The betim central sewage treatment plant, brazil, was designed to. Pdf upflow anaerobic sludge blanket uasb reactors have been widely used for the treatment of industrial wastewater. But, unfortunately, this type of ad treatment can only handle quite low contamination levels in effluents. Department of civil engineering, faculty of engineering, university putra malaysia, 43400. Anaerobic sludge blanket reactors global water pathogen project. Upflow anaerobic sludge blanket reactor view presentation slides online. Wastewater enters the reactor from the bottom, and flows upward. Hydrodynamics of upflow anaerobic sludge blanket reactors. Jun 19, 2017 this study investigated the applicability of dynamic membrane filter dmf technology in an upflow anaerobic sludge blanket uasb and dmfcoupled process for the treatment of municipal wastewater.
Anaerobic digestion can be utilized to convert industrial wastewater into clean water and energy. The anaerobic reactor is a upflow anaerobic sludge blanket reactor uasb. 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 3. Pdf proposed design of upflow anaerobic sludge blanket. 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. The upflow anaerobic sludge blanket uasb process has emerged as a promising highrate anaerobic digestion technology for the. Sizing of uasb upflow anaerobic pond for wastewater. A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it. The high rate reactors, the upflow anaerobic sludge blanket reactor has. Startup criteria for a upflow anaerobic sludge blanket. Assessment of potential biogas production from rice straw leachate in upflow anaerobic sludge blanket reactor uasb nurul shafiqah rosli, s.
Operation of an upflow anaerobic sludge blanket reactor uasb paper presented by. The upflow anaerobic sludge blanket reactor uasb is a single tank process. Application of uasb reactor in industrial wastewater. Treatment of domestic wastewater using upflow anaerobic sludge blanket reactor 1j. Microbial and physicochemical characteristics of compact. It is a maintenancefree, corrosionfree and rugged process with a straightforward design. 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.
As the knowledge in the anaerobic treatment field has progressed, some settings such as uasb reactors upflow anaerobic sludge blanket have been wining acceptance in the last few decades in tropical and subtropical countries, unlike the 1980s. The merits of anaerobic and aerobic bioreactors are. Upflow anaerobic sludge blanket uasb treatment of sewage. The wastewater flows upward through a sludge blanket composed of. A laboratory scale upflow anaerobic sludge blanket uasb reactor study was done with spentwash distillery effluent as substrate. Therefore, we studied the settling ability and community composition of the anaerobic ammoniumoxidizing. 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. The objective of this study was to evaluate the behaviour of a system comprising an upflow anaerobic sludge blanket reactor followed by activated sludge to treat domestic sewage. Two parameters of influent concentration and the upflow velocity were changed for the evaluation. Upflow clarification using the upflow anaerobic sludge blanket uasb, fig. Upflow anaerobic sludge blanket reactor uasb sswm find. The wastewater enters the reactor through a well designed distribution system and is distributed equally over the bottom of the reactor. They are considered sludge blanket reactors because the influent wastewater receives treatment by passing.
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 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 uasb reactor is a methanogenic methaneproducing digester that evolved from the anaerobic clarigester. Download this upflow anaerobic sludge blanket process ebook and keep it on your hard drive for later reference. Yeom 1civil and environmental engineering centre for zero emission technology sung kyun kwan university, korea 2centre for environmental studies ces anna university, chennai 600025 tamilnadu, india int. This reactor type is very well suited for wastewater. The advantages of this system include the ability to keep large amount of the biomass intended for degradation and the production of biogas.
Apr 15, 2018 upflow anaerobic sludge blanket reactor 1. The system is selfmixed by the upflow movement of biogas bubbles and by the liquid flow through the. This type of reactor may, in many cases, be the optimal solution for wastewater treatment in developing countries due to its simplicity and low cost. Upflow anaerobic sludge blanket reactors for treatment of wastewater from the brewery industry.
Anaerobic sludge blanket reactors global water pathogen. Upflow ananerobic sludge blanket uasb the uasbis a wastewater treatment system that uses microorganisms to biologically degrade pollutants. Treatment of municipal wastewater in upflow anaerobic sludge. Anaerobic degradation of phenol mixed with a readily degradable synthetic wastewater dsww as a cosubstrate was studied in a 12 l upflow anaerobic sludge blanket reactor at 302c over a period. Treatment of domestic wastewater using upflow anaerobic sludge. 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. Startup criteria for a upflow anaerobic sludge blanket uasb. Upflow anaerobic sludge blanket reactors for treatment of.
Factors affecting bod5 and tss removal from wastewater using. It is a methaneproducing digester which uses an anaerobic process and forming a blanket of granular sludge and is processed by anaerobic microorganism. Biotim uasb upflow anaerobic sludge blanket technology 40 years of pioneering. They can also recover methane, which can be managed to produce energy. The sludge is well digested and dried and is currently provided to the public in bags as.
Anaerobic ammonium oxidation anammox is a promising new process to treat highstrength nitrogenous wastewater. The usab design is tailor made to suit the wastewater characteristics given in table 2. Treatability studies of dairy wastewater by upflow. 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 study involves the treatment of dairy industry wastewater by uasb reactor by varying the retention times in days for a. The concentration of sludge in this area usually ranges between 1 and 3%. Performance of upflow anaerobic sludge blanket uasb reactor and other anaerobic reactor configurations for wastewater treatment. 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. An area of more dispersed bacterial growth, name sludge blanket, is developed above the sludge bed, with solids presenting lower concentration and settling velocities. Upflow anaerobic sludge blanket technology also known as uasb reactor is a form of anaerobic digester that used in wastewater treatment. Modelling of an upflow anaerobic sludge blanket reactor r.
