This ebook is a compilation of information from a well known wiki website, and this it can be given away by those that download this pdf to their hard drives. A laboratory scale upflow anaerobic sludge blanket uasb reactor study was done with spentwash distillery effluent as substrate. It is also claimed to be ideal for use in water reclamation, industrial wastewater treatment and existing plants retrofits 5, 6. 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 improve digester performance. Codigestion of olive mill wastewater and swine manure. The biothane uasb upflow anaerobic sludge blanket technology is a proven and reliable process, exclusively owned by biothane. Upflow anaerobic sludge blanket digestion wikipedia. Anaerobic sludge blanket reactors global water pathogen. 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. The merits of anaerobic and aerobic bioreactors are. When this byproduct is captured, it can be used as an energy source to generate electricity for the plant or to put back in the grid, providing customers with equipment that does. The raw wastewater originating from the industrial process requires pretreatment to prepare it for the anaerobic treatment process.
Apr 10, 2014 upflow anaerobic sludge blanket uasb technology, normally referred to as uasb reactor, is a form of anaerobic digester that is used in the treatment of wastewater. Upflow anaerobic sludge blanket uasb reactor in wastewater. Upflow anaerobic sludge blanket reactor anaerobic digestion. Up flow anaerobic sludge blanket uasb reactor belongs to highrate systems, able to perform anaerobic reaction at reduced hydraulic retention time, if compared to traditional digesters. Moreno 2010, modelling of a upflow anaerobic sludge blanket reactor, in proceedings of the tenth international conference on modelling, monitoring and management of water pollution, bucharest, june 911 2010, brebbia c. This file contains additional information such as exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. Upflow anaerobic sludge blanket uasb reactor the problem associated with anaerobic filters and fbrs has led to development of unpacked reactors that still incorporate an immobilized form of particulate biomass. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic treatment. The upflow anaerobic sludge bed reactor uasb was devel oped in the netherlands in the early seventies lettinga et al. Amaral a department of environmental engineering, federal university of bahia, salvador city, bahia state 40210630, brazil. The anaflo reactor produces biogas with a high concentration of methane. This reactor type is very well suited for wastewater.
Upflow anaerobic sludge blanket reactor listed as uasbr. The cn ratio was 19, and the alkalinity requirements of the two reactors were satisfied by adding caoh 2 and na 2. Methanogenesis in an upflow anaerobic sludge blanket reactor. Upflow sludge blanket filtration usbf which is a new modification of activated sludge is considered as an outstanding technology for municipal wastewater treatment. A modified upflow anaerobic sludge blanket reactor as an alternative for decentralized domestic wastewater treatment in developing countries s. 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. Sludge blanket small scale uasb large scale uasb reactor. Performance of upflow anaerobic bioelectrochemical reactor. Wastewater enters the anoxic compartment of the bioreactor where it mixes with activated sludge recycled from the bottom of the sludge filter. Granular sludge formation in upflow anaerobic sludge blanket uasb reactors. Most of these full scale reactors are used for trea ting agroindustrial wastewat er, but its application for. Wastewater enters the reactor from the bottom, and flows upward. A similar but variant technology to uasb is the expanded granular sludge.
The process is essentially based on a special flow regime allowing the sewage to get into contact with a sludge blanket or sludge bed situated in the reactor, and a following 3phaseseparation of water, sludge and gas methane. 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 demand cod and recover. Upflow anaerobic sludge blankethollow centered packed bed. The ability of two uasb reactors, seeded with cow dung uasbcd and activated sludge of a dairy treatment plant uasbasdit to restart after a. While the cod removal varied from 7586%, the bod removal was in the range of 7091%. Upflow anaerobic filter af uasb reactor anaerobic hybrid ah reactor anaerobic fluidised bed afb reactor. Jakov buljan agroindustries and sectoral support branch. Modelling of an upflow anaerobic sludge blanket reactor. 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. Performance of upflow anaerobic sludge blanket uasb reactor. Anaerobic treatment is very common in wastewater treatment plants in developing countries.
Pdf treatment of domestic wastewater using upflow anaerobic. This video shows an uasb reactor tipically designed. Review of upflow anaerobic sludge blanket reactor technology. The anaerobic digestion of sludge using the upflow anaerobic sludge blanket uasb process has been used for water treatment for many years. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. 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 the treatment of acidic distillery wastewater. The top of the anaerobic reactor was tightly closed to maintain the stringent anaerobic condition.
