Τμήμα Μηχανολόγων Μηχανικών

Μόνιμο URI για αυτήν την κοινότηταhttps://repository.ihu.gr/handle/123456789/46850

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Πλοήγηση Τμήμα Μηχανολόγων Μηχανικών ανά Συγγραφέα "Simos, Panagiotis-Petros"

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  • Μικρογραφία εικόνας
    Τεκμήριο
    Design of a UASB application for biogas recovery from industrial wastewater
    (Τ.Ε.Ι. Κεντρικής Μακεδονίας, 2015-02) Simos, Panagiotis-Petros; Σίμος, Παναγιώτης-Πέτρος; Kapagiannidis, Anastasios; Καραγιαννίδης, Αναστάσιος; Σχολή Τεχνολογικών Εφαρμογών, Τμήμα Μηχανολόγων Μηχανικών Τ.Ε.; MSc in: Renewable Energy Systems: Design, development and optimization
    The road of human race over the centuries, characterized by a continuous effort to improve the living conditions and development the energy demand but in many cases, the development and any kind progress was made without respecting the environment. The majority of human activities produce wastes without any environmental treatment resulting in negative consequences such as pollution of air and water. Also the power demand of contemporary society increased the consumption of fossil fuels with known results for all of us (Greenhouse effect). Nowadays, on world agenda are Renewable Energy Resources because they can secure the energy supply and due to environmental friendly reasons. One emerging energy resource is biomass which can be used directly via combustion or indirectly by converting it into forms of biofuel. One form of biofuel is biogas which produced by the breakdown of organic matter in the absence of oxygen (anaerobic digestion). Exploitation of wastewater streams for biogas recovery via anaerobic treatment is nowadays widely accepted as a well-proved technology and extensively used. One of the main factors leading to the success of anaerobic treatment is the introduction of high-rate reactors in which biomass retention and liquid retention are uncoupled. High-rate anaerobic reactors that can retain biomass have a high treatment capacity and, therefore, low site area requirement. Several processes have been developed to operate anaerobic digestion reactors, each of them having several advantages. One of the most common is the UASB process that has successfully been used to treat a variety of wastewaters, exhibiting positive features, such as high organic loading rates (OLRs), short hydraulic retention time (HRT) and a low energy demand. The purpose of this work is to present the main features and conclude with the conceptual design of an Upflow Anaerobic Sludge Bed (UASB) reactor, being operated for the treatment of the wastewater stream of a medium-sized dairy industry. The biogas produced in the UASB application is used for the operation of a cogeneration unit for the production of thermal and electrical energy, which, in this sense, can be characterized as renewable. For start and to fully understand this procedure it will be presented the fundamentals of anaerobic treatment with basic design considerations of all aspects. Also this paper will present the characteristics, the factors that influence it, the benefits and disadvantages of an UASB reactor which basically is the “heart” of the whole process. Furthermore, in this work it will be a reference and a description of the individual parts and components of a typical biogas plant. Finally it will be analyze the costs and revenue generated.