Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"UASB"”.
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Operational problems in a UASB system treating distillery wastewaters
Includes bibliography.
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Pelletization in the upflow anaerobic sludge bed (UASB) reactor
… waste water in an upflow anaerobic sludge bed (UASB) reactor system. Past experience with this system suggested that a pelletized sludge would be produced due to the nature of the waste water. This indeed was observed but the system exhibited an unusual feature, a high removal of nitrogen far in …
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Secondary Municipal Wastewater Treatment Using the UASB/Solids Contact Technology
… presented herein describes the use of a combined UASB/aeration chamber system for the treatment of municipal wastewater and attempts to demonstrate the technical feasibility of using the UASB process as both a pretreatment unit and a waste activated sludge digestion system. The results indicate …
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Treatment of clam-processing wastewater using upflow anaerobic sludge blanket (UASB) technology
The Upflow Anaerobic Sludge Bed reactor (UASB) has been used successfully by the food processing, pulp and paper and municipal wastewater industries. High organic strength wastewater, limited space, extended down times and sludge handling and disposal have been critical factors in waste treatment …
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Avaliação da remoção de matéria orgânica e sólidos suspensos em reatores UASB e hibrido
A aplicação de reatores UASB e híbridos (UASB seguido de filtro anaeróbio em dispositivo único) pode ser uma alternativa para pequenos sistemas de tratamento de esgoto descentralizados. Entretanto, nesses sistemas ocorrem variações hidráulicas que podem comprometer a qualidade do efluente tratado. …
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Treatment of blue crab processing wastewater using Upflow Anaerobic Sludge Blanket (UASB) and air stripping technologies
… high concentrations of ammonia. In this study, UASB treatment of crab cooker wastewater was evaluated, in terms of COD and TSS reduction, and compared with previous anaerobic treatment efforts. Additionally, UASB and UBF treatment of crab cooker wastewater was demonstrated with pilot-scale …
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Microbial community analysis of a UASB reactor and application of an evolutionary algorithm to enhance wastewater treatment and biogas production
Submitted in complete fulfillment for the degree of Doctor of Philosophy (Biotechnology), Durban University of Technology, Durban, South Africa, 2015.
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Treatment of food processing industrial wastewater using two stages anaerobic system
… In this study, upflow anaerobic sludge bed (UASB) and hybrid-UASB (HUASB) reactors, were combined with anaerobic filter (AF) bioreactors forming two stages system to treat food processing industry wastewater. This study was focused on the performance of UASB-AF (R1) and HUASB-AF (R2) …
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Green grass: developing grass for sustainable gaseous biofuel
… with an Upflow Anaerobic Sludge Blanket (SLBR-UASB). These were operated on the same grass silage cut from the same field at the same time. Small biomethane potential (BMP) assays were also evaluated for the same grass silage. The results indicated that the CSTR system produced 451 L CH4 kg-1 …
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The Mesophilic and Thermophilic Anaerobic Digestion of Instant Coffee Waste Waters
… in single stage mesophilic and thermophilic UASBs. Using the same UASBs the effect of thermophilic preacidification was also studied.<br/><br/>Stable anaerobic digestion of settled instant coffee wastewater was achieved for over100 days in mesophilic and thermophilic UASB reactors. …
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Developments in anaerobic digestion modelling
… failure or even upflow anaerobic sludge bed (UASB) reactors (which have temporary failure conditions at the bottom of the bed). This study aims to develop an AD model capable of predicting failure and digester start-up conditions. Development of an improved model was accomplished by means of …
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Combined anaerobic-aerobic treatment of a simulated textile effluent
… TSS. An upflow anaerobic sludge blanket reactor (UASB) was more effective in treatment of STE than an inclined tubular digester (ITD) as it treated larger volumes of effluent and showed superior colour removal. Coagulation/flocculation was investigated as a pre-treatment but was found to be …
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Determination of Poultry Litter's Nitrogen-Fertilizer Value for Winter Wheat Production
… in late winter as a urea-ammonium sulfate blend (UASB) which was used to calculate PAN. Tiller number, aboveground N uptake, and grain yield responses to UASB-N were characterized using linear and quadratic models. Soil amended with PL or urea was incubated at 5, 15, and 25°C to supplement field …
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Anaerobic digestion comparison of manure leachate by high-rate anaerobic reactors
… the Upflow Anaerobic Sludge Blanket (UASB), fixed film, and a hybrid for processing manure leachate as a carbon source, but also to establish design criteria for such reactors including organic loading rates (OLRs) and hydraulic loading rates (HLRs). In the first part of this research, …
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Biomethane production from grass silage: laboratory assessment to maximise yields
… in a two-phase digestion system (leaching with UASB). When demand for electricity is low it is recommended to disconnect the UASB from the system and recirculate rumen fluid to increase volatile fatty acid (VFA) and soluble chemical oxygen demand (SCOD) production whilst minimising volatile …
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Weak acid/bases and pH control in upflow anaerobic sludge bed reactors
… of different types of wastes when treated in UASB systems, (2) monitoring process stability when treating these wastes under different operating conditions, e.g. different recycle ratios. • Assessment of H₂CO₃*alkalinity requirements for Iauter tun (brewery) waste to maintain a near neutral …
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ANAEROBIC TREATMENT OF HIGH SALINE PHARMACEUTICAL WASTEWATER
… (AnSBR), up-flow anaerobic sludge blanket (UASB) and anaerobic membrane bioreactor (AnMBR), and different types of biomasses as seeding inoculants were studied to investigate an efficient and sustainable process for treatment of high saline pharmaceutical wastewater. A comprehensive study on …
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Functioning Industrial Symbiosis Model Application to Organic Waste: A Case Study of a Paper Mill Company in Cochambamba, Bolivia
… of an Up-Flow Anaerobic Sludge Blanket (UASB) reactor on the wastewater treatment plant to digest organic material and capture and burn gas to produce energy. Analysis of case studies, wastewater biometric sampling, and theoretical CO2 discharge and reduction estimations were used to …
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Optimización y escalado de la digestión anaerobia de microalgas y aguas residuales urbanas. Una alternativa a las depuradoras tradicionales
… del agua residual y la estabilización del lodo (UASB y CSTR) bajo distintos regímenes térmicos (psicrófilo, ambiental, mesófilo y termófilo), a escala de laboratorio y piloto. Ambos procesos están enmarcados en un sistema de tratamiento de aguas residuales basado en el uso de cultivos …
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