Monitoramento geofísico no aterro controlado do município de Cordeirópolis (SP)

The geophysical methods are widely applied in environmental characterization and monitoring studies. The resistivity method, in particular, has a wide area of applications, being effective in studies of solid waste landfills. The present work propose a geophysical monitoring in the Cordeirópolis city controlled landfill and analyze relationships between variation of electrical resistivity parameter, the residence time of the solid waste in landfill, the rainfall in the region and the organic matter biodegradation processes. The study has no monitoring system to control the products generated in the organic matter decomposition found in waste such as sealing blanket or leachate or gas drains. The results shows that the electrical resistivity parameter was effective in monitoring the landfill contamination plume

Análise comparativa entre a produção de biogás em aterro controlado e variações no potencial elétrico natural por meio de perfilagem geofísica

This work aims to analyze data from a Natural Electric Potential landfill type ditch located in Cordeirópolis (SP). The procedure measures initially involved the assembly and installation of an apparatus cables, sensors and drain geophysical measurements and flow rate of biogas in a ditch later filled by solid waste. Biogas is a product of degradation of organic matter in waste by the action of microorganisms in an anaerobic environment. Its features high methane content in the gas potentially usable as fuel in energy generation systems or steam. The study area is characterized by clayey soil composition change from the diabase sill correlated to the event Serra Geral Formation siltstones overlapping Tatuí with groundwater level site around 50m. The cables were installed vertically in parallel with drain gas manifold, which allowed the collection of data by the technique geophysical logging every 15 days over a period of eight months. For data analysis we used four parameters in the study, the closing time of the ditch, natural electric potential, the flow velocity of biogas and rain. With the tabulated data plots were constructed for each collection day showing values in the range of the cable is in contact with waste (200 cm - 400 cm) and range of the cable in contact with the soil (600 cm - 800 cm). Subsequently graphs were generated with the period of eight months to analyze the data tabulated. A statistical correlation data, which show the influence of rainfall on the production of biogas. The results were satisfactory and demonstrated the feasibility of the research method in studies for the feasibility analysis for the capture of biogas energy

Proposta para indicação de áreas para a implantação de aterro sanitário no município de Bauru-SP, utilizando análise multi critério de decisão e técnicas de geoprocessamento

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uma contribuição metodológica ao estudo da dinâmica da paisagem aplicada a escolha de áreas para a construção de aterro sanitário em Presidente Prudente-SP

Pós-graduação em Geografia - FCT

Análise da variação da vazão e da concentração do metano presentes nos gases gerados no aterro sanitário de Rio Claro - SP

The study of the generation of landfill gas contributes to the understanding of the relationship between gas production and other parameters, such as time of disposal of waste and moisture (rainfall) and, thus, can subsidize the viability study for energy. This study aims to evaluate the interference of the time of disposal of waste and moisture (rainfall) in the production and composition of biogas generated at the landfill in Rio Claro - SP. As a result it was observed that for the landfill studied, the average percentage of methane in biogas ranged from 49.9% to 54.7%. It was found that moisture (rainfall) and the time of waste disposal are parameters which do not cause significant changes in methane concentration in biogas. However, when analyzed the flow of biogas, which had the maximum average value of 152.86m3/h and minimum average value of 15.47m3/h was observed great interference of moisture (rainfall) and the time of disposal of waste, because well of gas located in newer areas of the landfill showed higher values of flow rate than the areas where the landfill was the beginning of the arrangement. The same way, it was observed that in the dry season flow of biogas decreased in all drains gas analyzed

Estudo da variação da porcentagem e da estimativa de geração de gás metano para o aterro sanitário do município de Rio Claro - SP

Increased demand for energy and the search for alternative energy sources are remarkable and current facts. The management of domestic solid waste is also part of the issue in view of the possibility of power generation in existing landfills, which could provide financial autonomy to the system of waste management and improve the environmental balance of landfills in Brazil, currently only used for final solids disposal. Landfill gas is a viable alternative energy source has been tested in landfills in the World and in Brazil. Thus, the research aimed to evaluate the percentage of methane (CH4) present in three sinks of gases from a landfill in the municipality of Rio Claro – SP (Brazil), and to estimate the potential methane generation over its life through the application of a mathematical model. As a result it was found that in general the percentage of methane present in the gases is significant, between 50 and 62%. It was also noted that waste with disposal time between 8 and 12 months already are in the methanogenic stage. Finally, there was a tendency to increase the generation of methane in the transition periods of rain and drought

Avaliação do comportamento da temperatura na massa deresíduos com diferentes tempos de disposição no aterro sanitário de Rio Claro - SP

The present work investigates solid waste temperature behavior in different depths in two cells in the Rio Claro-SP city’s sanitary landfill. One of the cells is in operation with waste disposal beginning about one year ago. The other one is located in an closed area and contain waste disposed from five to seven years before. Measures were also made in an area that have no disposed waste in order to collect reference values. The data were obtained every fifteen days. The temperature results shows higher values in the operating cell, with maximum 38,1 °C in a depth of 4,0 m. In the closed cell the highest values were 36,3 °C in a depth of 8,5 m. The highest temperature values were obtained in the operating cell due to wider substract availability that indicates a more intense biological degradation activity. With three meters depth, the temperature results were 36,6 °C in the operating cell, 33,8 °C in the closed cell and 24,5 °C in the reference area. Therefore the temperature can be used as a biological activity indicator in sanitary landfills, supporting biogas studies

Identificação de áreas potenciais para implantação de aterro sanitário no distrito de floresta do sul em Presidente Prudente/SP

