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