Tratamento de lixiviado de aterro sanitário através do processo de flocodecantação seguido de separação por membrana

Abstract

The disposal in sanitary landfills is increasingly used as a final destination for urban solid waste. A product that results from this disposal is the sludge, characterized as a high potential for production and degradation to the environment, at the same time that it has difficulty. Traditional methods, in many cases, no longer meet the minimum parameters required by legislation, as well as techniques such as the recirculation of the leachate in the cell itself are no longer accepted, requiring adequate treatment for a subsequent destination accepted by current legislation. In this sense, the present work seeks to present a study of technologies that can be applied in a complementary way to the basic biological treatment existing in sanitary landfills. The condition of the effluent after biological treatment already existing in the specific landfill that is the object of study will be analyzed, the flococantation method through different combinations and concentrations of coagulant and flocculant and finally the filtration through membranes by the nanofiltration method (spiral). After each test, laboratory analyzes will be performed. If necessary, an auxiliary treatment through reverse osmosis will still be considered.