Aplicação de processos físico-químicos como alternativa de pré e pós-tratamento de lixiviados de aterros sanitários

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Abstract

The aim of this article was evaluate the implementation of the ammonia stripping as a pretreatment for landfill leachate and the use of the coagulationflocculation-sedimentation process for the removal of refractory organic compounds present in a landfill leachate pretreated in an activated sludge system. The rates of ammonia nitrogen removal ranged between 3.5 and 3.6 mg NH 3-N.L -1.h -1in a lab scale reactor (working volume of 20 L) equipped with a mechanical stirrer and 3.2 and 3.3 mg NH 3-N.L -1.h -1in a lab scale aerated column (working volume of 10 L). It was possible to achieve removals above 90% of refractory organic compounds (measured as apparent color) applied coagulant dosage about 400 mg Fe +3.L -1 and 400 mg Al +3.L -1.

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Queiroz, L. M., Amaral, M. S., Morita, D. M., Yabroudi, S. C., & Sobrinho, P. A. (2011). Aplicação de processos físico-químicos como alternativa de pré e pós-tratamento de lixiviados de aterros sanitários. Engenharia Sanitaria e Ambiental, 16(4), 403–410. https://doi.org/10.1590/S1413-41522011000400012

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