Treatment of domestic wastewater using an anaerobic. An abr divided in four equal volume compartments total volume 4l and operated at 35. A comparative study of anaerobic fixed film baffled. The reactor was made of a plexiglass column 60 mm in diameter, 140 cm in height, with a volume of 3. Zain2 1civil engineering department, universiti teknologi petronas, malaysia 2department of civil and structural engineering, universiti kebangsaan malaysia, malaysia. This technology has been successfully implemented at fullscale multiple installations in the united states and canada as a waste treatment and energy production technology, but the physical processes necessary to further optimize the system.
The anaerobic baffled reactor abr could be a valuable alternative to conventional septic tanks. After more than 2 years of operation, a successful anaerobic treatment of these effluents was achieved, without fat removal prior to the anaerobic reactor. Anaerobic packed bed reactor the anaerobic packed bed reactor fig. The filter material typically occupies 60%70% of the reactor volume. The increased contact time with the active biomass sludge results in improved treatment. Effects of media design on anaerobic filter performance mohamed fituri dahab iowa state university. Sean moran, in an applied guide to water and effluent treatment plant design, 2018. The anaerobic baffled reactor is a high rate digester comprising a series of alternating and standing baffles in each compartment. Orange county sanitation district anaerobic baffled reactor. An anaerobic filter is a fixedbed biological reactor with one or more filtration chambers in series. After the initial stage of operation with glucose as the sole source of energy, the reactor was gradually fed with phenol s a carbon source. Codch conversion during steadystate anaerobic filter treatment. Fundamentals of operation of the induced bed reactor ibr. An application of anaerobic baffled reactor to produce biogas.
The anaerobic fluidized bed membrane bioreactor for energy. Effect of hrt on the biodegradability of textile wastewater in an anaerobic baffled reactor bhuvaneswari. A fluidized bed reactor fbr is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. Uasbaf able to retain very high concentration of active biomass in the reactor. Hybrid anaerobic baffled reactor how is hybrid anaerobic. An appropriate technology for onsite sanitation km foxon1, s pillay2, t lalbahadur3, n rodda2, f holder3 and ca buckley1 1pollution research group, school of chemical engineering, university of kwazulunatal, durban 4041, south africa. As wastewater flows through the filter, particles are. Performance of anaerobic baffled reactor for biodegradation. The baffles divide the reactor into eight different compartments with a total working volume of 7. Introduction in the technical design for anaerobic treatment. An anaerobic baffled reactor abr is a wastewater treatment technology that uses baffles to create multiple treatment zones in a primary clarifier. Mathematical modelling of cassava wastewater treatment. An anaerobic baffled reactor abr is an improved septic tank with a series of. The reactor also has good solids retention, and requires low maintenance and operational attentions.
The performance of an anaerobic baffled reactor abr was evaluated in the treatment of cassava wastewater, a pollutant residue. Hybrid anaerobic baffled reactor for treatment of desizing. The fall 2016 anaerobic fluidized bed reactor afb group is focused on assessing the treatment capabilities of an afb reactor through the removal of chemical oxygen demand cod and the production of biogas. Hybrid anaerobic baffled reactor how is hybrid anaerobic baffled reactor abbreviated. Developed by mccarty and coworkers at stanford university, the abr was described as a series of upflow anaerobic sludge blanket reactors uasbs because it is divided into several compartments 3, 5, 16. Investigation of anaerobic fluidized bed reactor aerobic. Orange county sanitation district anaerobic baffled. What is the best design criteria for anaerobic baffled. An application of anaerobic baffled reactor to produce biogas from kitchen waste a. As wastewater flows through the filter, particles are trapped and organic matter is degraded by the active biomass that is attached to the surface of the filter material. Therefore, the ability of a hybrid anaerobic baffled reactor, treating desizing wastewater, to achieve a prompt startup was studied at labscale. Slaughterhouse wastewater treatment by combined anaerobic. The performance of a sludge blanket anaerobic baffled reactor was tested as an integrated. What is the best design criteria for anaerobic baffled reactor abr in order to treat wastewater low, medium and high organic loading.
Effect of hrt on the biodegradability of textile wastewater. The purpose of the visit was to observe the anaerobic fixed film reactor affr wastewater treatment system which was developed by biotec and kmutt researchers. The developments of anaerobic baffled reactor for wastewater. Performance of an anaerobic baffled reactor abr during. The use of the anaerobic baffled reactor abr for wastewater.
