Migração de poluentes de lixiviado de locais de disposição final de resíduos sólidos para o solo e para águas subterrâneas no Brasil: análise baseada em trabalhos científicos

• Autor(a) principal: Aquino, Layla Ferraz
• Data de Publicação: 2022
• Outros Autores: [e-mail]
• 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/1/18174
• topic: Environmental engineering; Integrated solid waste management; Landfill - Leaching; Pollution; Engenharia ambiental; Gestão integrada de resíduos sólidos; Aterro sanitário - Lixiviação; Poluição; ENGENHARIAS::ENGENHARIA SANITARIA::SANEAMENTO BASICO::RESIDUOS SOLIDOS, DOMESTICOS E INDUSTRIAIS

Irregularly disposing of solid waste on the ground is a reality in Brazil; according to SNIS data, 54.9% of waste disposal areas in the country are dumps and 21.9% are controlled landfills. Even after the implementation of the PNRS, this type of waste disposal is still the first option for small municipalities. The abandonment of these areas, without adequate remediation after the operation is finished, can generate a problem which directly affects public health. The aim of this work was to evaluate the presence and migration of pollutants from solid waste leachate from sanitary, controlled landfills and dumps in Brazil to soil and groundwater. From Morita et al, 2021, a data complementation was carried out with a search in the Science Direct, SciELO, Brazilian Library of Theses and Dissertations and Google Scholar databases, for the period from January 1, 2020, to January 1, 2022 Of all the analyzed data, 113 works were selected, which generated 352 groups of data referring to surface water, groundwater, leachate and superficial and in-depth soils. Data referring to physical-chemical and metal analyzes were chosen for leachate, groundwater, topsoil and in depth. Many of the analyzed results were above the VRQ required by the Legislation. Metals such as Pb, Cd, Cu, Al, conductivity, Cl, Na, K, COD, BOD and ammoniacal nitrogen appeared in high concentrations above the Quality Reference Values required by the Legislation and indicated a change in groundwater quality. Several parameters of interest for the determination of contamination by MSW leachate such as: conductivity, Na, K and Mg are not included by the standard, which compromise the analysis of the results. The values found in the soil analyzes also showed high concentrations of metals (above the Prevention Value), especially cadmium, chromium, copper and zinc and abundant inorganic ions in the leachate.