998 resultados para Métodos de avaliação de impactos ambientais
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Cardoso Island, settled in the south of paulista region, is characterized by its ecological importance due to the great biodiversity of Mata Atlântica and for accommodating several kinds of ecosystems as mangroves, which were considered by UNESCO as human natural ownership. The mangroves are among the most important marine ecosystems, known as warranty of biological productivity and diversity and supply of food and economical resources to the local population. Although the island has been transformed in a state park for preservation, it hasn’t become free from environmental impacts made by antropical activities. This way it was proposed a rebuilt of an evolutionary process in the region, having as an objective to subsidize programs of environmental conservation and planning , aiming to a sustainable development. For this it was used a isobasis methodological analyses where by the drainage channels and its confluences makes relative maps to the different base levels represented by the isobasis, characterizing itself by an attempt to rebuilt the preterit local landscape. There were elaborated eight maps referring to four orders of confluences met in the region of Cardoso Island and round it where you can conclude it is about an appropriate methodology to rebuilt preterits environments that specially aim to actions of environmental planning and conservation.
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Currently, in Brazil, the quantity and quality of new types of wastes, discarded without criteria in urban areas, has been responsible for considerable impacts on public health and the environment. According to a report prepared by the Institute of Applied Economic Research (IPEA), the country loses about U.S. $ 8 billion annually, due lack of waste recycling, which go directly into landfills or dumps. Among these solid wastes are waste electrical and electronic equipment (WEEE), whose characteristics are complex, by having in its composition substances of high value-added and other health hazards which require different treatment of household waste. Aiming to fill the gap in Brazilian environmental legislation, on 02/08/2010, was sanctioned the National Policy Solid Waste (Law No. 12,305), already regulated on 23/12/2010 (Decree No 7404), whose based on the following principles:reduction of waste generation and toxicity of shared responsibility, proper planning management, social inclusion of waste pickers and sustainable production and consumption. Given the above, this work presented here, aims generally present a diagnosis of the current situation of electronic waste generated in the Faculty of Engineering, Campus Guaratinguetá, FEG / UNESP, to provide data for management and management of these waste, based on sustainability, the economic losses and minimizing environmental impacts and public health related to the flow and the improper disposal of these wastes
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The objective of this work is present and analyze the standards and guidelines associated with the protection of health of the user of waters less noble, for purposes other than drinking, and more specifically, the criteria descriptors of quality of these waters and the assessment of microbiological risk associated to its use aiming to establish, with bases and scientific criteria, the tolerable risk and the definition of standards for the microbiological quality. To this end, the author makes use of investigative exploratory method based on bibliographic survey and acquisition and posterior analysis, presentation and discussion about the topics discussed. The final text may inform and subsidise decisions regarding the definition of new values (preparation of new standards) and in the definition of appropriate technology
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The objective of this work was collect information of articles published previously and carry out a study about them, including contents and interesting stuff that bring growth regarding the construction residues utilization and demolition (RCD), that today provides many environmental impacts. The need of utilization of the RCD in Brazil and in the world earned bigger attention world speaking, therefore the industry of the civil construction is had as one of the biggest present residues output springs. For it present a point that can be applied the RCD, is discussed in that work the kinds and structures of floors, where are presented the layers and, finally, a short argument about the possible and economic feasabilities job of the residues recycled in some layers of the structure of floor
