Granular, inert, activated carbon particles are employed to provide support for biomass. In this study further modification in anaerobic fluidized bed reactor namely the decrease in the total liquid volume to 3. The reactors will be marketed as fluidized bed, fixed film bioreactors for aerobic and anaerobic degradation of organic compounds in soil and in water. Nov 06, 2016 fluidized bed reactor basic mechanism, mass transfer in fluidized beds, reaction behaviour in a fluidized bed, mole balance on the bubble, the cloud, and the slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Until now, oxidation of ammonium has only been known to proceed under aerobic conditions. Application of anaerobic fluidized bed reactors in wastewater. Thus extremely high srt could be maintained irrespective of hrt. Review on the application of anaerobic fluidized bed reactors. For the catalytic cracking of petroleum naphthas to form gasoline blends, for example, the virtues of the fluidizedbed reactor drove its competitors from the market. Introduction in the technical design for anaerobic treatment. Both nitrate and ammonium consumption increased with concomitant gas production.
Fluidized bed reactor is widely applied in many industries for various applications recently. In this work, the performance of an anaerobic fluidized bed reactor afbr treating synthetic wastewater is experimentally evaluated. The aim of this study was to investigate the performance of an 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. Feb, 20 schematic configuration of anaerobic fluidized bed reactor aerobic moving bed bio reactor system aerobic moving bed bio reactor reactor designed for this section was a plexiglass column in inner diameter of 10 cm and 90 cm height, which 60 cm of its 4. Due to increasing importance of treatment of wastewater in fbr critical examinations of the. The maximum concentration of the gases recorded at 8 h hrt corresponded to the favourable operating environment and good system stability ratio vfaalkalinity pdf.
The anaerobic fluidized bed reactor afbr showed an excellent performance and attained steady state conditions with cod removal of 90% after 80 days. Fluidized bed reactor 3 and esthetical reasons as dyes impede light penetration, damage the quality of the receiving streams and are toxic to food chain organisms. Anaerobic membrane bioreactors have potential for energyefficient treatment of domestic and other wastewaters, membrane fouling being a major hurdle to application. Anaerobic fluidized bed membrane bioreactors for the. The reactor used this study was made of a plexiglass column being 60 mm diameter, 140 cm height, and a. A novel metabolic pathway for anaerobic ammonium oxidation with nitrite as. Fluidized bed reactor basic mechanism, mass transfer in fluidized beds, reaction behaviour in a fluidized bed, mole balance on the bubble, the cloud, and the slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Anaerobic fluidized membrane bioreactor the anaerobic fluidized membrane bioreactor afmbr is a novel emerging technology that combines the properties of anaerobic fluidized bed reactor afbr and submerged membrane filtration.
Anaerobic treatment methods are more suitable for the treatment of concentrated wastewater streams, offer lower operating costs, the production of usable biogas product. In the fluidized bed reactor, the maximum contact between the liquid and the support material minimizes the formation of preferential channels and gas retention as the shear stress optimize the biological film thickness. The work involves experimental investigation on biological denitrification in a fluidized bed reactor under anaerobic conditions using the microorganism pseudomonas stutzeri and plastic beads as fluidizing medium. Biohydrogen production from soft drink industry wastewater in. Mar 14, 2006 diesel fuel spills have a major impact on the quality of groundwater. Stateoftheart of anaerobic digestion technology for. Design and startup of an anaerobic fluidized bed reactor. Autotrophic growth of anaerobic ammoniumoxidizing micro.
