| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 4.8 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
No âmbito da política nacional de gestão dos resíduos urbanos e face à necessidade de
desviar os resíduos urbanos biodegradáveis de aterro e aumentar a taxa de recuperação dos
recicláveis, os investimentos nesta área foram direcionados para as unidades de tratamento
mecânico e biológico.
Neste trabalho de dissertação explorou-se o caso prático do sistema de gestão de resíduos
urbanos da Suldouro (unidade de valorização e tratamento de resíduos urbanos), de modo a
avaliar a possibilidade de tratamento dos excrementos de animais de estimação, assim
como antecipar possíveis alterações no processo produtivo. Quanto ao desempenho do
sistema de tratamento de resíduos da Suldouro verificou-se que cerca de 50% de todos os
resíduos que entram na CVO é matéria orgânica, existindo ainda outros resíduos com
pouca qualidade, provocando sobremaneira um grande desgaste nos equipamentos com o
consequente investimento para a reparação e manutenção dos equipamentos (como por
exemplo, o Pulper) que a longo prazo traria inúmeros benefícios, o que faria com que as
cidades de Vila Nova de Gaia e Santa Maria da Feira subissem no ranking das cidades
sustentáveis da UE, de acordo com as metas que estão estabelecidas para o ano de 2020.
Uma parte dos resíduos urbanos indiferenciados é constituída por resíduos orgânicos de
animais de estimação. No tocante à quantidade de animais de estimação em Portugal, foi
feito um estudo que veio a provar que os novos estilos de vida têm provocado um aumento
do número de animais que habitam juntamente com as famílias nas habitações, no entanto
este estudo não inclui os animais de companhia que habitam no exterior (por exemplo no
quintal ou no jardim).
Do ponto de vista experimental, foram realizados ensaios de digestão anaeróbia de dejetos
de gato isoladamente e em misturas com a biomassa residual alimentada ao digestor
anaeróbio da Suldouro, tendo sido concluído que existe potencial metanogénico naqueles
resíduos.
In the context of the national policy on urban waste management and in view of the need to divert biodegradable municipal waste from landfills and increase the rate of recovery of recyclables, investments in this area have been directed towards mechanical and biological treatment plants. In this work, the practical case of the urban waste management system of the Suldouro (urban waste recovery and treatment unit) was explored in order to evaluate the possibility of treating pets’ manure, and to anticipate the need for adaptation on the production process. Regarding the performance of the Suldouro waste treatment system, it was verified that about 50% of all the waste entering the CVO is organic matter with poor quality, causing a great deal of wear and tear on the equipment with the consequent investment for repair and maintenance (Such as Pulper) which in the long term would bring numerous benefits, which would make the cities of Vila Nova de Gaia and Santa Maria da Feira rise in the ranking of sustainable cities in the EU, according to the goals that are established for 2020. A part of municipal solid waste consists of organic wastes of pets. With regard to the number of pets in Portugal, a study was made that proved that new lifestyles have caused an increase in the number of animals that live together with the families in the dwellings, however this study does not include animals (eg. in the yard or in the garden). From the experimental point of view, it was carried out tests of anaerobic digestion of cat waste alone and in mixtures with the residual biomass fed to the anaerobic digester of Suldouro, having been concluded that there is methane potential in those residues, so its selective collection should be implemented.
In the context of the national policy on urban waste management and in view of the need to divert biodegradable municipal waste from landfills and increase the rate of recovery of recyclables, investments in this area have been directed towards mechanical and biological treatment plants. In this work, the practical case of the urban waste management system of the Suldouro (urban waste recovery and treatment unit) was explored in order to evaluate the possibility of treating pets’ manure, and to anticipate the need for adaptation on the production process. Regarding the performance of the Suldouro waste treatment system, it was verified that about 50% of all the waste entering the CVO is organic matter with poor quality, causing a great deal of wear and tear on the equipment with the consequent investment for repair and maintenance (Such as Pulper) which in the long term would bring numerous benefits, which would make the cities of Vila Nova de Gaia and Santa Maria da Feira rise in the ranking of sustainable cities in the EU, according to the goals that are established for 2020. A part of municipal solid waste consists of organic wastes of pets. With regard to the number of pets in Portugal, a study was made that proved that new lifestyles have caused an increase in the number of animals that live together with the families in the dwellings, however this study does not include animals (eg. in the yard or in the garden). From the experimental point of view, it was carried out tests of anaerobic digestion of cat waste alone and in mixtures with the residual biomass fed to the anaerobic digester of Suldouro, having been concluded that there is methane potential in those residues, so its selective collection should be implemented.
Description
Keywords
Excrementos de animais de estimação Gestão de resíduos Potencial bioenergético Bioenergetic potential Pets’ manure Waste management