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Com a evolução da humanidade, o homem foi ganhando habilidades das quais, a maior parte, usa para alterar seu próprio hábitat, ou seja, à medida que o homem se distanciou da natureza e começou a evoluir no seu modo de vida, passou a encará-la como uma gama de recursos disponíveis. Frente ao surgimento de tais problemas sócio-ambientais relativamente atuais, torna-se essencial em nossa sociedade a conscientização vinculada à conservação; o uso sem obter como consequência os impactos ambientais. É dentro deste contexto que este projeto de pesquisa ancora-se, tendo a questão ambiental como foco principal. Como um desafio, tornar arquitetura e a educação ambiental elementos que naturalmente se interliguem, ser um processo permanente na sociedade atual. Abolir o pensamento de que diferentes espécies de edificações, com seus diferentes usos, possam gerar conflitos quando atrelados ao conceito de educação ambiental e sua permeabilidade na sociedade. Com base nesse importante fato, surge a seguinte hipótese: se existe algum tipo de arquitetura inadequada a se implantar em um local onde a preocupação com a preservação do meio-ambiente é fator prioritário... (Resumo completo, clicar acesso eletrônico abaixo)
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The region of the biome Cerrado is under threat due to the replacement of their native areas for expansion of agriculture and livestock. This occupation is responsible for the loss of about 50% of two million square kilometers of original native savannah. The land use, without control or zoning, has caused serious damage to natural resources of this biome, considered as an international hotspot area. As a result, some problems caused by ecological imbalances already topping the urban and rural environments, such as species extinction, water scarcity and desertification. Any occupation in this biome should be evaluated with caution, because this region, besides being considered one of the most productive of Brazil, is also rich in biodiversity and water resources. The understanding of the importance of the Cerrado biome and its remaining areas, allows the preparation of detailed studies of environmental valuation, which is essential for the development of conservation policies, avoiding even greater environmental impacts. To meet the growing demand for food, you can increase productivity through agroforestry, for example, and to preserve the remaining areas, you can create new protected areas and tailor existing units
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Este trabalho apresenta o resultado de estudo e análise do espaço urbano de São Pedro/SP para avaliar a interferência da urbanização nas mudanças geomórficas e na formação de feições associadas a processos erosivos lineares acelerados. A área de estudo localiza-se na porção centro-oriental do estado de São Paulo, distando cerca de 198 km da capital. Encontra-se limitada pelas coordenadas 22º30’ e 22º45’ de latitude sul e 47º45’ e 48º00’ de longitude oeste. (FACINCANI, 1995, p.4). Para atender ao objetivo proposto, foram realizados mapeamentos geomorfológicos e do uso da terra ao longo do processo histórico de expansão da área urbana do município, mais precisamente desde 1970 até o período atual, com base na proposta técnica de Tricart (1965) e Anderson (1979), respectivamente. Para isso, foram utilizadas fotografias aéreas de escala 1:25.000, 1:40.000 e 1:30.000, referentes respectivamente, aos cenários de 1972, 1988 e 2000. Para realização da análise integrada da dinâmica do uso da terra e das alterações geomórficas foi utilizada a “Teoria Geral dos Sistemas” como orientação metodológica, uma vez que uma das principais preocupações do geógrafo são os impactos ambientais e, conforme Christofoletti (1986), para compreender e executar ações preventivas e de recuperação do meio degradado, é necessário obter conhecimentos adequados desses processos, com base numa abordagem integrada do espaço, visando à compreensão do funcionamento e do equilíbrio da natureza integrados com as atividades humanas. Dessa forma, este estudo constatou que a expansão urbana de São Pedro foi uma das causas do surgimento e evolução das diversas voçorocas existentes na área de estudo. Ainda, por meio de... (Resumo completo, clicar acesso eletrônico abaixo)
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The Companhia Energetica de Sao Paulo - CESP owns six hydroelectric dams in the state of São Paulo. The dams, both in its construction and in operation, cause some environmental impacts, most of them negatives, for example, the flooding in regions before not flooded, deviation of the river’s course, among others, bringing harm to flora and fauna of these environments. As a way to compensating these damages, the CESP has acquired a region that was influenced by Sérgio Motta Hydroelectric Plant Engineer, or Porto Primavera, and turned it into Reserva Particular do Patrimônio Natural Foz do Rio Aguapeí. By law it fits in a Conservation Unit, and thus should be contemplate for a management plan, ie, a multidisciplinary technical document which allows, simply, the practice of actions within and around in a sustainably way. This work aimed at developing a land cover map of the reserve for this plan can be made and executed more efficiently. Initially, the project included field visits and meetings with members of the CESP to be specified classes contained on the map. Later, we ran different types of classifications of multispectral images (TM / Landsat 5)... (Complete abstract click electronic access below)
