Importância de componentes em sistemas de águas residuais e pluviais
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2014
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A presente dissertação tem como objetivo principal contribuir para a avaliação da importância de componentes (IC) em sistemas de águas residuais e pluviais. É um tema reconhecido internacionalmente e que tem ganho um interesse crescente pela sua relevância para a tomada de decisão das entidades gestoras no planeamento da reabilitação e gestão destes sistemas.
Propõe-se uma metodologia vocacionada para efetuar a avaliação dos componentes em função da sua importância no sistema global, que permite identificar os coletores cujo funcionamento tem maior importância para o desempenho desse sistema global. Com esta informação, as entidades gestoras poderão sustentar melhor as suas prioridades e opções de intervenção e assim alocar de forma mais eficiente os recursos humanos e financeiros na gestão técnica dos sistemas, minimizando as consequências indesejáveis do funcionamento deficiente dos sistemas.
Para avaliar a importância de componentes, recorreu-se à modelação matemática, com utilização do software SWMM – Storm Water Management Model, para estudar o comportamento hidráulico de sistemas, exportando os resultados de simulação, nomeadamente das variáveis, altura e velocidade de escoamento. Foi desenvolvida uma rotina para o processamento automático dos resultados de simulação e para o cálculo das métricas selecionadas para caracterizar a importância de componentes. Estas permitem avaliar o funcionamento dos sistemas face a diferentes níveis de sedimentação e fatores de carga. Os resultados da avaliação são inseridos num sistema de informação geográfica (SIG), permitindo a visualização detalhada dos resultados ao nível do coletor.
A verificação e o teste da metodologia foram aplicados com sucesso à bacia da Venteira, na Amadora, pertencente ao sistema gerido pelos SIMAS de Oeiras e Amadora. Os resultados permitem concluir a relevância da avaliação da importância de componentes para que as entidades gestoras possam sustentar as suas decisões de reabilitação e manutenção, contribuindo assim para um melhor cumprimento das metas de gestão técnica destas entidades.
This dissertation aims to contribute to the assessment of the importance of components (IC) in wastewater and stormwater systems. This topic applicability is internationally recognized and has gained increasing interest due to its relevance to the decision making of water utilities of urban water systems for rehabilitation planning and overall systems management. The proposed methodology for components importance assessment, is based on the relevance of an individual component and its objective is to identify which components are more important to the performance of the overall system. With this information the managers can better support their intervention priorities and options and more efficiently allocate human and financial resources in the systems’ technical management while minimizing the undesirable consequences of poorly functioning systems. Mathematical modeling was used to assess the importance of components, using the software SWMM – Storm Water Management Model, and to study the hydraulic behaviour of systems by exporting simulation results for the components including water depth and flow. A routine for the automatic processing of the simulation results and the calculation of selected metrics was developed. With these results, assessment of the systems’ performance for different sedimentation levels and load factors was carried out. Results were imported into a geographic information system (GIS), allowing detailed visualization of the results at the sewer level. The verification and testing methodology has been successfully applied to the catchment of Venteira, Amadora, within the area managed by SIMAS Oeiras and Amadora. Results indicate that the assessment of the components importance can be relevant to utilities to better decisions for rehabilitation and maintenance, therefore contributing to the achievement of the established technical management goals.
This dissertation aims to contribute to the assessment of the importance of components (IC) in wastewater and stormwater systems. This topic applicability is internationally recognized and has gained increasing interest due to its relevance to the decision making of water utilities of urban water systems for rehabilitation planning and overall systems management. The proposed methodology for components importance assessment, is based on the relevance of an individual component and its objective is to identify which components are more important to the performance of the overall system. With this information the managers can better support their intervention priorities and options and more efficiently allocate human and financial resources in the systems’ technical management while minimizing the undesirable consequences of poorly functioning systems. Mathematical modeling was used to assess the importance of components, using the software SWMM – Storm Water Management Model, and to study the hydraulic behaviour of systems by exporting simulation results for the components including water depth and flow. A routine for the automatic processing of the simulation results and the calculation of selected metrics was developed. With these results, assessment of the systems’ performance for different sedimentation levels and load factors was carried out. Results were imported into a geographic information system (GIS), allowing detailed visualization of the results at the sewer level. The verification and testing methodology has been successfully applied to the catchment of Venteira, Amadora, within the area managed by SIMAS Oeiras and Amadora. Results indicate that the assessment of the components importance can be relevant to utilities to better decisions for rehabilitation and maintenance, therefore contributing to the achievement of the established technical management goals.
Descrição
Orientação: Maria do Céu de Sousa Teixeira de Almeida ; co-orientação: Maria Adriana Canas Mendes de Almeida Cardoso
Palavras-chave
ENGENHARIA CIVIL, MESTRADO EM ENGENHARIA CIVIL, SISTEMAS DE DRENAGEM, ÁGUAS RESIDUAIS, ÁGUAS PLUVIAIS, AVALIAÇÃO DO DESEMPENHO, DRENAGEM URBANA, CIVIL ENGINEERING, DRAINAGE SYSTEMS, WASTEWATER, RAINWATER, PERFORMANCE EVALUATION, URBAN DRAINAGE