1000 resultados para Sistemas de abastecimento de água - Optimização
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About eighty percent of the Brazilian municipalities have their residues in environmentally unsuitable sites and socially insalubrious. In this context, in the year 2010, instituted the National Policy on Solid Residues, which aims to integrated management and management environmentally appropriate of solid residues in Brazil (JUCA, 2002).The problem of urban residues is related to its origin and production in the same way that the concept of inexhaustibility and reflexes of compromising the environment, especially the pollution of soil, air and water resources (LIMA, 1995). Seeking a better residues management in the municipality of Apuí / AM and continuing work already started, Plan Solid Residues Management of the Apuí / AM, this work came to propose a better environmental compliance in relation to solid residues compared to 12305/2010 law that established deadlines / timelines on some actions such as landfills and the consequent elimination of environmentally sound disposal of residues by 2014 and thus began a study of potential areas for the implementation of the landfill were evaluated taking into consideration technical aspects (soil, vegetation, climate, hydrography, etc), legislation and Google Earth imagery. The result of the work over the 6 areas proposed by the City Hall was the choice of AREA 4 as the most indicated for the implementation of the landfill for the city of Apuí, which has 18,325 inhabitants (IBGE, 2011); some considerations were made if a new area can be proposed by the city to implement the landfill
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Não disponível
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Pós-graduação em Relações Internacionais (UNESP - UNICAMP - PUC-SP) - FFC
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Pós-graduação em Engenharia Mecânica - FEIS
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Geociências e Meio Ambiente - IGCE
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Introduction: The fluoridation surveillance in the public water supply came up with the need to develop mechanisms that would help society in the control of water quality. To perform reliable analysis, variables such as depth of the wells and pluvial variations should be subject of research and study. Objectives: To analyze the fluoride levels of deep wells in periods of rain and drought, corresponding to four brazilian cities and compare the results. Methodology: It was made the mapping of the water supply network and the identification of the sampling points according to the number of deep wells in each locality, selecting those who had the natural fluoride level. Three points were defined for each source of water supply, and the addresses were randomly selected. The samples were analyzed in duplicate at the laboratory of the Center for Research in Public Health of the Dentistry School of Araçatuba – UNESP, during 8 months, in periods of rain and drought (total absence of rain). Results: 174 analysis were conducted, the mean fluoride levels for rain and drought times were, respectively: 0,71 and 0,73. It was used the Student’s t test (p <0.05). Conclusion: There wasn’t statistically significant differences for the periods of rain and drought in any of the cities, at the year of 2010. This study highlights the importance of health surveillance, because beyond of ensuring social control, there is also the search for investigating variables that may have directly and / or indirectly influence on the results of the analysis.
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Planning and sustainable management of water resources require actions that focuses on life quality, recovery and preservation of natural resources. As such, a municipality must have tools which empower the government with the right to exercise such actions, for example, the Master Plan and Sector Plans. To develop municipal plans which will guide the development of the city and provide information for establishment of public policies, it is of the utmost importance that they are designed based on primary and safe data. In view of these considerations, this study aimed at formulating environmental indicators by using a Geographic Information System – GIS. The environmental diagnosis based on the gvGIS was used as database, which made the process to be agile and accurate. The watershed of Lençóis River – SP was the study area. It has a good database from the Environmental Diagnosis of the watershed of Lençóis River, which was created through funds from the State Funds for Water Resources – FEHIDRO. The borrower was the Service of Water Supply and Sewage of Lençóis Paulista – SAAELP. Based on the diagnosis, the indicators were formulated concerning land use and occupation as well as water resources. The results were considered satisfactory and showed that the methodology used in this study is of great importance to evaluate water resources, as it provides a reliable basis for the decision-making process seeking environmental compliance and sustainable development. By using environmental indicators, the sustainability of an area as a whole can be analyzed, and the parts as well, i.e., it is possible to identify which sector is experiencing significant problems and take actions to solve them.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Geociências e Meio Ambiente - IGCE
Ocorrência de compostos de interesse emergente no aquífero Dunas-Barreiras e nos esgotos de Natal/RN
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The detection of emerging interest microcontaminants in environmental samples of surface water, groundwater, drinking water, wastewater and effluents from water and sewage treatment plants (WTP and STP), in many countries, suggests these pollutants are widespread in the environment, mainly in urban areas. This is a reason for great concern, since many of these compounds are potentially harmful for humans other living beings, and they are not efficiently removed in the majority of WTP and STP, which is exacerbated by precariousness of water supply and sanitation services. In Natal, like other Brazilian cities, the sewage system serves only part of the urban area (about 30%), so that the rest of the wastewater is infiltrated in the sandy soil of the region in cesspool-dry well systems. This has resulted in contamination of groundwater in the area (sand-dune barrier aquifer, which supplies more than 50% of the city population), which has been observed by the increase in nitrate concentration in supply wells. The vulnerability of the sanddune barrier aquifer, combined with reports of the presence of emerging interest microcontaminants in Brazil and worldwide, led to this research, which investigated the occurrence of fifteen microcontaminants in Natal groundwater and sewage. Samples were collected at five wells used for water supply, the raw sewage and the effluents from biological reactors from STP (UASB and activated sludge reactors). Two samples of each sample were taken, with one week apart between the samples. To determine the contaminants, extraction of aquifer water, and raw and treated sewage samples were performed, through the technique of using SPE Strata X cartridge (Phenomenex®) to the aquifer water, and Strata SAX and Strata X (Phenomenex® ) for samples of raw and treated sewage. Subsequently the extracts were analyzed using GC-MS technique. Much of the analyzed microcontaminants were detected in groundwater and sewage. The concentrations in groundwater are generally lower than those found in the sewers. Some of the compounds (estrone, estradiol, bisphenol A, caffeine, diclofenac, naproxen, paracetamol and ibuprofen) are partially removed at STP.
