The top of the anaerobic reactor was tightly closed to maintain the stringent anaerobic condition. Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water. The highest methane production rate of 510 ml ch 4 l. Upflow anaerobic sludge blanket uasb reactors, expanded granular sludge bed egsb reactors and anaerobic baffled reactors abrs are considered highrate anaerobic process reactors that are designed to remove organic matter measured as biochemical oxygen demand bod or chemical oxygen. A laboratory scale upflow anaerobic sludge blanket uasb reactor study was done with spentwash distillery effluent as substrate. The startup studies revealed that the recirculation of biogas, produced during the initial stages, under low organic loading rates helps in mixing as well as partial supplementation of carbon dioxide for excess hydrogen in the reactor. Effect of temperature and organic loading rate on upflow. Pdf design of upflow anaerobic sludge blanket uasb reactor. Citeseerx in upflow anaerobic sludge blanket reactor. Upflow anaerobic sludge blanket digestion wikipedia. The upflow anaerobic sludge blanket reactor uasb is a single tank process. It is normally referred to as uasb reactor, is a form of anaerobic digester that is used for wastewater treatment. The uasb reactor is a methanogenic methaneproducing digester that evolved from the anaerobic clarigester.
Upflow anaerobic sludge blanket uasb treatment of sewage. Operation performance and granule characterization of. An upflow anaerobic sludge blanket uasb reactor is basically a tank that has a sludge bed in which organic material dissolved in the wastewater is degraded, and as a consequence of this digestion, biogas is produced. Treatment of municipal wastewater in upflow anaerobic. A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it. A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it the sludge blanket is comprised of microbial granules 1 to 3 mm in diameter, i. Two of several strictly aerobic, mesophilic bacteria isolated from a labscale upflow anaerobic sludge blanket uasb reactor treating a petrochemical wastewater, strains amx 17 and amx 19t, were subjected to detailed taxonomic study. Application of uasb reactor in industrial wastewater. An upflow anaerobic sludge blanket reactor uasb was invented by lettinga at early 1980s, commonly used in various. Clarifier hybrid upflow anaerobic sludge blanket ec. Huasb reactor in treating slaughterhouse wastewater under the mesophilic temperature was studied.
Upflow anaerobic sludge blanket up flow anaerobic sludge blanket uasb. Download this upflow anaerobic sludge blanket process ebook and keep it on your hard drive for later reference. The sludge blanket is comprised of microbial granules 1 to 3 mm in diameter, i. Pdf upflow anaerobic sludge blanket uasb reactors have been widely used for the treatment of industrial. Citeseerx document details isaac councill, lee giles, pradeep teregowda. A similar but variant technology to uasb is the expanded granular sludge bed egsb digester. The upflow anaerobic sludge blanket reactor was operated at various hydraulic retention times and was fed with palm oil mill effluent as a carbon source. Treatment of municipal wastewater in upflow anaerobic sludge blanket uasb reactor dr. The upflow anaerobic sludge blanket uasb reactor is an attractive alternative for regions in hot climates since it works better under mesophilic conditions and it does not need any supporting structure for the development of microorganisms, which grow in the form of granules.
It has been applied to a wide spectrum of wastewaters on both domestic and industrial scales. Upflow anaerobic sludge blanket uasb reactor in wwtp. Design of upflow anaerobic sludge blanket uasb reactor. Kandasamy encyclopedia of life support systemseolss can be traced to the processing of industrial chemicals and nearly 40% of the total organic pollution to the food processing industry alone. Performance evaluation of upflow anaerobic sludge blanket. An upflow anaerobic sludge blanket reactor was designed to handle 8,800 liters per day of the influent and field tested for energy production from biomethanation of papaya fruit processing jam industry wastes. Anaerobic digestion can be utilized to convert industrial wastewater into clean water and energy. Integrated application of upflow anaerobic sludge blanket reactor for the treatment of wastewaters. Up flow anaerobic sludge blanket process uasb,was developed by lettinga and his coworkers in holland in the early 1970s anaerobic granular sludge bed technology refers to a special kind of reactor concept for the high rate anaerobic treatment of wastewater.
Upflow anaerobic sludge blanket technology also known as uasb reactor is a form of anaerobic digester that used in wastewater treatment. Upflow anaerobic sludge blankethollow centered packed bed uasbhcpb reactor was developed with the aim to minimize operational problems in the anaerobic treatment of palm oil mill effluent pome under thermophilic conditions. In the anaerobic milieu of the reactor, the methane is formed due to bacterial activity during the. The upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its development in the netherlands. The sludge is carried by the upflow movement of the gas bubbles, and the installation of a threephase separator gases, solids and liquids in the upper part of the reactor is necessary, to allow sludge retention and return. It is a methaneproducing digester which uses an anaerobic process and forming a blanket of granular sludge and is processed by anaerobic microorganism. Chapter 4 anaerobic sewage treatment using uasb reactors. This paper presents the findings of the study on treatment of domestic wastewater using a laboratory scale hybrid upflow anaerobic sludge blanket huasb reactor. Fast startup of thermophilic upflow anaerobic sludge bed uasb reactors was achieved at process temperatures of 46. Pdf design of upflow anaerobic sludge blanket uasb.
Pdf integrated application of upflow anaerobic sludge. While the cod removal varied from 7586%, the bod removal was in the range of 7091%. The upflow anaerobic sludge blanket process uasb has been around for many years, so it clearly can work well. Abstract, the upflow anaerobic sludge blanket uasb is essentially based on a special. Upflow anaerobic filter af uasb reactor anaerobic hybrid ah reactor anaerobic fluidised bed afb reactor. An enhanced treatment performance of the twophase system and degradation 1930% and saturation 1012% of lcfas in acidogenesis was found.
