Kandasamy encyclopedia of life support systemseolss can be traced to the processing of industrial chemicals and nearly 40% of the total. Implementation of upflow anaerobic sludge blanket digester. The anaerobicupflow sludge blanket filtration technique was developed by adding an anaerobic reactor to. Performance of upflow anaerobic sludge blanket uasb reactor and other anaerobic reactor configurations for wastewater treatment. Treatment of municipal wastewater in upflow anaerobic sludge blanket uasb reactor dr. 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. Lit 9977 pdf, 532kb, 2 pages this file may not be suitable for users of assistive technology. However, for optimal performance, the biomass must be in a granular form.
The anaerobic digestion of sludge using the upflow anaerobic sludge blanket uasb process has been used for water treatment for many years. Operation performance and granule characterization of upflow anaerobic sludge blanket uasb reactor treating wastewater with starch as the sole carbon source. The highest methane production rate of 510 ml ch 4 l. 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. This reactor type is very well suited for wastewater. The hydrodynamic characteristics of upflow anaerobic sludge blanket uasb reactors were investigated in this study. The upflow anaerobic sludge blanket uasb process is the most successful new anaerobic reactor design for various industrial and municipal wastewaters mccarty, 2001. 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 upflow anaerobic sludge blanket uasb reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods.
The upflow anaerobic sludge bed reactor uasb was developed in the netherlands in the early seventies lettinga et al. Systems 1, 69 the upflow anaerobic sludge blanket reactor uasb is a single tank process. Treatment of municipal wastewater in upflow anaerobic. Performance evaluation of upflow anaerobic sludge blanket. The sludge blanket is comprised of microbial granules 1 to 3 mm in diameter, i. The system consists of a stirred equalization tank, a buffer inlet tank, and two identical reactors, each with a working volume of 16. Fish processing effluent, uasbr, granulation, cod reduction. The advantages of this system include the ability to keep large amount of the biomass intended for degradation and the production of biogas. Design of upelow anaerobic sludge blanket reactor for treatment of organic wastewaters article in indian journal of environmental health 452. Design of upelow anaerobic sludge blanket reactor for. A hybrid reactor that capitalizes on the positive features of anaerobic filteraf and upflow anaerobic sludge blanket uasb. A similar but variant technology to uasb is the expanded granular sludge bed egsb digester. The anaerobicupflow sludge blanket filtration technique was developed by adding an anaerobic reactor to its influent and operated by varying the main process parameters in.
Hydrodynamics of upflow anaerobic sludge blanket reactors. Department of water pollution control, agricultural university, wageningen, 6703 bc wageningen, the netherlands. 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. The upflow anaerobic sludge blanket process uasb has been around for many years, so it clearly can work well.
Nowadays, the technology is being increasingly used for the benefits of the methane it produces. 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. Uasb reactor is a methaneproducing digester, which uses an anaerobicprocess and forming a blanket of granular sludge and is processed by the anaerobic microorganisms. Performance 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. In water treatment many plants have been built and operated purely for water treatment purposes. Flow range is 175gpm to 5,000gpm for a single unit. Sludge blanket small scale uasb large scale uasb reactor. Sludge blanket anaerobic baffled reactor for source. This process allows a sludge blanket to form and act as a filter and catalyst providing intimate contact between raw water, treatment chemicals and previously formed precipitates. Upflow ananerobic sludge blanket uasb the uasbis a wastewater treatment system that uses microorganisms to biologically degrade pollutants. The system is selfmixed by the upflow movement of biogas bubbles and by the liquid flow through the. The use of up flow anaerobic sludge blanket anaerobic digestion systems.
The acid resistance of granular sludge and methanogenic bacteria and their metabolizing activity were investigated. A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it. Startup criteria for a upflow anaerobic sludge blanket. Ed07 initial stage of an upflow anaerobic sludge blanket. The wastewater enters the reactor through a well designed distribution system and is distributed equally over the bottom of the reactor. The anaerobic reactor is a upflow anaerobic sludge blanket reactor uasb. Innovative anaerobic upflow sludge blanket filtration. It has become the most popular and widely used highrate anaerobic wastewater treatment system worldwide schmidt and ahring, 1996, hulshoff pol and lettinga, 1986. Design and operation of an upflow anaerobic sludge blanket. Download this upflow anaerobic sludge blanket process ebook and keep it on your hard drive for later reference. Operation performance and granule characterization of. In this study, the twostage upflow anaerobic sludge blanket uasb system and batch experiments were employed to evaluate the performance of anaerobic digestion for the treatment of high concentration methanol wastewater. Fusionner pdf combiner en ligne vos fichiers pdf gratuitement.
Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water. This paper discusses the ecological and chemical composition of sludges from several. Anaerobic sludge blanket reactors global water pathogen. 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 found wide acceptance in the treatment of industrial wastewaters since its development in the netherlands. Mekala2 1pg scholar, erode sengunthar engineering college, perundurai, tamilnadu, india 2 assistant professor, department of civil engineering, erode sengunthar engineering college, perundurai, tamilnadu, india. Uasb reactor is a methaneproducing digester, which uses an anaerobic process and forming a blanket of granular sludge and. 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. Use of the upflow sludge blanket usb reactor concept for biological wastewater treatment, especially for anaerobic treatment. Modelling of an upflow anaerobic sludge blanket reactor. A laboratory scale upflow anaerobic sludge blanket uasb reactor study was done with spentwash distillery effluent as substrate.
Anaerobic sludge blanket reactors replace conventional primary and secondary treatment with sludge digestion, but their effluents require posttreatment to meet most regulatory requirements for discharge or reuse. Use of the upflow sludge blanket usb reactor concept for. The merits of anaerobic and aerobic bioreactors are. Integrated application of upflow anaerobic sludge blanket reactor for the treatment of wastewaters. Upflow anaerobic sludge blanket technology also known as uasb reactor is a form of anaerobic digester that used in wastewater treatment.
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. Anaerobic treatment of municipal wastewater in uasbreactors. It is normally referred to as uasb reactor, is a form of anaerobic digester that is used for wastewater treatment. Advantages and disadvantages of uasb reactor technology. Pdf integrated application of upflow anaerobic sludge. Effect of different parameters and developments for domestic wastewater treatment. Location where anaerobic sludge blanket reactors are. The digester consisted of a plastic tank with three rooms. The upflow anaerobic sludge blanket reactor is an effective highrate process for wastewater treatment. An area of more dispersed bacterial growth, name sludge blanket, is developed above the sludge bed, with solids presenting lower concentration and settling velocities. There was the main room, the second room and the gassolid separator or crosssection room.
Since the development of the upflow anaerobic sludge blanket uasb process by lettinga et al. The biothane uasb upflow anaerobic sludge blanket technology is a proven and reliable process, exclusively owned by biothane. In this research, a novel laboratory scale anaerobicupflow sludge blanket filtration combined bioreactor was designed and operated to improve the efficiency of the upflow sludge blanket filtration process for the simultaneous removal of phosphorus and nitrogen from wastewater. The objective of study was to create digester reactor design by using the upflow anaerobic sludge blanket uasb technology for manure handling to produce householdscale biogas. Wastewater enters the reactor from the bottom, and flows upward. Combine pdfs in the order you want with the easiest pdf merger available. Design and operation of an upflow anaerobic sludge blanket reactor d. The uasb reactor is a methanogenic methaneproducing digester that evolved from the anaerobic clarigester. This work discusses the perspectives of treating effluents through anaerobic. Upflow anaerobic sludge blanket uasb principle explained shiva kumar. 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. Treatability studies on hybrid upflow anaerobic sludge. Modelling of an upflow anaerobic sludge blanket reactor r.
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 raw wastewater originating from the industrial process requires pretreatment to prepare it for the anaerobic treatment process. The concentration of sludge in this area usually ranges between 1 and 3%. Murugesan manonmaniam sundaranar university, sri paramakalyani centre for environmental sciences, alwarkurichi 627 412, tamil nadu, india key words. Central leather research institute, adyar, chennai. Review of upflow anaerobic sludge blanket reactor technology.
Performance of upflow anaerobic bioelectrochemical reactor. The main objective of this thesis is to find out the start up of the hybrid upflow anaerobic sludge blanket huasb reactor for. Upflow anaerobic sludge blanket digestion wikipedia. The performance of a sludge blanket anaerobic baffled reactor was tested as an integrated treatment system for sourceseparated blackwater. The upflow anaerobic sludge blanket uasb reactor has found wide acceptance in the treatment of industrial wastewaters since its. The efforts have resulted in new type of upflow anaerobic sludge blanket uasb process.