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anaerobic fluidized bed reactor Description

Anaerobic ammonium oxidation discovered in a denitrifying ...

Abstract. Until now, oxidation of ammonium has only been known to proceed under aerobic conditions. Recently, we observed that NH 4 + was disappearing from a denitrifying fluidized bed reactor treating effluent from a methanogenic reactor. Both nitrate and ammonium consumption increased with concomitant gas production.

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(PDF) Autotrophic growth of anaerobic ammonium-oxidizing ...

9/4/2020· The conversion rate of the enrichment culture in a fluidized bed reactor was 3 kg NH4+ m-3 d-1 when fed with 30 mM NH4+. This is equivalent to a specific anaerobic .

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A novel fast mass transfer anaerobic inner loop fluidized ...

In this paper, a fast mass transfer anaerobic inner loop fluidized bed biofilm reactor (ILFBBR) was developed to improve purified terephthalic acid (PTA) wastewater treatment. The emphasis of this study was on the start-up mode of the anaerobic ILFBBR, the hydraulic loadings and the operation stability.

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Fluidized Aerobic BioReactor | 21st century enviro ...

fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a granular solid material (usually a catalyst possibly shaped as tiny spheres) at high enough velocities to suspend the solid and cause it to behave as though it were a fluid.

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Anaerobic ammonium oxidation discovered in a denitrifying ...

3/1/1995· Effect of the occurrence of anaerobic ammonium oxidation on day 420 on the gas production by the denitrifying fluidized bed reactor. Day 350-420: the last part of the first period. Day 420-560: the second period of the run, when ammonium conversion and additional nitrate reduction increased simultaneously, causing increase in gas production.

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Treatment of phenol in an anaerobic fluidized bed reactor ...

Results of this study describe the feasibility of anaerobic treatment of highly concentrated phenol synthetic wastewater using an anaerobic fluidized bed reactor (AFBR) in both continuous and batch modes. Wastewater with a maximum load of 2,100 mg C·l−1 was prepared using phenol (maximum concentration of 1,600 mg C·l−1) as substrate and a mixture of acetic, propionic and butyric acids ...

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Experimental and theoretical investigation of anaerobic ...

The aim of this work is to study the anaerobic treatment of a synthetic substrate using a fluidized bed reactor containing microorganisms inmobilized on sand particles and adjust an AFBR model from laboratory scale experimental data with emphasis on the evaluation of substrate utilization and gas production rates and pH evolution under ...

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EXPERIMENTAL AND THEORETICAL INVESTIGATION OF ANAEROBIC .

characteristics such as holdups and the bed height during a biological transient. The aim of this work is to study the anaerobic treatment of a synthetic substrate using a fluidized bed reactor containing microorganisms inmobilized on sand particles and adjust an AFBR model from laboratory scale experimental data with emphasis on the evaluation of

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Anaerobic fluidized bed reactor application to tropical ...

The influence of the organic loading rate (OLR), the fluidization level (FL) and the particle diameter of natural zeolite used as support (D P), was evaluated at a laboratory scale anaerobic fluidized bed reactor (AFBR), treating tropical fruit wine effluent (vinasse).The experiment was carried out at an OLR from 2–5 kg COD/m 3 d, FL of 20 and 40% and D P from 0.25 to 0.80 mm.

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anaerobic reactors UASB AF HAF EGSB expanded granular ...

These systems in effect become fluidized-bed reactors without a weighting agent. Their success requires the occurrence of granulation of the biomass and a highly efficient solids-liquid-gas separator. ... to placement only in the upper 50 percent to 70 percent of the reactor height (hybrid anaerobic filter). Almost all upflow fixed-media ...

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Influence of upflow velocity on performance and biofilm ...

Anaerobic Fluidized bed reactor. The reactor was made of a plexiglass column being 60 mm diameter, 140 cm height, and a volume of 3.95 L. The enlarged top section of .

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What Is an Anaerobic Reactor? (with pictures)

9/7/2020· There are a number of different filters used in anaerobic reactors. Fluidized bed units use sand or plastic granules. Upflow and downflow filters use pebbles, stones or porous plastic sheets. These fixed films create the anaerobic conditions needed to break apart the organic compounds.

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Fluidized bed reactor - Wikipedia

2/13/2013· Anaerobic Fluidized bed reactor. The reactor was made of a plexiglass column 60 mm in diameter, 140 cm in height, with a volume of 3.95 l and the enlarged top section was used as a gas–solid separator (Fig. 1).The recycle flow was drawn from the top section using a Circulator Pump_ and then fed upward into the reactor.Reactor temperature was controlled by Aquarium Heater at 35±2°C.

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Chapter 4 - Methane production

A diagram of an anaerobic fluidized-bed process is shown in Fig. 4-4 (C). In such systems, the medium to which the microbes adhere is fluidized within the reactor, resulting in conversion of organic materials to CH 4 and CO 2. Anaerobic microbes grow on the surface of the medium, expanding the apparent volume of the medium; hence this reactor ...

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What Is an Anaerobic Reactor? (with pictures)

9/7/2020· There are a number of different filters used in anaerobic reactors. Fluidized bed units use sand or plastic granules. Upflow and downflow filters use pebbles, stones or porous plastic sheets. These fixed films create the anaerobic conditions needed to break apart the organic compounds.

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Anaerobic fluidized bed whey treatment - Boening - 1982 ...

Anaerobic treatment of moderate strength lactic casein why permeate [2000–7000 mg/L soluble chemical oxygen demand (SCOD)] is possible in fluidized bed .

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CN102745809A - Anaerobic fluidized bed reactor - Google ...

The invention discloses an anaerobic fluidized bed reactor, characterized in that: the anaerobic fluidized bed reactor is a two-section cylinder which is thin above and thick below, the upper section is connected with the lower section through a taper transition section, a completly mixed reaction zone and a plug flow reaction zone are arranged in the reactor from bottom to top, a guide ...

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Chapter 7 Anaerobic Reactor Technologies

Anaerobic sequencing batch reactor (ASBR) Anaerobic packed bed or anaerobic filter Anaerobic fluidized and expanded bed reactors Upflow anaerobic sludge blanket (UASB) reactor Anaerobic baffled reactor (ABR) High -rate anaerobic reactors Completely mixed AD Completely mixed reactor with no solids recycle in which the SRT equals the HRT.

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Application of anaerobic fluidized bed reactors in ...

5/1/2000· In this review, attention is paid to highlighting the conceptual and full scale developments of anaerobic fluidized bed reactors, in respect of process performance, design concepts, start‐up of the reactor, stability of the system with respect to various operating parameters, reactor configurations, comparison with competing reactor designs ...

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The Anaerobic Fluidized Bed Membrane Bioreactor for Energy ...

Staged Anaerobic Fluidized MBR (SAF-MBR) Kim et al., Environ. Science & Technology, 45:576(2011) Influent TCOD 523 mg/L Recycle Permeate Effluent TCOD 60 mg/L GAC Particles First Stage with membrane Second Stage Influent Methane Methane Recycle Effluent Permeate . Fluidized Bed Reactor Membrane Bioreactor Membranes 12 m3/day (6 h HRT) SAF-MBR ...

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