Fluidized bed reactor fbr in order to achieve fluidization of the biomass particles, units must be operated in an upflow mode. Box 1, 2600 ma delft the netherlands received november 20, 1988 b37 abstract since the early 70s, anaerobic treatment of industrial wastewaters has gained. In conclusion it appears that the anaerobic fluid bed process seems to be able to withstand shocks of either t, ph, or cod. 87 98, january march, 2012 evaluation of anaerobic phenol degradation in batch reactors the experiments for evaluating the potential of. Consequently, a detailed design of a fluidized bed reactor that would allow flexible operation at high temperature and high pressure at several gas velocities will be conducted in order to serve for the future development of new hydrodynamic models. Fluidized bed reactors for anaerobic wastewater treatment. The anaerobic fluidized bed membrane bioreactor afmbr is a new energyneutral methanogenic biological treatment system that combines an anaerobic fluidized bed reactor afbr and internal membranes. The fluidizedbed bioreactor fbbr is an application of the ls fluidized bed. 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. Anaerobic fluidized bed systems how is anaerobic fluidized. Pdf metabolic pathway of anaerobic ammonium oxidation on. The team will utilize existing reactors designed in previous years and evaluate performance based upon the design influent flow rate, hydraulic retention time, biogas yield and cod removal efficiency. Fluidization occurs when small solid particles are suspended in an upward.
Few studies have been carried out on how the use of multiple and complex substrates affects the degradation processes in a mixed anaerobic community developed inside a fluidized bed reactor borja et al. Anaerobic ammonium oxidation discovered in a denitrifying. Factors affecting biogas production during anaerobic. The results are in agreement with the ones obtained using a mixture of municipal and food processing wastewaters containing high organic contents. The reactor was made of a plexiglass column 60 mm in diameter, 140 cm in height, with a volume of 3.
Theoretically, the maximum hydrogen yield hy is 4 mol h 2. The fluidized bed reactor in the anaerobic treatment of. It was found that fouling can be controlled if membranes are placed directly in contact with the granular activated carbon gac in an anaerobic fluidized bed bioreactor afmbr used here for posttreatment of effluent from. Treatment of textile wastewater with an anaerobic fluidized.
The maximum concentration of the gases recorded at 8 h hrt corresponded to the favourable operating environment and good system stability ratio vfaalkalinity anaerobic decomposition, brewery wastewater, fluidized bed reactor, biogas, carbon iv oxide. Anaerobic fluidized bed membrane bioreactor for wastewater. Rate of liquid flow and the resulting degree of bed expansion determines whether the reactor is termed a fluidized bed or expanded bed system. Anaerobic biodegradation of diesel fuelcontaminated. University of groningen particle transport in fluidized beds. The anaerobic fluidized bed membrane bioreactor for energyefficient wastewater reuse subject presentation by perry mccarty, stanford university, at the hydrogen, hydrocarbons, and bioproduct precursors from wastewaters workshop held march 18 19, 2015.
Fluidized bed reactor an overview linkedin slideshare. Phenol degradation in an anaerobic fluidized bed reactor packed with low density support materials 89 brazilian journal of chemical engineering vol. Anaerobic up flow fluidized bed reactor performance as a. Box 1, 2600 ma delft the netherlands received november 20, 1988 b37 abstract since the early 70s, anaerobic treatment of industrial wastewaters has. Review wastewater treatment by anaerobic fluidized membrane. But somehow, under most bioreactor design and operation conditions the maximum possible hydrogen yield hy. Expanded bed reactors have a bed expansion of 10% to. Review on the application of anaerobic fluidized bed. The fluidized bed bioreactor fbbr is an application of the ls fluidized bed. The aim of the present work is the performance evaluation of a fluidized bed reactor in the anaerobic treatment of a wastewater deriving from the washing operations of the wine industry. A fluidized bed reactor fbr is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. The aim of this study was to investigate the performance of an anaerobic fluidized bed reactor afbraerobic moving bed bio reactor mbbr in series arrangement to treat currant wastewater. The anaerobic fluidized bed afb team was created to work within the wastewater subteam to operate and analyze benchscale anaerobic reactors.
Startup of anaerobic fluidized bed reactors with acetic. Startup of an anaerobic fluidized bed reactor for landfill. The microbes attach to the fluidized media and form a. The anaerobic fluidized bed membrane bioreactor for energy. The reactor used this study was made of a plexiglass column being 60 mm diameter, 140 cm height, and a volume of 3.