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O modo de produção agrícola vigente é causador de impactos ambientais. Estes impactos podem ser representados, por exemplo, pela devastação de matas e florestas com o intuito de expandir a fronteira agrícola, a erosão do solo e a poluição das águas, da terra e do ar. Este trabalho mostra que a relação entre a atividade agrícola e o meio ambiente não precisa ser litigiosa, podendo conviver de forma harmônica. Para isso, foram estudados os programas criados pelo Ministério da Agricultura, Pecuária e Abastecimento (MAPA) que articulam as políticas ambientais e agrícolas em prol do desenvolvimento sustentável. São exemplos destes programas a Integração Lavoura-Pecuária-Floresta (ILPF), o plantio direto na palha e o programa Agricultura de Baixo Carbono (ABC)
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A ocupação humana desordenada e sem planejamento pode resultar em impactos ambientais como esgotamento do solo, perda de cobertura vegetal, erosão e perda de solo, assoreamento de leitos fluviais, contaminação das águas (superficiais e profundas), entre outros. Estas conseqüências estão presentes também no município de Ipeúna-SP, onde predominam as pastagens e o cultivo de cana-de-açúcar. Este quadro atual mostra a necessidade de se desenvolver estudos e levantamentos que contemplem diversos fatores ambientais (bióticos e abióticos) básicos para o entendimento das características, potencialidades e fragilidades da área, possíveis de subsidiar o planejamento e a gestão do uso da terra e adequar a utilização dos recursos naturais disponíveis com conservação do meio ambiente. O estudo da fisiografia permite a caracterização e classificação das paisagens terrestres levando em consideração os fatores formadores destas paisagens (clima atual e passado, hidrologia, geologia, geomorfologia e indiretamente aspectos bióticos) e as relações (processos) que os afetam. Desta forma, o objetivo da pesquisa foi investigar as características fisiográficas do município de Ipeúna-SP e, assim, contribuir para o melhor conhecimento dos aspectos do meio físico. Para atingir o objetivo foram realizadas as técnicas de interpretação de fotografias aéreas em escala 1:25.000, geoprocessamento e levantamentos de campo. A sistemática de trabalho adotada se resume a duas etapas: I) diagnóstico zero e; II) análise fisiográfica. O resultado final é o Mapa Fisiográfico em escala 1:50.000. A análise fisiográfica permitiu identificar e compreender os processos endógenos e exógenos que atuam e atuaram na evolução paisagem. O município de Ipeúna-SP é caracterizado por paisagens policíclicas de origem aluvial, coluvial/aluvial e estrutural... (Resumo completo, clicar acesso eletrônico abaixo)
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The competitiveness among global markets, the constant need for reducing manufacturing costs and also the growing environmental commitments are fueling the development of techniques for recovery residual parts generated by industrial processes. Among the various areas of a company, we highlight those that involve the processing of raw materials derived from oil, such as polymers (resins), which may take centuries to decompose in the environment and also present as a economic and environmentally strategic point. Thus, this study would examine the recovery of waste polypropylene, from the injection process of a major multinational in the field of home appliances through the recycling by a process comprising the milling, extrusion and chipping of waste material. Easy to deploy, this proposal aims to reduce levels negligible disposal (scrap) of these residues as well as the reintegration of the production process into pieces no visual and no structural importance, aimed at cutting costs and reducing environmental impacts caused. After the survey data in kilograms of waste material generated in a given period of time, and the study of changes in material properties, it would enable the reuse steadily in the injection process
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In Brazil, rates of urban solid waste generation increase proportionally more than the annual growing of the population. The government, from its federal authority to the municipal spheres, faces increasing challenges for Urban and Environmental management regarding to solid waste in general and, in particular, municipal solid waste. Financial problems added to public health problems that worsen with the serious environmental impacts generated every year. In August 2010 Brazil the PNRS (National Policy on Solid Waste) was approved and sanctioned in which represented a true watershed in the country as a legal framework extremely ambitious and visionary. This work presents the successes and challenges that the municipality of Sorocaba/SP is facing after more than three years of PNRS sanctioned to conduct an Urban and Environmental management suited to the new legal bases towards the subject of solid waste. The results show a large gap between the content proposed by the law and the technical, financial and temporal reality to practical implementation by the municipal government. New legislation and federal incentives, consortiums among the cities, flexible deadlines and environmental education at all levels are certainly some proposals to catalyze processes that aim to solve and overcome the challenges of solid waste
