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Μοντελοποίηση διεργασιών μονάδας αποτέφρωσης στερεών απορριμμάτων

Kardaras Georgios

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Summary

Process, management and the later on disposal of the treated waste have become a necessity in modern day life. The continuous growth in waste production in the developed world alongside with the rise in energy demand and the fluctuations of crude oil prices has forced us to turn to alternative power sources that will decrease the waste volume.Public awareness in environmental issues and the now knowledge of the level of the environmental destruction that the human activities have caused, made society receptive (even Greek one) to waste management solutions that in the past would have been out of reason and immediately rejected.Thermal waste treatment was a taboo issue for Greek society. Misinformation and ignorance made public extremely negative in this form of treatment that solves in the same time two of the problems that this society faces, waste accumulation and energy shortage. With the economic crisis raging it is time to propound innovative solutions (for the country) and to break away from outmoded ideas.This thesis aims to explore if the economic and environmental capabilities of Arcadia County meet the criteria for the operation of a waste to energy plant.Deposition in unmonitored landfills is the main way that the wastes are treated in the region. Environmentally this is the worst-case scenario. There are plans for this to change but the implementation is either slow or not excising at all. Key information is the dependence of Greece in fossil fuels, which contradicts the European perspective for decreasing the fossil fuel use in the next five years.The results of this thesis show that the operation of a waste to energy plant in Arcadia County is economically and environmentally feasible. The unit was designed to treat 61.000 tons of household waste annually and able to produce (depending on the waste composition) 55 GWh of electrical energy and 119 GWh of thermal energy. Annual revenues are somewhere between 9 and 10 million Euros.

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