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Doctoral Thesis
DOI
https://doi.org/10.11606/T.18.2001.tde-13112015-142101
Document
Author
Full name
Marcus Cesar Avezum Alves de Castro
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2001
Supervisor
Committee
Schalch, Valdir (President)
Branco, Samuel Murgel
Daniel, Luiz Antonio
Fernandes Junior, José Leomar
Leite, Wellington Cyro de Almeida
Title in Portuguese
Avaliação de um sistema australiano de lagoas no tratamento conjunto de esgoto sanitário e líquidos percolados gerados em aterro sanitário
Keywords in Portuguese
Aterros sanitários
Chorume
Resíduos sólidos
Tecnologias de tratamento
Abstract in Portuguese
Um dos desafios na elaboração de projetos de aterros sanitários é o equacionamento do destino/tratamento dos líquidos percolados em função das elevadas concentrações de poluentes, associadas a grandes variações, e seu abrandamento natural ao longo do tempo. Nesse sentido, o trabalho avalia, a partir da montagem de unidade piloto, a viabilidade do lançamento dos líquidos percolados gerados no aterro de sanitário, localizado no município de Piracicaba-SP, na Estação de Tratamento de Esgoto que dispõe de sistema australiano de lagoas. A unidade foi montada na própria estação e operada durante 18 meses, sendo avaliado o comportamento da eficiência para vazões crescentes de líquidos percolados. No trabalho foi investigado também a adequação dos métodos Suíço, Racional e do Balanço Hídrico na previsão da taxa de geração de líquidos percolados, a partir da comparação das estimativas obtidas pela aplicação dos métodos com a observada na prática. De maneira geral, pode-se dizer que é viável o lançamento de chorume em estações de tratamento de esgoto, sem prejuízo na eficiência do sistema. Com relação às estimativas das vazões de chorume pela aplicação dos métodos, os erros variaram desde menos 22% até mais 20% da vazão obtida na prática.
Title in English
Evaluation of a system of stabilization lagoons for the joint treatment of wastewater and leachates
Keywords in English
Leachates
Sanitary landfills
Solid waste
Treatment technologies
Abstract in English
One of the challenges in the project of sanitary landfills is the solution of the destination/treatment of leachates due to the high concentration of pollutants, which is also associated to large variations and a natural reduction with time. This work evaluates, based on a pilot unit, the feasibility of the treatment of leachates, produced in sanitary landfills, in a wastewater treatment plant that uses a system of stabilization lagoons. The pilot unit was mounted in the wastewater treatment site and operated for 18 months, in which the performance was monitored for crescent flowrates of leachates. It was also investigated the prediction of leachate flowrates by different methods (Swiss, Rational and Hydric Balance) based on the comparison of predicted leachate generation rates with observed data. In general, it is possible to perform the treatment of leachates in wastewater treatment plants because there was no reduction of efficiency. Related to the prediction of leachate volumes, the errors of the tested methods range from -22% to + 20% of the observed flowrates.
 
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Publishing Date
2015-11-13
 
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