Treatment of domestic wastewater using upflow anaerobic. Upflow anaerobic sludge blanket reactors are designed. The uasb upflow anaerobic sludge blanket process and egsb with high liquid andor gas upflow velocities require biomass with excellent settling characteristics. Increase in nutrient levels during the anaerobic treatment of wastewater is a common occurrence and is attributed to the mineralization of organic compounds hanndel and lettinga, 1994. Treatability studies of dairy wastewater by upflow anaerobic sludge blanket reactor r. Tony davies, operations manager campaspe wr scheme, earth tech engineering 68th annual water industry engineers and operators conference schweppes centre bendigo 7 and 8 september, 2005. One of these reactors is the upflow anaerobic sludge blanket uasb reactor. The high rate reactors, the upflow anaerobic sludge blanket reactor has been successfully. The upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its development in the netherlands. Performance of upflow anaerobic sludge blanket uasb. The advantages of this system include the ability to keep large amount of the biomass intended. Jakov buljan agroindustries and sectoral support branch.
Pdf this paper presents the findings of the study on treatment of domestic wastewater using a laboratory scale hybrid upflow anaerobic sludge blanket. The upflow anaerobic sludge blanket process uasb has been around for many years, so it clearly can work well. Applicability of upflow anaerobic sludge blanket and dynamic. Chapter 4 anaerobic sewage treatment using uasb reactors edx. Uasb reactor is a methaneproducing digester, which uses an anaerobicprocess 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. The main purpose of the project in designing the upflow anaerobic sludge blanket uasb is to control and monitor the wastewater concentration in mit by minimizing the high concentrations of pollutant such as biological oxygen demand bod and other. Kandasamy encyclopedia of life support systemseolss can be traced to the processing of industrial chemicals and nearly 40% of the total. The purpose of this study is to investigate the efficiency of the uasb reactors upflow anaerobic sludge blanket at the laboratory scale in processing the mixture of domestic wastewater greywater and black water.
Water and wastewater treatment technologies upflow anaerobic sludge blanket uasb reactor in wastewater treatment k. Upflow anaerobic sludge blanket, or uasb, is a form of anaerobic oxygenfree digester used in wastewater treatment. Upflow anaerobic sludge blanket uasb reactors and anaerobic baffled reactors abrs are sanitation technologies that are designed to remove organic matter measured as bod or cod. Upflow anaerobic sludge blanket uasb reactor in wastewater. But, unfortunately, this type of ad treatment can only handle quite low contamination levels in effluents, but with the. In the uasb process, the waste to be treated is introduced in the bottom of the reactor. Jan 17, 20 what is upflow anaerobic sludge blanket.
Chapter 4 anaerobic sewage treatment using uasb reactors. Modelling of an upflow anaerobic sludge blanket reactor. Pdf treatment of domestic wastewater using upflow anaerobic. Performance of upflow anaerobic sludge blanket uasb reactor. Installation of the upflow anaerobic sludge bed uasb and expanded granular sludge bed egsb for industrial wastewater has grown very rapid by over the past 1520 years. Since the mid 1990s, approximately 10 years after the installation of the first pilot scale upflow anaerobic sludge bed uasb reactors for the treatment of municipal. Design of uasbr upflow anaerobic sludge blanket reactor. Anaerobic degradation of phenol mixed with a readily degradable synthetic wastewater dsww as a cosubstrate was studied in a 12 l upflow anaerobic. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic. May 02, 2016 download this upflow anaerobic sludge blanket process ebook and keep it on your hard drive for later reference. Uasb is a hybrid type of reactor, involving both suspended and attached growth process. Treatability studies of dairy wastewater by upflow anaerobic. The lucas anaerobic technology is typically applied as a first. This process relies on the formation of a dense granular sludge bed that is readily.
The hydrodynamic characteristics of upflow anaerobic sludge blanket uasb reactors were investigated in this study. 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. 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. Sep 20, 2016 treatment of sewage based on uasb process. Up flow anaerobic sludge blanket technology also known as uasb reactor is a form of anaerobic digester which used in wastewater treatment. The upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. Pdf design of upflow anaerobic sludge blanket uasb reactor. Due to the low growth rate of anaerobic ammoniumoxidizing bacteria, efficient biomass retention is essential for reactor operation. Upflow anaerobic sludge blanket reactor anaerobic digestion. Performance evaluation of a large sewage treatment plant. The upflow velocity should not exceed an upper limit in order to prevent sludge washout, both out of the sludge blanket and out of the reactor. 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. This study investigated the applicability of dynamic membrane filter dmf technology in an upflow anaerobic sludge blanket uasb and dmfcoupled process for the treatment of municipal wastewater.
It has been applied to a wide spectrum of wastewaters on both domestic and industrial scales. Design of an anaerobic digester for wastewater treatment. Upflow anaerobic sludge blanket digestion wikipedia. Unesco eolss sample chapters water and wastewater treatment technologies upflow anaerobic sludge blanket uasb reactor in wastewater treatment k. The biothane uasb upflow anaerobic sludge blanket technology is a proven and reliable process, exclusively owned by biothane. Applicability of upflow anaerobic sludge blanket and. 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. Assessment of potential biogas production from rice straw. Factors affecting bod5 and tss removal from wastewater. Anaerobic treatment of municipal wastewater in uasbreactors.
Lucas anaerobic is the brand name for an anaerobic waste water treatment system which uses upflow anaerobic sludge blanket, upflow anaerobic contact, anaerobic filtration and hybrid anaerobic filtration technologies for treating waste water depending on specific requirement. There are several anaerobic processes for the treatment of wastewater. Central leather research institute, adyar, chennai. The hrt influences the cod reduction and is an important parameter with respect to the desired degradation rate.
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