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Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.5/3347

Title: Tratamento de águas residuais de uma indústria de biodiesel. Método combinado de coagulação, floculação e flotação por ar dissolvido
Authors: Gabriel, Catarina Assunção
Advisor: Cordovil, Cláudia Saramago de Carvalho Marques dos Santos
Keywords: biodiesel
coagulation
effluents
flocculation
flotation
coagulação
efluentes
floculação
flotação
Issue Date: 2010
Publisher: ISA
Abstract: The aim of this research was to evaluate the efficiency of the treatment of waste water from purification of biodiesel following a combined method of coagulation, flocculation and air flotation. The effect was evaluated through the analysis of the following parameters: dose of coagulant, pH, dose and type of polymer and saturated water used. This experiment had three phases, the first consisted of the assessment of the quality of wastewater from a biodiesel plant, the second was the choice of a more efficient polymer for the removal of turbidity, and the third a verification of the efficiency of the treatment through the analysis of color removal. In the first model all the factors influenced the effectiveness of the treatment and it was observed that by fixing two factors, pH and saturated water, and varying the dose of coagulant and polymer, we would get a more efficient treatment. The removal of the turbidity reached 99.99%, the values of 21NTU, and in the color an average removal of 99,9% up to 141 NC. Thus, this treatment could be used for clarification of waste water, when followed by another treatment in order to allow further use, or discharge in natural streams.
Description: Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/3347
Appears in Collections:BISA - Dissertações de Mestrado / Master Thesis

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