Posttreatment of anaerobic sulphide and ammonia containing effluents from methane fermentations in highrate fluidized bed reactors on laboratory and pilotplant scale, in proc. After the description of the characteristics of threephase fluidized bed and theoretical aspects which could affect the operation of an anaerobic reactor, the design considerations and recommendations based upon characteristics of the wastewater to be. Fluidized bed reactors have been used and design for different physical and chemical process for example, catalytic cracking, fluid transportation and drying. The anaerobic fluidized bed and the expanded granular sludge bed reactors, with hrts of about 24 h and the uasb reactor, with an hrt of 48 h offer good results, while the attached growth process named anaerobic filter needs a longer hrt on assuming constant organic loading rates for all systems. The anaerobic fluidized bed biofilm reactor afbbr, which uses small, fluidized media for cell immobilization and retention, is a recent process innovation in wastewater treatment. The anaerobic fluidized bed reactor afbr corresponds to a high rate system with adhered microbial growth.
Results are presented on pilot and fullscale pretreatment of industrial wastewater in an anaerobic 2state fluidized bed reactor for ch4production and laboratory and pilot scale posttreatment. Pdf investigation of anaerobic fluidized bed reactor. The effect of upflow velocity on performance and biofilm characteristics of an anaerobic fluidized bed reactor was studied in treating currant wastewater at various loading rates. University of groningen particle transport in fluidized. Uasbaf able to retain very high concentration of active biomass in the reactor. Wastewater treatment in anaerobic fluidized bed reactors in table 1 the laboratory and pilot results of anaerobic fluidized bed reactors have been summarized with respect to soluble cod removal. Metabolic pathway of anaerobic ammonium oxidation on the basis of 15 n studies in a fluidized bed reactor astrid a. Cod in the effluent of anaerobic reactors processing domestic sewage. The fluidizedbed reactor has the ability to process large volumes of fluid. Influence of upflow velocity on performance and biofilm.
Anaerobic fluidized bed afb reactor aguaclara dashboard. May 20, 2017 the anaerobic fluidized bed afb team was created to work within the wastewater subteam to operate and analyze benchscale anaerobic reactors. In this type of reactor, a fluid gas or liquid is passed through a solid granular 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. A fluidized bed reactor fbr with activated carbon as support material has been used to investigate the removal efficiency of chemical oxygen demand cod. Nov 25, 2014 the effect of upflow velocity on performance and biofilm characteristics of an anaerobic fluidized bed reactor was studied in treating currant wastewater at various loading rates. Kinetics of an anaerobic fluidized bed reactor using biolite. Metabolic pathway of anaerobic ammonium oxidation on the. Pdf design and startup of an anaerobic fluidized bed. The startup of anaerobic fluidized bed reactors, which use manville r. Anaerobic sequencing batch reactor asbr anaerobic contact process anaerobic filter af upflow anaerobic slugde blanket uasb fluidized bed reactor hybrid reactor. Fluidizedbed bioreactor applications for biological. Biogas production in the reactor continuously increased and its average yield y gas was defined as 0. The microbes attach to the fluidized media and form a biofilm on the surface. The influence of various parameters like ph, initial nitrate concentration, carbonnitrogen ratio.
Basic design of a fluidized bed reactor for wastewater. Review wastewater treatment by anaerobic fluidized. The anaerobic fluidized bed membrane bioreactor afmbr is a new energyneutral methanogenic biological treatment system that combines an anaerobic fluidized bed reactor afbr and. Investigation of anaerobic fluidized bed reactor aerobic. These bioreactors can be run in a single or double column system, depending on the treatment process being carried out. Anaerobic fluidized bed treatment of an industrial wastewater. Metabolic pathway of anaerobic ammonium oxidation on the basis of 15n studies in a fluidized bed reactor. This eventually resulted in a decrease in biofilm microbial activity and the need for higher pumping rates to maintain the same degree of bed expansion. Biohydrogen production by modified anaerobic fluidized bed. In addition to higher treatment efficiency, longterm operation with. Total microbial count was conducted on the reactor sample water. Application of anaerobic fluidized bed reactors in. The fluidized bed reactor in the anaerobic treatment of wine.
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