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Análise em instalação piloto da dispersão de microrganismos, compostos orgânicos voláteis e aspectos toxicológicos no tratamento de lixiviados de aterros sanitários
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Resumo(s)
The leachate is the result of the percolation of water rain and water that is released
during decomposition of waste. The leachate is a effluent with a low degradability,
composed by high organic matter concentrations, inorganic, recalcitrant substances, toxic
metals and other products with high potential harmful.
One of the emerging techniques of treatment is evaporation, which is the
transformation of the leachate liquid fraction in gas and solid, whose operation is based,
fundamentally, in the use of three climate parameters (wind, relative humidity and
temperature).
A pilot-field was build, composed by a number of tanks, sprinklers and a high
evaporative specific area panel, where the leachate was sprayed.
Have been identified possible emissions of volatile organic compounds from the
leachate evaporation, and the microorganisms dispersal around the pilot. For the leachate
treatment, the evaporator efficiency was evaluated in physical, chemical and biological
terms.
The probability of finding volatile organcic compound was higher in pilot field against
the samples collected at 15 metres from the pilot. However, microorganisms dispersion
around the pilot, occurs in a maximum of 7 to 8 meters. The evaporation phenomenon
allowed an improvement in leachate quality in terms of toxicity, and other parameters
Descrição
Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
Palavras-chave
pilot field evaporation leachate instalação piloto lixiviado evaporação