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Pretende-se com este trabalho avaliar a importância dos sistemas de aproveitamento de água da chuva como medida contributiva para a sustentabilidade dos recursos hídricos, a par do alerta para os preços praticados em Portugal, que comprometem a viabilidade deste tipo de sistema. Será também dada especial atenção à vulnerabilidade a que os referidos sistemas estão sujeitos, imposta pelos meses de Verão, onde os consumos de água são substancialmente maiores, mas durante os quais normalmente não ocorre precipitação. Após uma primeira componente teórica, determinar-se-á numa fase posterior o consumo anual de água registado numa moradia em Guimarães, e comparar-se-ão os resultados dos investimentos num sistema de aproveitamento de água da chuva em Portugal e na Dinamarca. Ampliando o âmbito para um edifício de escritórios e um edifício escolar, registar-se-á a rentabilidade do sistema. Essa rentabilidade, referindo-se ao número de anos em que o investimento é amortizado, é determinada numa folha de cálculo a partir da conjugação do valor investido com o valor que, anualmente, se consegue poupar com o uso da água da chuva. Concluir-se-á que o factor que verdadeiramente compromete a diferença entre o investimento e a poupança, reside no baixo valor do metro cúbico de água que, em média, se paga em Portugal. O estudo realizado nesta Dissertação revela que um valor mais alto para o preço da água, traduzir-se-ia numa menor diferença entre o investimento e a poupança, do qual resultava um período de retorno significativamente mais baixo. Além disso, os sistemas de aproveitamento de água da chuva são vulneráveis a diversas dificuldades, como as condições meteorológicas, que se traduzem na falta de precipitação nos meses de Verão onde a procura de água é muito superior.
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The career of civil engineer Henrique de Novaes, a remarkable figure in the academic, technical and political fields, demonstrates its extensive and relevant work across Brazil in the first half of the twentieth century. It covered from the design of water supply and sewage works, road and rail transport networks, works against drought in the Northeast, hydroelectric and harbor facilities to the urbanization planning and architectural projects, which displays a systematic and multiple production. City and territory conformed to his fields of verification, practical and above all, transformation. The search for understanding of the inclusion of a social actor in this process thus contributes to the specific analysis of the doings of Henrique de Novaes, who graduated at Polytechnic School of Rio de Janeiro in 1906. From a polymorphic activity in different scales, one tries to figure how, through academic education or professional practice, urban history in Brazil can be told or built. The introduction of technological innovations matched the purposes of planning and urban sprawl, as well as met the specifications of regulation and institutionalization of public infrastructure services at the time. The overall plans proposed by the engineer thought of the city as a whole, interconnected to the structural networks. At the same time, the knowledge of a larger physical scale the territory bounces back in the urban in a relationship of reciprocity and completeness. The objective research, therefore, tries to understand the roles played by Henrique de Novaes s works and academic education in the accomplishment of systematic modernization of Brazilian urban space and territory, recovering a little known historical figure by current historiography. It is proposed, as methodological axis, that the study of this professional career configures itself as an essential element for understanding the idea of progress embodied in the technical studies and proposals for improvements and sanitation nationwide in the first half of the twentieth century . The primary sources for the construction of this analysis were technical articles in journals of the period ( Clube de Engenharia , Viação e Revista Brasileira de Engenharia ), and technical reports, government messages, newspaper articles published at the time, autobiographical reports and the engineer s verbal communications with relatives. The work is structured in three chapters: "Biographical traces, academic education and 'technical and political' activities" illustrates the initiation into the technical, public and political environment; Chapter 2, "Technique and territory" outlines his network understanding through sanitation and transport services; Chapter 3 "Technique and City" describes the influence of polytechnics knowledge on the propositions of modernization of cities; Finally, "Final Thoughts: An Evaluation," presents an overview of the affiliations and practice of an engineer in the different scales, and its contribution to the modernization of Brazilian urban and territorial space