Aplicação de eletrocoagulação-ozonização por corrente direta pulsada e inversão de polaridade para tratamento de efluente de uma lavanderia industrial

• Ano de defesa: 2018
• Autor(a) principal: Rocha, Antônio Herbert Quintino
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Saneamento; Ozonização; Corrente direta; Indústria têxtil; Flotação; Electrocoagulation; Polarity inverter; Textile industry; Flotation
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/37741

The textile industry represents an important pole of production and contaminants that raise concern with the aqueous matrix. Before this In this context, the present study evaluated the use of electrocoagulation / flotation technology and electrocoagulation / flotation / ozonization in order to treat the effluent from an industrial laundry. The trials were carried out in 3 steps. In the 1st stage experiments were performed with the electrocoagulation / flotation process, In the second stage tests were carried out using a polarity inverter and the The last step contemplated the hybrid tests using the electrocoagulation / flotation combined with ozonation. In this study were characterized the electrodes used in the electrolytic process. The experiments were developed in an electrocoagulation-flotation reactor (ECF) constructed in acrylic, operating in batch, with dimensions of 60.0 cm in height and 10.0 cm in diameter, resulting in a total useful volume of 4.710 cm 3. In the process some factors that affect the degradation process of textile effluent, such as: the influence of the electrode material, agitation speed, frequency, polarity inversion and electric current. The percentages of removal of COD and turbidity varied between 30 - 80%, with emphasis on the experiments (electrocoagulation / flotation / ozonization) that presented the highest percentages of removal. When comparing process costs conventional with the costs of the electrocoagulation / flotation / ozonization system, we realize that the first process is still more favorable