Conservação de Água, Tratamento, reuso e Reciclo de efluentes em Refinaria de Petróleo

• Autor(a) principal: Carvalho, José Henrique da Silva
• Data de Publicação: 2006
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/15813
• topic: Wastewater; Petroleum; Water reuse; Efluente; Petróleo; Reuso de água; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA::INSTRUMENTACAO ANALITICA

In this study the main results of water conservation and effluent reusing and recycling programs at petroleum refinery was analyzed. The main actions used to look for water conservation (reduction) were: implanting of personnel training program; plant design changes and process optimization. At reuse step the objective was to evaluate the compatibility of aqueous effluents in order to reuse it as make-up water at other industrial processes. At recycle step, the purpose was to improve the refinery effluent quality by effluent treatment station optimization in order to recycle it at cooling system, the higher water consumer at a refinery. The results of conservation, reuse and recycle actions provide the reduction of water consumption of, respectively, 108,000, 6,100 and 130,000 m3/year. Another important result was an environmental improvement by a reduction of final effluent flow rate, besides the reduction of the concentration of mainly contaminants (COD, BOD, sulphide, oils and greases, suspended solids, phenol and ammoniac nitrogen. The total reduction of effluent flow rate was 80% relative to initial status. Finally, a technical economical analysis of global program was made and showed nine months as returning rate of investment, confirming that was an extremely attractive design, proving that it s possible to rationalize natural resources, improve environmental quality and gain good economic results simultaneously.