ESTUDO DE TÉCNICAS PARA O TRATAMENTO ALTERNATIVO DE EFLUENTES OLEOSOS ORIUNDOS DA INDUSTRIALIZAÇÃO DA CASTANHA DE CAJU

• Autor(a) principal: Jeronimo, Carlos Enrique
• Data de Publicação: 2012
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Eletrônica em Gestão Educação e Tecnologia Ambiental (REGET)
• Texto Completo: https://periodicos.ufsm.br/reget/article/view/4990
• topic: Efluentes Oleosos; Processos Oxidativos Avançados; Fotoquímica; Cinética e Reatores.

http://dx.doi.org/10.5902/223611704990An evaluation project was conducted on the technique of treatment for effluentoil which is the deriving process to improve cashews. During the evaluation the followingtechniques were developed: advanced processes of humid oxidation, oxidative processes,processes of biological treatment and processes of adsorption. The assays had been carriedthrough in kinetic models, with an evaluation of the quality of the process by means ofdetermining the chemical demand of oxygen (defined as a technique of control by means ofcomparative study between the available techniques). The results demonstrated that thenatural biodegradation of the effluent ones is limited, as result using the present natural florain the effluent one revealed impracticable for an application in the industrial systems,independent of the evaluation environment (with or without the oxygen presence). The job ofspecific microorganisms for the oily composite degradation developed the viability techniqueof this route, the acceptable levels of inclusion in effluent system of treatment of theimprovement of the cashew being highly good with reasonable levels of removal of CDO.However, the use combined with other techniques of daily pay-treatment for these effluentones revealed to still be more efficient for the context of the treatment of effluent anddiscarding in receiving bodies in acceptable standards for resolution CONAMA 357/2005.While the significant generation of solid residues the process of adsorption with agroindustrialresidues (in special the chitosan) is a technical viable alternative, however, whenapplied only for the treatment of the effluent ones for discarding in bodies of water, theeconomic viability is harmed and minimized ambient profits. Though, it was proven that ifused for ends of I reuse, the viability is equalized and justifies the investments. There was astudy of the photochemistry process which have are applicable to the treatment of the effluentones, having resulted more satisfactory than those gotten for the UV-Peroxide techniques.There was different result on the one waited for the use of catalyses used in the process ofPhoto. The catalyses contained the mixing oxide base of Cerium and Manganese;incorporated of Potassium promoters this had presented the best results in the decompositionof the involved pollutants. Having itself an agreed form the gotten photochemistry daily paytreatmentresulted, then after disinfection with chlorine the characteristics next the portabilityto the water were guarantee. The job of the humid oxidation presented significant results inthe removal of pollutants; however, its high cost alone is made possible for job in projects ofreuses, areas of low scarcity and of raised costs with the capitation/acquisition of the water, inspecial, for use for industrial and potable use. The route with better economic conditions andtechniques for the job in the treatment of the effluent ones of the improvement of the cashewpossesses the sequence to follow: conventional process of separation water-oil,photochemistry process and finally, the complementary biological treatment.