Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/3552
Tipo: Dissertação
Título: Adaptação de equipamento de geração de gases oxidantes para aplicação na desinfecção de água
Título(s) alternativo(s): Adaptation of generator oxidant gases equipament to aplication in water disinfection
Autor(es): Oliveira, Silvestre Zechinelli de
Primeiro Orientador: Souza, Cecília de Fátima
Primeiro coorientador: Tinôco, Adelson Luiz Araújo
Segundo coorientador: Borges, Alisson Carraro
Primeiro avaliador: Tinôco, Ilda de Fátima Ferreira
Segundo avaliador: Nascimento, José Wallace Barbosa do
Terceiro avaliador: Rezende, Ana Augusta Passos
Abstract: Human consumption of water outside of the microbiological standards for drinking constitutes a health and disease risk factor. Through the process of infiltration in the soil, groundwater may be contaminated by the waste generated by human activity and deposited in the soil, waterways or air. The consumption of water in natura, captured in a spring, may lead to the risk of disease. One of the alternative technologies for disinfecting water that has shown promise is the generation of an oxidant solution in loco. The electrochemical reaction of sodium chloride produces oxidizing gases, which reacts with the water to produce the hypochlorite ion in balance with hypochlorous acid, along with traces of other oxidants. In the present study the development of a device based on an imported model that uses this type of technology wassought in order to reduce the cost of acquisition and makeit more available to disadvantaged communities with water quality issues. The evaluation of the efficiency of this technology in disinfecting water with different qualities (color and turbidity) was also sought, using total coliforms and Escherichia coli as indicator organisms of contamination. In each experimentthe quality of untreated water, and water after adding the oxidant was examined on turbidity, true color, residual chlorine, pH, temperature, and quantification of microorganism indicators. In the experiments performed we found that the adapted equipment showed to be as efficient in the production of disinfectant agents as the original equipment. In the microbiological assays performed on water contaminated with E. coli (synthesized water in a laboratory and natural) and total coliforms (natural water), the inactivation of these organisms was observed to be effective with the use of gases that came from the adapted equipment, taking into account the content of chlorine in water treated with the equipment.
Human consumption of water outside of the microbiological standards for drinking constitutes a health and disease risk factor. Through the process of infiltration in the soil, groundwater may be contaminated by the waste generated by human activity and deposited in the soil, waterways or air. The consumption of water in natura, captured in a spring, may lead to the risk of disease. One of the alternative technologies for disinfecting water that has shown promise is the generation of an oxidant solution in loco. The electrochemical reaction of sodium chloride produces oxidizing gases, which reacts with the water to produce the hypochlorite ion in balance with hypochlorous acid, along with traces of other oxidants. In the present study the development of a device based on an imported model that uses this type of technology wassought in order to reduce the cost of acquisition and makeit more available to disadvantaged communities with water quality issues. The evaluation of the efficiency of this technology in disinfecting water with different qualities (color and turbidity) was also sought, using total coliforms and Escherichia coli as indicator organisms of contamination. In each experimentthe quality of untreated water, and water after adding the oxidant was examined on turbidity, true color, residual chlorine, pH, temperature, and quantification of microorganism indicators. In the experiments performed we found that the adapted equipment showed to be as efficient in the production of disinfectant agents as the original equipment. In the microbiological assays performed on water contaminated with E. coli (synthesized water in a laboratory and natural) and total coliforms (natural water), the inactivation of these organisms was observed to be effective with the use of gases that came from the adapted equipment, taking into account the content of chlorine in water treated with the equipment.
Palavras-chave: Eletrólise
Desinfecção
Tratamento de água
Electrolysis
Disinfection
Water treatment
CNPq: CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA::CONSTRUCOES RURAIS E AMBIENCIA
Idioma: por
País: BR
Editor: Universidade Federal de Viçosa
Sigla da Instituição: UFV
Departamento: Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ
Programa: Mestrado em Engenharia Agrícola
Citação: OLIVEIRA, Silvestre Zechinelli de. Adaptation of generator oxidant gases equipament to aplication in water disinfection. 2009. 78 f. Dissertação (Mestrado em Construções rurais e ambiência; Energia na agricultura; Mecanização agrícola; Processamento de produ) - Universidade Federal de Viçosa, Viçosa, 2009.
Tipo de Acesso: Acesso Aberto
URI: http://locus.ufv.br/handle/123456789/3552
Data do documento: 6-Ago-2009
Aparece nas coleções:Engenharia Agrícola

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