Anaerobic fluidized bed reactor with sepiolite as support for anaerobic treatment of vinasse

1992 ◽  
Vol 14 (5) ◽  
pp. 433-438 ◽  
Author(s):  
M. D. Balaguer ◽  
M. T. Vicent ◽  
J. M. Par�s
2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Ikbal Mahmud

Anaerobic treatment of wastewater with high organic and salt content but low pH (TOC, 14 g/l; salt, 150 g/l; pH,2.7) generated during an “ume boshi” manufacturing process was investigated. Five-fold-diluted “ume boshi” effluent was treated by a draw-and-fill method at a volumetric TOC (total organic carbon) loading rate of 3.0  g/l/d with a TOC removal efficiency of 75%. Five-fold-diluted “ome boshi” effluent was also treated in an anaerobic fluidized-bed reactor (AFBR) at a maximum volumetric TOC loading rate of 3.0 g/l/d, which gave almost the same results as the draw-and-fill method. However, ten-fold-diluted “ome boshi” effluent could be treated in the AFBR at a maximum volumetric TOC loading rate of 11 g/l/d with a TOC removal efficiency of 85%. The methane content in the evolved gas was high, being 70%. The red pigment in the “ome boshi” effluent was completely decolorized by the anaerobic treatment.  Key words :, Anaerobic fluidized-bed reactor, “Ume boshi”Co2+ and Ni2+ ions, decolorization


2001 ◽  
Vol 44 (6) ◽  
pp. 141-147 ◽  
Author(s):  
R. Saravanane ◽  
D. V.S. Murthy ◽  
K. Krishnaiah

Starch manufacturing industrial units, such as sago mills, both at medium and large scale, suffer from inadequate treatment and disposal problems due to high concentration of suspended solid content present in the effluent. In order to investigate the viability of treatment of sago effluent, a laboratory scale study was conducted. The treatment of sago effluent was studied in a continuous flow anaerobic fluidized bed reactor. The start-up of the reactor was carried out using a mixture of digested supernatant sewage sludge and cow dung slurry in different proportions. The effect of operating variables such as COD of the effluent, bed expansion, minimum fluidization velocity on efficiency of treatment and recovery of biogas was investigated. The treated wastewater was analysed for recycling and reuse to ensure an alternative for sustainable water resourse management. The maximum efficiency of treatment was found to be 82% and the nitrogen enriched digested sludge was recommended for agricultural use.


2000 ◽  
Vol 41 (4-5) ◽  
pp. 245-251 ◽  
Author(s):  
P. Castilla ◽  
M. Meraz ◽  
O. Monroy ◽  
A. Noyola

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.


2002 ◽  
Vol 92 (1) ◽  
pp. 77-88 ◽  
Author(s):  
Stephen W Maloney ◽  
Neal R Adrian ◽  
Robert F Hickey ◽  
Robert L Heine

2019 ◽  
Vol 31 ◽  
pp. 100817
Author(s):  
Letícia Martini Braz ◽  
Ana Beatriz Soares Aguiar ◽  
Renata Piacentini Rodriguez ◽  
Giselle Patrícia Sancinetti

2014 ◽  
Vol 39 (25) ◽  
pp. 13118-13127 ◽  
Author(s):  
Paula Rúbia Ferreira Rosa ◽  
Samantha Christine Santos ◽  
Isabel Kimiko Sakamoto ◽  
Maria Bernadete Amâncio Varesche ◽  
Edson Luiz Silva

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