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 18 of 18 for “"anaerobic reactor"”.
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APPLIED MICROBIAL ECOLOGY OF ANAEROBIC REACTOR MICROBIOMES
Open cultures of anaerobic reactor systems convert organic wastes or biomass residues into mainly short-chain carboxylates with two to five carbon atoms. The short-chain carboxylates can be converted into the highly reduced end product methane by methanogenic consortia in anaerobic digestion. …
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Anaerobic digestion of Fischer-Tropsch reaction water : submerged membrane anaerobic reactor design, performance evaluation & modeling
Includes abstract. Includes bibliographical references (p. 209-217).
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The design and control of anaerobic ponds with specific reference to Western Treatment Plant
… the control and improvement of the covered 115E Anaerobic Reactor at Western Treatment Plant. The 115E Reactor treats 60 ML of sewage per day and produces methane which is harvested for power production. The objectives of this research were to identify ways to enhance treatment efficiency and …
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Full-scale trials of external nitrification on plastic media nitrifying trickling filter
… (after primary settling) is discharged to the anaerobic reactor of the BEPRAS system, after which the activated sludge is separated from the water by internal settling tanks. The clarified supernatant is pumped to the trickling filter for nitrification and the activated sludge to the anoxic …
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Anammox-based Technologies for Sustainable Mainstream Wastewater Treatment: Process Development, Microbial Ecology and Mathematical Modeling
… developed in an upflow membrane-aerated biofilm reactor, where pure oxygen was delivered via gas-permeable membrane module. Chapter 3 demonstrated that hybrid anaerobic reactor (HAR) could be an effective pretreatment method to provide a relatively low COD/N ratio for nitritation-anammox reactor. …
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Investigation of the Effects of Sequential Anaerobic, Anoxic and Aerobic Zones on Dissolved Oxygen Transfer Parameters in a biological Nutrient Removal Pilot Plant
… of 0.71 as determined in a 21 liter bench scale reactor and an alpha of 0.332 as determined in a 0.45 m³ aeration basin of the 2.4 m³ pilot plant. Alpha of a 1:1 mixture of primary clarifier effluent with pilot plant return activated sludge was determined to be 0.94 at bench scale and 0.71 at …
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Nitrate utilization as the final electron acceptor in a biological phosphorus removal system
… The first system, System I, was operated as an Anaerobic/Anoxic process and the other, System II, was operated as an Anaerobic/Anoxic process. Both systems were operated at a 5-day sludge age and the same nominal hydraulic retention time of 9.1 hours (2.9 hours anaerobic, 6.2 hours anoxic or …
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Exocellular Polymeric Substances, Bioflocculation and Sludge Settling Properties in a Combined Anaerobic/Activated Sludge Process
Combined anaerobic/aerobic processes for municipal wastewater treatment is quite recent; the studies developed have shown these processes are feasible for the removal of organic, nutrient substances and reduction of sludge produced. Previous studies developed at the Marrero Wastewater pilot plant …
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Optimisation of small scale anaerobic digestion technology
The recent advances in anaerobic digestion (AD) technology and changes in government policies have contributed to the gradual increase in the establishment of on-site smallscale anaerobic digesters in developed regions, particularly in Europe. However, these advances have not completely eradicated …
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Anaerobic digestion comparison of manure leachate by high-rate anaerobic reactors
A multi-stage anaerobic digester (MSAD) has been developed to obtain high organic leachate from high solids organic waste, thus high-rate anaerobic reactors can be fed by manure leachate, which can be obtained from a leachate bed reactor. Such configuration not only makes feasible the application …
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Stoichiometry and kinetic modeling of an anaerobic baffled reactor, The
… dewatering, and exportation. Mainstream anaerobic treatment exhibits promising potential of becoming the sustainable wastewater treatment process of the future because of its energy generation potential from organics that are otherwise converted to solids under the current paradigm, lower …
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The effect of influent organic compounds on the performance of biological nutrient removal systems
… glucose, addition on phosphorus release under anaerobic conditions, and phosphorus uptake under aerobic conditions, were studied. The effects of the organic acid additions on the removal of nitrogen and COD, and changes in SOUR, MLVSS, and metals such as iron, magnesium, calcium and potassium, …
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Fate and Effect of Peracetic Acid Solutions on Biological Wastewater Treatment Systems
… long-term operation of semi-continuously fed bioreactors. The impact on nitrification was predominantly attributed to enzyme inhibition than to loss of nitrifiers, whereas the impact on denitrification was attributed to both enzyme inhibition and loss of culture viability. Intracellular reactive …
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International biogas applications
… analised through laboratory research. A special reactor was design and build for the co-digestion of Ulva lactuca, dairy slurry and grass silage. Continuous co-digestion of 25% U.lactuca, 5% dairy slurry and 70% grass silage based on volatile solids (VS) yielded 288 LCH4/kgVS, at an organic …
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Anaerobic / Aerobic Digestion for Enhanced Solids and Nitrogen Removal
Anaerobic digestion of wastewater sludge has widely been in application for stabilization of sludge. With the increase in hauling cost and many environmental and health concerns regarding land application of biosolids, digestion processes generating minimized sludge with better effluent …
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Growing an Enhanced Culture of Polyphosphate Accumulating Organisms using a University of Cape Town Membrane Bioreactor (UCTMBR) System
… sludge (AS) systems can be broken down during anaerobic digestion (AD; often used to treat sludge generated in WWTPs), which results in a release of the polyphosphate as orthophosphate and free metal counterions (mainly magnesium, potassium and calcium that formed part of the polyphosphate). …
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Evaluation of three carbon sources for the biological treatment of acid mine drainage through process modelling
… review of the literature, a model of the anaerobic digestion process has been compiled using Excel, with the reactor being simulated using MATLAB. The program for the reactor is based on the simulation developed by Knobel (1999) in OCTA VE. The reactor was simulated as a CSTR that was well …
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Diseño de un sistema de automatización de un reactor anaeróbico de conversión de biomasa (RACB) para el control de variables de proceso
… de temperatura, nivel y oxígeno para un reactor anaeróbico en la producción de ácido poliláctico (PLA), ubicado en el laboratorio de la Universidad EAN en la sede de la calle 71. La producción de PLA, un biopolímero ampliamente utilizado en plásticos biodegradables requiere condiciones de …