O crescimento das sociedades urbanas tem gerado um aumento significativo na produção dos resíduos sólidos urbanos, tornando o tema de disposição final amplamente discutido nas gestões públicas. Recentemente, a partir da criação da Lei Federal nº 12.305/2010, que institui a Política Nacional dos Resíduos Sólidos, foi estabelecido que a disposição final ambientalmente adequada dos rejeitos deve ser feita exclusivamente em aterros. O presente trabalho teve então como objetivo a avaliação de áreas potenciais para instalação de aterro sanitário no Distrito de Floresta do Sul no município de Presidente Prudente/SP. Para tanto, utilizou-se o SIG, como ferramenta do geoprocessamento, para análise espacial. Inicialmente, construiu-se um banco de dados geográficos da região de estudo com os dados de geomorfologia, hidrologia, declividade, malha urbana e rede viária. Em seguida, foram geradas representações na categoria MNT, onde os valores foram normalizados em intervalos [0,1] através da lógica booleana e fuzzy... (Resumo completo, clicar acesso eletrônico abaixo)

Mapeamento de áreas susceptíveis para implantação de aterro sanitário no município de Rio Claro, SP

The inadequate disposal of municipal waste is one of the biggest environmental problems. The lack of long public politics makes this problem a challenge to their administrators. Finding a place for the disposal of waste is an easy task and the present work looks forward to a better understanding about the concepts involved in order to choose favorable areas for the development of sanitary landfills, minimizing environmental impacts. In this line of thought several areas in Rio Claro`s region were evaluated according to the environmental terms. The areas which were classified as good or almost good will have a more elaborated study such as field works, evaluation and understanding of the concepts analyzed so that there aren’t any waste of money, work, social and environmental waste in the area. These areas were analyzed according to secondary data such as geological and pedological formation and primary studies such as the assumption of the reality as showed in the map will be made in order to acquire better results.

Estudos das condições da disposição final de resíduos sólidos domiciliares no aterro sanitário de Cachoeira Paulista – SP

In this assignment, will be assessed the conditions of operation for the final disposal of household solid waste landfill in the city of Cachoeira Paulista-SP. The theme chosen for research is of great social importance therefore is directly related to the well-being of the people, sustainable development, environmental protection and public health. Everyone should be aware of the problems related to improper final disposal of solid waste of any kind. The objectives of the study were: analyse the conditions of operation of the landfill; verify the treatment technology of percolating liquids (slurry) generated in the landfill; examine whether the landfill obey the rules; which cities in the region depend on the disposal system, verify that there are flaws in the final destination of solid waste in the municipality and in the cities of the region. The research is primarily a bibliographic review, obtained by querying the database and virtual libraries. Technical visits were also held at the study site, to check spot the methodology employed in the operation of landfill This work concluded that for the period under study, the landfill was as a landfill site, therefore, in accordance with the rules of operation

Integração de critérios técnicos, ambientais e sociais em estudos de alternativas locacionais para implantação de aterro sanitário

A Política Nacional do Meio Ambiente tem como objetivo a conciliação do desenvolvimento econômico e social com a qualidade ambiental, e dispõe de vários instrumentos que procuram contemplara capacidade de suporte do meio. Assim, a discussão sobre a localização das atividades é uma etapa importante para a avaliação da viabilidade ambiental de um determinado empreendimento, notadamente em processos de licenciamento ambiental. O trabalho apresenta uma abordagem metodológica para integração de critérios técnicos, ambientais e sociais em estudos de alternativas de localização de aterros sanitários, com especial atenção à interação entre os aspectos ambientais e os elementos fundamentais de um projeto (a saber, requisitos locacionais e concepção tecnológica), aplicado em um estudo de caso em São Carlos (SP). Como resultados principais, destacam-se o maior foco nos impactos significativos e a possibilidade de envolvimento de segmentos importantes da sociedade previamente à elaboração dos estudos ambientais.

Avaliação de parâmetros indicadores de poluição por efluente líquido de um aterro sanitário

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização e biodegradação de lodo de estações de tratamento de água para descarte em aterro sanitário

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Determinação de alguns parâmetros indicadores de poluição por efluente líquido de um aterro sanitário

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Resistividade elétrica em aterro sanitário e relações com a produção de biogás

The landfill biogas can be an alternative energetic resource as a fuel to electrical energy generators, although, there are not too many techniques to prospect the gas. Usually, landfills receive home waste, which in most are constituted by organic matter whose degradation by anaerobic activity produces the biogas. Geophysics is an important tool in environmental studies and the electrorresistivity, an important method employed in contaminated areas by slurry or necroslurry, including a monitoring for each contaminator flow. The electrorresistivity has not too much application in finding biogas. For this work, two biogas drains in Rio Claro-SP landfill were selected: one whose waste disposition correspond to the initial activities in the landfill and another drain whose disposition started more recently. The result consists in a higher biogas production if compared to the biogas from the older drain. The present paper consists in a monitoring along one year, with dates collection in each fifteen days. These dates were tabled in Excel 2010 program and graphics of resistivity x depth were generated. Hereafter, most variable resistivity values depth were chosen, to further graphics pluviosity x resistivity generation in Grapher 8 program and the biogas output (m³/h) in monitoring period. The use of pluviosity parameter can be justified by its influence above resistivity. The results show that there is a horizon with possibly biogas accumulation. Lastly, the method was effective, although, for any application of geophysical methods, the knowledge about its limitations is necessary; in this case the influence of pluviosity and also that the measurements were made in one single point, it will not show any side variation