Remoção de carga orgânica recalcitrante de lixiviado de resíduos sólidos urbanos pré-tratado biologicamente por coagulação química-foculação-sedimentação
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Felici, Elson Mendonça [UNESP]
Kuroda, Emilia Kiyomi
da Silva, Sandra Márcia Cesário Pereira
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The utilization of physical-chemical post treatment on landfill leachate has been an option employed to remove organic compounds from this effluent. In this way, this article aimed to evaluate the physical-chemical treatment by coagulation-flocculation-sedimentation as an alternative in the post-treatment of landfill leachate submitted to biological treatment. Consequently, it was used a Jar-test to monitor true color and chemical oxygen demand (COD) in order to evaluate the efficiency of the physical-chemical treatment. By means of factorial design and analyzing the results, it was found that the best removals of color and COD were attained by combining a dosage of 400 mg Fe+3/L with pH 3.0, achieving 98 and 81% of color removal and COD, respectively.
Coagulation-flocculation, Ferric chloride, Landfill leachate, Post treatment
Engenharia Sanitaria e Ambiental, v. 18, n. 2, p. 177-184, 2013.