This acceptance stems from its simplicity, economy and the possibility of energy recovery. The contents presented in this paper focuses on the performance of uasb upflow anaerobic sludge blanket reactor for treating various industrial and domestic wastewaters at various operating conditions. The efforts have resulted in new type of upflow anaerobic sludge blanket uasb process, which in recent 6 m 3 pilot. Upflow anaerobic sludge blanket reactor uasb the upflow anaerobic sludge blanket reactor uasb is a single tank process. Effect of different parameters and developments for domestic wastewater treatment. Upflow anaerobic sludge blanket reactor uasb is a type of high rate suspended anaerobic reactor, which has a sludge. The hydrodynamic characteristics of upflow anaerobic sludge blanket uasb reactors were investigated in this study. The performance of upflow anaerobic bioelectrochemical reactor uabe, equipped with electrodes anode and cathode inside the upflow anaerobic reactor, was compared to that of upflow anaerobic sludge blanket uasb reactor for.
Use of the upflow sludge blanket usb reactor concept for. Review of upflow anaerobic sludge blanket reactor technology. The goal of this project was to set up labscale anaerobic digesters to collect data that will be used to develop and validate a predictive monitoring and controls solution to. Design and operation of an upflow anaerobic sludge blanket reactor d. Hydrodynamics of upflow anaerobic sludge blanket reactors. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. The chemical oxygen demand cod, total organic carbon toc, biogas and methane production were measured at hydraulic retention time hrt of 10 to 4d, and. Upflow anaerobic sludge blanket uasb reactor is a widely used anaerobic treatment of wastewater that has numerous benefits over its alternatives, including aerobic wastewater treatments lettinga et al. Upflow anaerobic sludge blanket reactors for treatment of. Water and wastewater treatment technologies upflow anaerobic sludge blanket uasb reactor in wastewater treatment k. Upflow anaerobic sludge blanket uasb reactors used for different population ranges.
Amaral a department of environmental engineering, federal university of bahia, salvador city, bahia state 40210630, brazil. An upflow anaerobic sludge blanket reactor was designed to handle 8,800 liters per. Wastewater enters the reactor from the bottom, and flows upward. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic. Uasb reactor upflow anaerobic sludge blanket is a type of widely used biogas reactors to treat organic liquid waste with high efficiency of 70. Upflow anaerobic sludge blankethollow centered packed bed. Anaerobic pretreatment of domestic sewage using uasb reactor systems offers a number of advantages, e. Upflow anaerobic sludge blanket, or uasb, is a form of anaerobic oxygenfree digester used in wastewater treatment.
Anaerobic treatment of municipal wastewater in upflow anaerobic. Cwt uasb upflow anaerobic sludge blanket reactor by. At the top, biogas is collected and the effluent of treated water leaves. Advantages and disadvantages of uasb reactor technology. Upflow anaerobic sludge blanket reactor uasb sswm find. Biomethane production from vinasse in upflow anaerobic sludge. Pdf anaerobic sludge blanket reactors researchgate. Anaerobic treatment is very common in wastewater treatment plants in developing countries. Uasb reactor is a methaneproducing digester, which uses an anaerobic process and forming a blanket of granular sludge and is processed by the anaerobic microorganisms. A modified upflow anaerobic sludge blanket reactor as an.
Upflow anaerobic sludge blanket reactor view presentation slides online. Anaerobic mesophilic treatment of cattle manure in an. Anaerobic sludge blanket reactors global water pathogen. Operation performance and granule characterization of upflow anaerobic sludge blanket uasb reactor treating wastewater with starch as the sole carbon source. Hproducing and hconsuming organisms are located in continuous reactor operation also demonstrated that the granules in the uasb reactor were helpful in treating toxic wastewater, such as landfill leachate. A modified upflow anaerobic sludge blanket reactor as an alternative for decentralized domestic wastewater treatment in developing countries s. Cells were gramnegative, motile, nonsporulating, straight to curved rods with a polar flagellum. Design of uasbr upflow anaerobic sludge blanket reactor. Performance of upflow anaerobic sludge blanket uasb. Anaerobic treatment of liquidized food waste lfw was carried out in an upflow anaerobic sludge blanket reactor uasbr by stepwise increase in organic loading rate olr and temperature. This video shows an uasb reactor tipically designed for wastewater treatment plants where it is possible. Sanitation systems perspective sswm find tools for.
Upflow anaerobic sludge blanket uasb technology, normally referred to as uasb reactor, is a form of anaerobic digester that is used for wastewater treatment the uasb reactor is a methanogenic methaneproducing digester that evolved from the anaerobic clarigester. Cwt uasb upflow anaerobic sludge blanket reactor by clean water technology, inc the concept of the uasb reactor consists of a vessel in which the wastewater flows upward through an anaerobic sludge bed comprised of selfimmobilized microbial co. Eblen wastewater streams with high concentrations of soluble organics and low solids concentrations have historically been treated in aerobic reactors such as activated sludge or trickling filters. The merits of anaerobic and aerobic bioreactors are. Upflow anaerobic sludge blanket uasb reactors have been widely used for the treatment of industrial wastewater. Anaerobic treatment of municipal wastewater in uasbreactors. Startup criteria for a upflow anaerobic sludge blanket. Uasb reactor with mesophilic granular sludge springerlink. Treatment of domestic wastewater using upflow anaerobic. But, unfortunately, this type of ad treatment can only handle quite low contamination levels in effluents, but with the. Design and operation of an upflow anaerobic sludge blanket. Performance of upflow anaerobic bioelectrochemical.
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