The over all experimental setups were given in fig 1. Up flow anaerobic sludge blanket technology also known as uasb reactor is a form of anaerobic digester which used in wastewater treatment. Up flow anaerobic sludge blanket reactor uasb about anaerobic wastewater. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Upflow anaerobic sludge blanket reactor an overview. This acceptance stems from its simplicity, economy and the possibility of energy recovery. Anaerobic digestion of deproteinated cheese whey in an. Unesco eolss sample chapters water and wastewater treatment technologies upflow anaerobic sludge blanket uasb reactor in wastewater treatment k. 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. Anaerobic digestion can be utilized to convert industrial wastewater into clean water and energy. The hydrodynamic characteristics of upflow anaerobic sludge blanket uasb reactors were investigated in this study.
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. Operation of an upflow anaerobic sludge blanket reactor uasb tony davies, operation manager, campaspe water reclamation scheme, earthtech engineering. Upflow anaerobic sludge blanket reactor uasb is a type of high rate suspended anaerobic reactor, which has a sludge bed, a sludge blanket, a settling area. It is a maintenancefree, corrosionfree and rugged process with a straightforward design. Upflow anaerobic sludge blanket reactor view presentation slides online. The anaerobic reactor is a upflow anaerobic sludge blanket reactor uasb. This paper will outline why the uasb was chosen for the echuca reclamation scheme. The increased utilization of anaerobic wastewater treatment systems has been associated with the development of highrate reactors such as the anaerobic filter af, the downflow stationary fixedfilm dsff reactor, the upflow anaerobic sludge blanket uasb reactor, the fluidizedbed fb reactor, and the expandedbed eb reactor, which are widely used in municipal and industrial wastewater. Central leather research institute, adyar, chennai.
Codigestion of olive mill wastewater and swine manure using. Overview of the anaflo reactor, configured as an upflow anaerobic sludge blanket system. Pdf the upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its. Anaerobic sludge blanket reactors global water pathogen project. Upflow sludge blanket filtration usbf water online.
The anaerobic contact reactor upflow anaerobic sludge blanket uasb reactor, anaerobic filter, and fluidized bed reactor are mostly employed for effluent of the pulp and paper mills. Biotim uasb upflow anaerobic sludge blanket technology 40 years of pioneering. Startup criteria for a upflow anaerobic sludge blanket. The up flow anaerobic sludge blanket uasb system is one of the reactor types with high loading capacity and it differs from other reactors by the simplicity of its design 45. In upflow anaerobic sludge blanket reactors, sludge retention time is increased by a natural immobilization mechanism viz. Anaerobic treatment of municipal wastewater in uasbreactors. Upflow anaerobic sludge blanket uasb technology, normally referred to as uasb reactor, is a form of anaerobic digester that is used in the treatment of wastewater.
A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it. The upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its. Arvin e, ahring b 1998 improved dechlorinating performance of upflow anaerobic sludge blanket reactors by. Kinetics of dairy waste water treatment using anaerobic sludge blanket reactor system. Apr 15, 2018 upflow anaerobic sludge blanket reactor 1. Treatment of municipal wastewater in upflow anaerobic. The wastewater enters the reactor through a well designed distribution system and is distributed equally over the bottom of the reactor.
An upflow anaerobic sludge blanket uasb reactor is a high rate treatment system, especially feasible for treating soluble containing low solids wastewaters. Anaerobic digesters and up flow anaerobic sludge blanket. A modified upflow anaerobic sludge blanket reactor as an. The performance of uasbhcpb reactor on pome treatment was investigated at 55 c. Water and wastewater treatment technologies upflow anaerobic sludge blanket uasb reactor in wastewater treatment k. 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. Application of the anaerobic treatment in ecological sanitation sewage black water grey urine faeces water storage pretreatment ss removal storage 35 oc uasb septic tank biogas sludge anaerobic digester 35oc biogas 35oc storage anaerobic digester biogas uasb reactor biogas duckweed pond wetland uasb reactor biogas wetland. Treatment of domestic wastewater using upflow anaerobic sludge blanket reactor. Treatment of municipal wastewater in upflow anaerobic sludge. A similar but variant technology to uasb is the expanded granular sludge bed egsb digester. The sludge blanket is comprised of microbial granules 1 to 3 mm in diameter, i.
