a low density (matrix particle density smaller than that of liquid) biomass support in a reactor allows the control of biomass loading on particles and provides the high oxygen concentration in the reacting liquid media [1,[7][8][9]. In a reactor with low density particles, fluidisation can be conducted either by an upward cocurrent flow of gas and liquid through a bed or by a downward flow of liquid and countercurrent upward flow of gas ( Fig.…”

“…Treatment of industrial wastewaters requires a great deal of space when using systems based on activated sludge in which the retention time is many days [3][4][5]. On the other hand, a fluidised bed biofilm reactor (FBBR) is capable of achieving treatment in low retention time because of the high biomass concentrations that can be achieved in a reactor [1,3,5]. The bed, consisting of small particles, offers a vast surface area for microbial growth in the state of fluidisation.…”

“…The application of a fluidised bed technique to biological wastewater treatment has brought a remark breakthrough [1][2][3][4][5][6]. Treatment of industrial wastewaters requires a great deal of space when using systems based on activated sludge in which the retention time is many days [3][4][5].…”