This design gives two alternatives that will be used, anaerobic baffled reactor abr and anaerobic filter af. Anaerobic sequencing batch reactor asbr anaerobic contact process anaerobic filter af upflow anaerobic slugde blanket uasb fluidized bed reactor hybrid reactor. The system was operated at a hydraulic retention time of 24 hours in the. An anaerobic baffled reactor abr is an improved septic tank with a series of baffles under which the grey, black or the industrial wastewater is forced to flow under and offer the baffles from the inlet to the outlet. The two units are selected because of the cheap construction and operational cost as well as an easy maintenance. In this study an anaerobic baffled reactor was proposed for the recovery of energy and production of organic fertilizer. A typical construction of the tank or reactor usually comprises of different compartments with various outlet levels and it can. In the present study an experimental model of anaerobic baffled was fabricated to conduct reactor. Anaerobic baffled reactor how is anaerobic baffled reactor. This work analyzed the performance of an anaerobic reactor at codso 4 2ratios ranging from 3. The effect of operational conditions such as hrt, influent cod and glucose concentration as the cosubstrate was also investigated.
The dewats treats highstrength wastewater from 80 households 400 pe. In anaerobic filters, the biofilm is retained within the reactor on filters made from materials such as ceramics, glass, engineered plastics, or wood. A sludge blanket is established in each baffled zone, and different microbiological populations. Within this type of reactor, wastewater is forced to flow under and over the baffles from one compartment to the next as it passes from the inlet to the outlet dama et al.
Assistant professor in civil engineering, annamalai university, annamalai nagar, tamil nadu, india. 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. The anaerobic baffled reactor abr avoids the risk of clogging and sludge bed expansion of the other systems, such as the anaerobic filter and uasb manariotis and grigoropoulos 2002. Anaerobic filter reactor performance for the treatment of. The reactor design has been developed since the early 1980s and has several advantages over well established systems such as the upflow anaerobic sludge blanket and the anaerobic filter. The upper 50 to 70 percent of the reactor is filled with crossflow plastic media and behaves as an anaerobic filter. Slaughterhouse wastewater treatment by combined anaerobic baffled reactor and anaerobic filter. The dimension calculation of both abr and af are referring to a design criteria. An anaerobic filter is a fixed bed biological reactor with one or more filtration chambers in series. Sludge blanket anaerobic baffled reactor for source ecomotive. The developments of anaerobic baffled reactor for wastewater treatment. The material can be arranged in various confirmations, made out of different matter plastics. A comparative study of anaerobic fixed film baffled reactor. Anaerobic baffled reactor abr sswm find tools for sustainable.
Anaerobic digestion is the only technology that has proven capable of extracting this energy from wastewaters on a commercial scale 2. Mathematical modelling of cassava wastewater treatment using. Upflow hybrid anaerobic filter reactors or hafs typically operate at foodtomicroorganism fm ratios between 0. A typical construction of the tank or reactor usually comprises of different compartments with various outlet levels and it can also be described as having madeup of series of. In other cases, little, if any effect of sulfate concentration on anaerobic reactor performance was observed choi and rim, 1991. The sludge retention in such a reactor is based on the formation of easily settling sludge aggregates flocs or granules, and on the application of an internal gasliquid solids separation system glss device. Anaerobic reactor design concepts for the treatment of. The design concepts of anaerobic treatment systems had been. Anaerobic baffled reactor how is anaerobic baffled reactor abbreviated. In the bioreactor, low value of ph in the first compartment was due to acid generated by the acidogenic bacteria. Filter media helps increase surface area for active bacteria. Desludging is needed only if excess sludge activated is generated. Anaerobic baffled reactor for treatment of textile dye. Refer to figure 1 and 2 for a schematic of an uasbs and an abr.
As wastewater flows through the filter, particles are trapped and organic matter is degraded by the active. Anaerobic sludge bed reactors asbr the anaerobic sludge bed reactors asbr undoubtedly are by far the most popular anwt systems so far. Effects of media design on anaerobic filter performance. Anaerobic pretreatment of pharmaceutical wastewater using. Feed tank chemical oxygen demand cod was varied from 2000 to 7000mg l1. A model for dewats is developed in nepal with anaerobic baf. Feb, 20 the average effluent cod concentrations of the anaerobic fluidized bed reactor and aerobic moving bed bio reactor were 935 and 350 mgl respectively. 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. Feed tank chemical oxygen demand cod was varied from. The initial phenol concentration was 100 mgl and once satisfactory phenol removal efficiency of 8090% was achieved the phenol concentration stepwise. Introduction in the technical design for anaerobic. Performance of an upflow anaerobic packed bed reactor system. May 20, 2017 the fall 2016 anaerobic fluidized bed reactor afb group is focused on assessing the treatment capabilities of an afb reactor through the removal of chemical oxygen demand cod and the production of biogas.
