A fluidized-bed reactor: the biolift process

Badot, R.; Coulom, T.; Longeaux, N. de; Badard, M.; Sibony, J.

doi:10.2166/wst.1994.0776

Cited by 9 publications

(7 citation statements)

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“…Some of the innovative hybrid bioreactors have been successfully used for retrofitting and upgrading of existing activated sludge plants. 1 Some representative examples of laboratory-and full-scale hybrid systems are the Pegasus, 2 the Biolift reactor, 3 a hybrid biofilm airlift-activated sludge reactor 4 and an activated sludge system in which a plastic support was added to the reactor in order to promote nitrification. 5,6 The control of the suspended solid concentration and the retention of the biofilm media have been reported as the main operational problems of these technologies.…”

Section: Introductionmentioning

confidence: 99%

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Development of a membrane‐assisted hybrid bioreactor for ammonia and COD removal in wastewaters

Oyanedel

Campos

Garrido

et al. 2004

J of Chemical Tech & Biotech

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A new membrane-assisted hybrid bioreactor was developed to remove ammonia and organic matter. This system was composed of a hybrid circulating bed reactor (CBR) coupled in series to an ultrafiltration membrane module for biomass separation. The growth of biomass both in suspension and biofilms was promoted in the hybrid reactor. The system was operated for 103 days, during which a constant ammonia loading rate (ALR) was fed to the system. The COD/N-NH 4 + ratio was manipulated between 0 and 4, in order to study the effects of different organic matter concentrations on the nitrification capacity of the system. Experimental results have shown that it was feasible to operate with a membrane hybrid system attaining 99% chemical oxygen demand (

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Section: Introductionmentioning

confidence: 99%

“…21 During periods 4 and 5 a volume of suspended sludge, in the range of 150-200 cm 3 was purged daily, which caused a decrease in the VSS accumulation rate in the reactor. The solid retention time (SRT) was maintained at 35 days.…”

mentioning

confidence: 99%

Development of a membrane‐assisted hybrid bioreactor for ammonia and COD removal in wastewaters

Oyanedel

Campos

Garrido

et al. 2004

J of Chemical Tech & Biotech

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“…The BIOLIFT Fluidized-Bed system developed by OTV (Badot et al 1994) Detailed information about these innovative biofilm technologies for w ater and wastew ater treatment can be found at Bryers (2000). and Wilson et a l, (1998) have found that anaerobic fiuidized bed is m ore efiicient when used as a pretreatment step followed by conventional aerobic treatment.…”

Section: Threand-phase Fluidized Bed Biofilm Technologymentioning

confidence: 99%

“…Badot et al (1994) reported the results o f the three-phase fiuidized bed process applied to tertiary treatment in a municipal wastewater treatment plant filled with, sand (0.2-0.6 mm diameter) Polanco et al (1994). reported a use o f 6.5 anaerobic/aerobic fiuidized bed for carbonaceous removal in a municipal wastev/ater treatment plant.…”

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confidence: 99%

Biodegradation of Diesel Contaminated Wastewater Using a Three-Phase Fluidized Bed Reactor

Muñoz¹

2021

Preprint

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The use of petroleum-derived products has given rise to environmental concerns regarding hydrocarbon pollution. Therefore, the development of innovative techologies for the clean-up of contaminated sites is a challenge. This thesis is an investigation of a three-phase fluidized bed biofilm reactor, as an effective technology for biological treatment of diesel-contaminated wastewater. The three-phase fluidized bed utilized in this research consists of support media (diameter of 600 um) with biofilm, and gas phase (air at 1.0 cm/s) in up flowing liquid (feedwater at 0.02 cm/s). The reactor influent is synthetic wastewater varying in COD concentrations in the range of 550-1300 mg/l and diesel concentrations between 70 and 200 mg/L. The results indicate that diesel fuel can be removed in the reactor with efficiencies up to 100% at a hydraulic detention time of 4 hours. Good quality effluent means a good reactor performance, where 55% of the diesel fuel was removed due to biological process.

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“…These systems have been successfully used not only to upgrade low nitrifying capacity wastewater treatment plants, but also as a new technology to develop compact systems for simultaneous nitrogen and organic matter removal. Some examples of them at lab scale and full scale are: the Pegasus system (Emori et al, 1996); the biolift reactor (Badot et al, 1994), the hybrid biofilm Airlift Suspension -Activated sludge reactor (van Benthum et al, 1998), an activated sludge system in which plastic support was added to the reactor in order to promote nitrification (Münch et al, 2000), and a hybrid Circulating Bed Reactor (HYCIFLO) developed in our laboratory (Oyanedel et al, 2000). All these hybrid systems use settlers as solids separation systems.…”

Section: Introductionmentioning

confidence: 99%

A membrane assisted hybrid bioreactor for the post treatment of an anaerobic effluent from a fish canning factory

Oyanedel

Garrido

Lema

et al. 2003

Water Science and Technology

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An innovative membrane assisted hybrid bioreactor was used to treat a mixture of two streams produced in a fish canning factory: a highly loaded stream that had previously been treated in an anaerobic contact reactor, and a second stream with a relatively low COD and N concentration. Experiments were carried out during two experimental stages: an aerobic stage, which is focused in the study on the aerobic oxidation of ammonia and COD and a nitrification-denitrification stage in which the study was mainly focused on the removal of nitrogen. Results of the aerobic period pointed out that it was feasible to achieve ammonia and COD removals of around 99% at OLR of 6.5 kg COD/m3 x d and NLR of 1.8 kg N-NH4+/m3 x d. Specific nitrifying activities of up to 0.78 g N-NH4+/g protein x d and 0.25 g N-NH4+/g VSS x d, were recorded for the attached and suspended biomass, respectively. Around 50-60% of the nitrifying capacity of the reactor was a result of the nitrifying capacity of the biofilm. During the nitrification-denitrification stage 76% of nitrogen removal was attained at an NLR of 0.8 kg N-NH4+/m3 x d. The biofilm nitrifying activity was not affected by the operating conditions of the system, as a result of the preferential consumption of COD by suspended biomass in the reactor. Thus, the combination of a hybrid system, with both suspended and attached biomass, and an ultrafiltration membrane module might be an alternative for treating wastewaters in compact biological systems. The intrinsic characteristics of the system made it feasible to operate at high OLR without problems related with the settling properties of the sludge or the drop in the nitrogen conversion. There were no solids in the effluent as a result of the use of the membrane filtration module.

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A fluidized-bed reactor: the biolift process

Cited by 9 publications

References 0 publications

Development of a membrane‐assisted hybrid bioreactor for ammonia and COD removal in wastewaters

Development of a membrane‐assisted hybrid bioreactor for ammonia and COD removal in wastewaters

Biodegradation of Diesel Contaminated Wastewater Using a Three-Phase Fluidized Bed Reactor

A membrane assisted hybrid bioreactor for the post treatment of an anaerobic effluent from a fish canning factory

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