This acceptance stems from its simplicity, economy and the possibility of energy recovery. Pdf upflow anaerobic sludge blanket uasb reactors have been widely used for the treatment of industrial. Upflow anaerobic sludge blanket up flow anaerobic sludge blanket uasb. Upflow anaerobic sludge blanket reactors for treatment of. Upflow anaerobic sludge blanket uasb reactors used for different population ranges. Chapter 4 anaerobic sewage treatment using uasb reactors. Anaerobic treatment of municipal wastewater in uasbreactors. The upflow anaerobic sludge blanket process uasb has been around for many years, so it clearly can work well. Download this upflow anaerobic sludge blanket process ebook and keep it on your hard drive for later reference. 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. Huasb reactor in treating slaughterhouse wastewater under the mesophilic temperature was studied. It has been applied to a wide spectrum of wastewaters on both domestic and industrial scales. Design of upflow anaerobic sludge blanket uasb reactor.
Upflow anaerobic sludge blanket reactor view presentation slides online. Treatment of municipal wastewater in upflow anaerobic. Upflow anaerobic sludge blanket technology also known as uasb reactor is a form of anaerobic digester that used in wastewater treatment. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic. Anaerobic treatment is very common in wastewater treatment plants in developing countries. Pdf anaerobic sludge blanket reactors researchgate. The merits of anaerobic and aerobic bioreactors are. The sludge blanket is comprised of microbial granules 1 to 3 mm in diameter, i. 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. 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. The upflow anaerobic sludge blanket reactor uasb is a single tank process. Use of the upflow sludge blanket usb reactor concept for. At the top, biogas is collected and the effluent of treated water leaves.
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. 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. Pdf integrated application of upflow anaerobic sludge. Design and operation of an upflow anaerobic sludge blanket reactor d. 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. 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.
Treatment of domestic wastewater using upflow anaerobic. 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. The top of the anaerobic reactor was tightly closed to maintain the stringent anaerobic condition. 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. Review of upflow anaerobic sludge blanket reactor technology. This video shows an uasb reactor tipically designed for wastewater treatment plants where it is possible. Startup criteria for a upflow anaerobic sludge blanket.
Wastewater enters the reactor from the bottom, and flows upward. Upflow anaerobic sludge blanket reactor uasb is a type of high rate suspended anaerobic reactor, which has a sludge. Upflow anaerobic sludge blanket uasb treatment of sewage. Upflow anaerobic sludge blanket reactor uasb the upflow anaerobic sludge blanket reactor uasb is a single tank process.
In the anaerobic milieu of the reactor, the methane is formed due to bacterial activity during the. 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. Performance of upflow anaerobic bioelectrochemical. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. Treatment of municipal wastewater in upflow anaerobic sludge blanket uasb reactor dr. 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. Operation performance and granule characterization of upflow anaerobic sludge blanket uasb reactor treating wastewater with starch as the sole carbon source. A modified upflow anaerobic sludge blanket reactor as an. It is normally referred to as uasb reactor, is a form of anaerobic digester that is used for wastewater treatment. Effect of temperature and organic loading rate on upflow. 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. Anaerobic pretreatment of domestic sewage using uasb reactor systems offers a number of advantages, e. Amaral a department of environmental engineering, federal university of bahia, salvador city, bahia state 40210630, brazil. An upflow anaerobic sludge blanket reactor uasb was invented by lettinga at early 1980s, commonly used in various. Application of uasb reactor in industrial wastewater. This paper presents the findings of the study on treatment of domestic wastewater using a laboratory scale hybrid upflow anaerobic sludge blanket huasb reactor. Upflow anaerobic sludge blanket digestion wikipedia. Water and wastewater treatment technologies upflow anaerobic sludge blanket uasb reactor in wastewater treatment k. 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. The hydrodynamic characteristics of upflow anaerobic sludge blanket uasb reactors were investigated in this study. Upflow anaerobic sludge blanket uasb reactor in wwtp. 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. 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. 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.
The efforts have resulted in new type of upflow anaerobic sludge blanket uasb process, which in recent 6 m 3 pilot. 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. Anaerobic sludge blanket reactors global water pathogen. The upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its development in the netherlands. 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. Integrated application of upflow anaerobic sludge blanket reactor for the treatment of wastewaters. Biomethane production from vinasse in upflow anaerobic sludge. Pdf design of upflow anaerobic sludge blanket uasb.
But, unfortunately, this type of ad treatment can only handle quite low contamination levels in effluents, but with the. Design of uasbr upflow anaerobic sludge blanket reactor. Anaerobic treatment of municipal wastewater in upflow anaerobic. Cells were gramnegative, motile, nonsporulating, straight to curved rods with a polar flagellum. Citeseerx document details isaac councill, lee giles, pradeep teregowda.
Performance of upflow anaerobic sludge blanket uasb. Cwt uasb upflow anaerobic sludge blanket reactor by. The highest methane production rate of 510 ml ch 4 l. An enhanced treatment performance of the twophase system and degradation 1930% and saturation 1012% of lcfas in acidogenesis was found. Performance evaluation of upflow anaerobic sludge blanket. A laboratory scale upflow anaerobic sludge blanket uasb reactor study was done with spentwash distillery effluent as substrate. 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. A modified upflow anaerobic sludge blanket reactor as an alternative for decentralized domestic wastewater treatment in developing countries s. The uasb reactor is a methanogenic methaneproducing digester that evolved from the anaerobic clarigester. Pdf design of upflow anaerobic sludge blanket uasb reactor.
Clarifier hybrid upflow anaerobic sludge blanket ec. Upflow anaerobic sludge blanket, or uasb, is a form of anaerobic oxygenfree digester used in wastewater treatment. 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. A similar but variant technology to uasb is the expanded granular sludge bed egsb digester. Effect of different parameters and developments for domestic wastewater treatment. An upflow anaerobic sludge blanket reactor was designed to handle 8,800 liters per. Citeseerx in upflow anaerobic sludge blanket reactor. Upflow anaerobic sludge blankethollow centered packed bed. Upflow anaerobic sludge blanket reactor uasb sswm find. A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it. Anaerobic mesophilic treatment of cattle manure in an. Advantages and disadvantages of uasb reactor technology.
Fast startup of thermophilic upflow anaerobic sludge bed uasb reactors was achieved at process temperatures of 46. Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water. 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. Design and operation of an upflow anaerobic sludge blanket.
Abstract, the upflow anaerobic sludge blanket uasb is essentially based on a special. Hydrodynamics of upflow anaerobic sludge blanket reactors. 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. While the cod removal varied from 7586%, the bod removal was in the range of 7091%. 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. Upflow anaerobic sludge blanket uasb reactors have been widely used for the treatment of industrial wastewater. Anaerobic digestion can be utilized to convert industrial wastewater into clean water and energy. It is a methaneproducing digester which uses an anaerobic process and forming a blanket of granular sludge and is processed by anaerobic microorganism. Uasb reactor with mesophilic granular sludge springerlink. Uasb reactor upflow anaerobic sludge blanket is a type of widely used biogas reactors to treat organic liquid waste with high efficiency of 70. Sanitation systems perspective sswm find tools for.
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