The anaerobic baffled reactor abr avoids the risk of clogging and sludge bed expansion of the other systems, such as the anaerobic filter and. The anaerobic filter can be integrated with the baffled reactor. Pdf the goal of this research is to examine the potential use of anaerobic baffled reactor abr followed by a gravel bed filter gbf towards. Anaerobic fluidized bed afb reactor aguaclara dashboard. An application of anaerobic baffled reactor to produce. Upflow anaerobic packed bed reactor filled with granular activated carbon, uapbsb.
Treatment of domestic wastewater using an anaerobic baffled. Previous groups have designed afb reactors to handle a flow rate of 0. The significant difficulty in hybrid anaerobic baffled reactor operation is the slow startup procedure, which is crucial to the overall polyvinyl alcoholcontaining desizing wastewater treatment. Alternative design of wastewater treatment plant with.
This indicates that the anaerobic fluidized bed reactor aerobic moving bed bio reactor system had successfully operated at this olr and operation condition. Phenol % anaerobic baffled reactor % acidogenic bacteria % industrial wastewater % biodegradation. The treatment of these effluents has been carried out in a fullscale plant comprising a 12 m 3 anaerobic filter af reactor and a 28 m 3 sequential batch reactor sbr. Dewats rather than a centralized system might be especially bene. Anaerobic baffled react or for treatment of textile dye effluent 307 high color removal by the reactor. The abr is a rectangular perspex box with internal vertical baffles alternately hanging and standing. Performance of an anaerobic baffled reactor abr in. Thus extremely high srt could be maintained irrespective of hrt.
One type of highrate reactor is the anaerobic baffled reactor abr. Orange county sanitation district anaerobic baffled reactor abr pilot plant. The area for sludgedrying beds may require an additional 0. Treatment efficiency of an anaerobic baffled reactor treating. It constitutes of two anaerobic compartments tanks filled with fixed bed. A modified design of anaerobic baffled reactor abr was carried out with using different combination of kitchen waste and activated sewage sludge to achieve the highest biogas and methane generation in the shortest time. Anaerobic baffled reactors abr are widely used in wastewater treatment plant in order to remove heavy sediment solids so that the carryover wastewater will have lower cod level before going to next step of processes. Performance of an upflow anaerobic packed bed reactor. Stuckeym department of chemical engineering and chemical technology, imperial college of science, technology and medicine, prince consort road, london sw7 2by, u. Anaerobic baffled reactor how is anaerobic baffled. Schematic diagram of the expandedbed anaerobic reactor 8 schematic diagram of.
In this study, 3 labscale experimental abr 2 baffles with and without anaerobic filter, respectively, and 3 baffles were studied and compared to a conventional 2 chambers septic tank. The induced bed reactor ibr was developed at utah state university to apply highrate anaerobic digestion techniques to high solids content substrates. A comparative study of anaerobic fixed film baffled reactor and upflow anaerobic fixed film fixed bed reactor for biological removal of diethyl phthalate from wastewater. The biological filter is packed with plastic media. Treatment efficiency of an anaerobic baffled reactor. An anaerobic baffled reactor abr is an improved septic tank s. Anaerobic filter sustainable sanitation and water management. Anaerobic packed bed reactor were first proposed as a treatment process by young and mccarty 3 and is similar to a trickling filter biomass is attached on inert support material in biofilm form. The influent wastewater entered through an internal downcomer tube in the headplate that extended to within 20mm of the reactor base and allowed feed to flow upward through the sludge bed. Pdf the developments of anaerobic baffled reactor for wastewater. Abstractappropriate startup of an anaerobic baffled reactor abr is considered to be the most delicate and important issue in the anaerobic process, and depends on several factors such as wastewater composition, reactor configuration, inoculum and operating conditions. This paper summarizes the performance of the dewats from july.
Mar 01, 2009 the performance of an anaerobic baffled reactor abr was evaluated in the treatment of cassava wastewater, a pollutant residue. It combined the function of anaerobic contactor reactor, anaerobic filter and uasb simultaneously li et al. Upflow anaerobic packed bed reactor filled with granular activated carbon. 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. The reactor is defined as two stages anaerobic fixed bed filter reactor made of coated steel of total gross volume equal 2. The highrate anaerobic treatment system offer several advantages such as less land requirement, odor control, and a high removal of organic loading rate. An abr divided in four equal volume compartments total volume 4l and operated at 35c was used in cassava wastewater treatment.
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