Assessment of potential biogas production from rice straw. One of the main constraints of the uasb technology is related. Methanogenesis in an upflow anaerobic sludge blanket. Upflow anaerobic sludge blanket how is upflow anaerobic. This favours the formation of granules and well settling flocs. Simultaneous nitrogen and dissolved methane removal from.
Upflow sludge blanket filtration usbf operation of a usbf plant is simple and selfregulating. Upflow anaerobic sludge blanket reactor uasb sustainable. Other types of anaerobic digesters, such as attached media filters and sludge blankets, may serve to provide technical and economic benefit in future. Treatment of municipal wastewater in upflow anaerobic sludge blanket uasb reactor dr. This work evaluates the theoretical availability of energy and the sludge production in a wastewater treatment plant wwtp that associates uasb reactors and su. Upflow anaerobic sludge blanket reactors for treatment of. Department of civil engineering, faculty of engineering, university putra malaysia, 43400 serdang, selangor, malaysia. Pdf treatment of distillery wastewater in an upflow. The upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its development in the netherlands. This file is licensed under the creative commons attribution 3.
Two l9 1 upflow anaerobic sludge blanket usab reactors, operated at 35 c, were used for the digestion of deproteinated cheese whey substrate. The upflow anaerobic sludge blanket reactor uasb is a single tank process. Combining upflow anaerobic sludge blanket uasb reactors. It has been applied to a wide spectrum of wastewaters on both domestic and industrial scales. Treatment of domestic wastewater using upflow anaerobic. Upflow anaerobic sludge blanket reactor how is upflow. 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 demand cod and recover methane. Upflow anaerobic sludge blanket uasb reactor in wwtp. One of the main constraints of the uasb technology is related to its insufficient removal of organic matter and nitrogen. 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. Upflow anaerobic sludge blanket uasb technology, normally referred to as uasb reactor, is a form of anaerobic digester that is used for wastewater treatment. Assessment of potential biogas production from rice straw leachate in upflow anaerobic sludge blanket reactor uasb nurul shafiqah rosli, s. Treatment of dairy wastewater using an upflow anaerobic sludge. The cn ratio was 19, and the alkalinity requirements of the two reactors were satisfied by adding caoh 2 and na 2 co 3 in two different ratios respectively.
May 02, 2016 this ebook is a compilation of information from a well known wiki website, and this it can be given away by those that download this pdf to their hard drives. Upflow anaerobic sludge blanket reactor uasb diagram. Granular sludge formed in upflow anaerobic sludge blanket reactors play an important role in the field of anaerobic treatment due to their engineering advantages over conventional flocculent forms. Performance of upflow anaerobic sludge blanket uasb. When this sludge is cultivated on acidcontaining wastewater, the granules mainly consist of an acetoclastic methanogen resembling methanothrix soehngenii. Indeed, there are hundreds of upflow anaerobic sludge blanket uasb reactors operating in different parts of semitropical regions due to low or even zero energy demand chernicharo et al. Simultaneous nitrogen and dissolved methane removal from an. Treatment of distillery wastewater in an upflow anaerobic sludge blanket uasb reactor article pdf available in desalination and water treatment 5710. Anaerobic treatment of municipal wastewater in upflow anaerobic. Applicability of upflow anaerobic sludge blanket uasb reactor for. Nowadays, the technology is being increasingly used for the benefits of the methane it produces. Uasb reactor is a methaneproducing digester, which uses an anaerobicprocess and forming a blanket of granular sludge and is processed by the anaerobic microorganisms.
Upflow anaerobic sludge blanket uasb technology for. Only 7080% in cod reduction rates and 65 75% in methane production rates has been reported for uasb systems treating omw and sw mixes 44,46. This paper discusses the operation and principles of a uasb in a domestic wastewater treatment plant. Anaerobic digestion of deproteinated cheese whey in an upflow. You may do so in any reasonable manner, but not in any way. In water treatment many plants have been built and operated purely for water treatment purposes. Design considerations critical elements for the design of uasb reactors are the influent distribution system, the gassolids separator, and the effluent with drawal.