Simultaneous sulfide and acetate oxidation under denitrifying conditions using an inverse fluidized bed reactor

2008 ◽  
Vol 83 (9) ◽  
pp. 1197-1203 ◽  
Author(s):  
Ricardo Beristain-Cardoso ◽  
Anne-Claire Texier ◽  
Reyes Sierra-Álvarez ◽  
Jim A Field ◽  
Elías Razo-Flores ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Acetate Oxidation ◽  
Inverse Fluidized Bed

CFD study of the hydrodynamics and biofilm growth effect of an anaerobic inverse fluidized bed reactor operating in the laminar regime

2020 ◽  
pp. 104674
Author(s):  
Jorge Ramírez-Muñoz ◽  
Román Guadarrama-Pérez ◽  
Alejandro Alvarado-Lassman ◽  
José J. Valencia-López ◽  
Valaur E. Márquez-Baños
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Growth Effect ◽  
Laminar Regime ◽  
Biofilm Growth ◽  
Inverse Fluidized Bed ◽  
Reactor Operating

Anaerobic treatment of low concentration waste water in an inverse fluidized bed reactor

2000 ◽  
Vol 41 (4-5) ◽  
pp. 245-251 ◽  
Author(s):  
P. Castilla ◽  
M. Meraz ◽  
O. Monroy ◽  
A. Noyola
Keyword(s):  
Fluidized Bed ◽  
Removal Efficiency ◽  
Suspended Solids ◽  
Municipal Wastewater ◽  
Specific Activity ◽  
Biomass Concentration ◽  
Fluidized Bed Reactor ◽  
Anaerobic Treatment ◽  
Low Concentration ◽  
Inverse Fluidized Bed

Low concentration synthetic and municipal wastewaters were treated at HRT as short as 3 and 0.6 h respectively in an anaerobic inverse fluidized bed. Both bioreactors showed gas hold up due to the liquid downflow pattern of the prototype. The bioreactor operated at 3 h had a removal efficiency of 83%, specific activity of 4.5 kg CODremoved/kg IVS (d and the gas hold up varied from 23 to 55%. The reactor treating municipal wastewater had a removal efficiency of 44% when operating at 0.6 h, the specific activity was 4.2 kg CODremoved/kg IVS (d and no biogas was detected apparently because an important fraction was dissolved in the liquid phase. The biomass concentration was 13.8 and 1.1 kg IVS/m3 for synthetic and municipal wastewater and the SEM microphotographs showed a bacterial diversity for the first run and only cocci cells for the second run. The system does not remove suspended solids, so a polishing postreatment to improve water quality has to be implemented.

Simultaneous sulfide and acetate oxidation in a denitrifying fluidized bed reactor—II. Measurements of activities and conversion

1988 ◽  
Vol 22 (9) ◽  
pp. 1085-1092 ◽  
Author(s):  
Peter J.F. Gommers ◽  
Willem Buleveld ◽  
Ferry J.M. Zuijderwijk ◽  
J. Gijs Kuenen
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Acetate Oxidation

Simultaneous removal of carbon and nitrogen in an anaerobic inverse fluidized bed reactor

2006 ◽  
Vol 54 (2) ◽  
pp. 111-117 ◽  
Author(s):  
A. Alvarado-Lassman ◽  
E. Rustrián ◽  
M.A. García-Alvarado ◽  
E. Houbron
Keyword(s):  
Anaerobic Digestion ◽  
Carbon Source ◽  
Gas Phase ◽  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Synthetic Wastewater ◽  
Simultaneous Removal ◽  
Batch Experiments ◽  
Carbon And Nitrogen ◽  
Inverse Fluidized Bed

The evaluation of simultaneous removal of carbon and nitrogen in an anaerobic inverse fluidized bed reactor is described. Continuous and batch experiments were used, with synthetic wastewater and glucose as the carbon source with two different nitrate concentrations of 100 and 250 mg N-NO3/L. The evolution of substrates and the concentrations of intermediary products in the gas phase were followed. Results indicate that the use of the biofilm in the inverse fluidized bed reactor allows the expression of denitrification and methanization activities simultaneously without physical or time separation. The removal of nitrogen with both the feeding of 100 and 250 mgN-NO3/L was higher than 90%, while the removal of carbon was 65% on average for the feeding with 100 mgN-NO3/L and 70% on average for the feeding with 250 mg N-NO3/L. This carbon degradation is equivalent to that obtained during the operation of the reactor in the period previous to the nitrate feeding. It was found that by using high values of the COD/N ratio, the dissimilative reduction of nitrates is favoured. Denitrification and anaerobic digestion occurs simultaneously under low values of COD/N.

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