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The building sector can cause the environmental degradation, by the natural resources consumption, machinery use and natural landscape modifying. The environmental management system (EMS) improves the environmental quality and makes the companies more competitive. So, this work developed an environmental management system in a building site focused on the solid waste and in the development of mitigation proposals for the most significant environmental impacts. To develop this work it was necessary to follow the building site activities; evaluate the solid waste management; identify the law requirements; identify the environmental aspects and impacts; evaluate the environmental impacts; and propose alternatives for mitigating the adverse environmental critical impacts. The main proposals are the reduction of the waste generation in the place that it’s generated; the reuse and correct final disposal of that wastes; the treatment and reuse of the effluent; and the supervising in the trucks and machineries avoiding the oil spilling and the air pollution
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The volume of liquid effluent generated in cattle slaughterhouses is quite high and cannot be released untreated in water bodies due to its high pollution load of predominantly organic origin. To minimize the environmental impacts of its industrial wastewater and meet the local environmental legislation, abattoirs shall make the treatment of these effluents. The present work aims to develop the study of a reactor by sequential batch pilot scale, in order to optimize their performance in treating wastewater from a cattle slaughterhouse. The treatment system used was developed and installed in the Laboratory of Wastewater Treatment, in Faculty of Science and Technology UNESP, Presidente Prudente campus. The procedure used followed the operation of sequential batch reactors, in which all processes and treatment operations occurring sequentially in a single unit, by establishing specific operating cycles, which comprise the following separated phases: aerobic reaction, anoxic reaction, sedimentation and emptying. Aiming to improve the quality of treatment was planned the addition of coagulant Poly Aluminum Chloride (PAC) in the reactor, by determining their optimal dosage by Jar-test trials. Were prepared four steps with specific operating cycles: step one or acclimatization (10 hour of aeration, one hour and 30 minutes of sedimentation and 30 minutes for exchanging the effluent); step 2 (6 hours of aeration or aerobic phase, 4 hours and 45 minutes of stirring or anoxic phase and 1 hour and 15 minutes for sedimentation and exchange effluent); step 3 (2 hours and 30 minutes of aeration, 8 hours and 15 minutes of stirring and 1 hour and 15 minutes for sedimentation and exchange) and step 4 (2 hours of aeration, 8 hours and 45 minutes of stirring and 1 hour and 15 minutes for sedimentation and exchange)... (Complete abstract click electronic access below)
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Among the flow, the flows have the highest destructive potential, may cause disasters with a very high number of victims, as recorded in the events Caraguatatuba (SP) and the Serra das Araras (RJ) in 1967; Valeu do Rio Figueira, in Timbé do Sul (SC) between 1995 and 1996; Vale do Itajaí in Santa Catarina, in 2008, Teresópolis, Petrópolis and Nova Friburgo (RJ), in December 2010 and January 2011. This project aimed to prioritize the main determinants of inducing processes of debris flows by applying the method of decision making AHP (Analytical Hierarch Process). Therefore, the following stages of work were defined: research of the major factors of debris flows, questionnaire design method for application of AHP expert on the subject, analysis of the results obtained from calculating the ratio of consistency and preparation of proposal for hierarchical of conditions for debris flows. From the surveys it was possible to establish a relationship of conditions according to the scale of work, defining three levels: regional (1:250,000 to 1:100,000), Semi-Detail (1:50,000 to 1:25,000) and Detail (1: 10,000 or higher). The factors found were: concentration time, the flood wave, rain, landslide susceptibility (slope), drainage and development in the deposition. The project analyzed the results obtained from the questionnaires, which allowed the ranking of the constraints, contributing to weight constraints in studies of multicriteria mapping of susceptibility to the occurrence of debris flows. The study showed that the most of the analyzed datas were inconsistent because of the different opinion of the judges